Waukegan, Illinois Weather Conditions

Severe Weather Alerts

Your Weather

To update your location please enter your ZIP code, city, state, airport code or country in the field below. Weather by E-mail: Forecast storm alerts. Weather E-Mail Alert Sign Up »

Current Conditions

  • 27°
  • Snow
  • Wind: NE 20 mph
  • Humidity: 96%
  • Visibility: 0.5 miles
  • Dew Point: 26°
  • Pressure: 30.05 in. -
  • Heat Index: 14

Select a Section

Click a section below for more information.

Next 12 Hours

6  am
9  am
12  pm
3  pm
6  pm
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
25°
27°
25°
21°
19°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Sunday
  • Snow
  • High: 27 °
  • Low: 12 °
  • Snow
  • Monday
  • Partly Cloudy
  • High: 19 °
  • Low: 9 °
  • Partly Cloudy
  • Tuesday
  • Chance of Snow
  • High: 25 °
  • Low: 9 °
  • Chance of Snow
  • Wednesday
  • Partly Cloudy
  • High: 19 °
  • Low: -2 °
  • Partly Cloudy
  • Thursday
  • Partly Cloudy
  • High: 19 °
  • Low: 7 °
  • Partly Cloudy

Forecast for Waukegan, Illinois

Updated: 3:00 AM CST on February 01, 2015

Winter Storm Warning in effect until 2 PM CST this afternoon...
  • Sunday

    Overcast with snow. High of 27F with a windchill as low as 5F. Windy. Winds from the NE at 20 to 30 mph with gusts to 35 mph. Chance of snow 100% with accumulations up to 3 in. possible.

  • Sunday Night

    Overcast with snow, then snow showers after midnight. Low of 12F with a windchill as low as -4F. Windy. Winds from the NNE at 25 to 30 mph with gusts to 35 mph. Chance of snow 100% with accumulations up to 4 in. possible.

  • Monday

    Partly cloudy. High of 19F with a windchill as low as 0F. Winds from the NW at 5 to 20 mph.

  • Monday Night

    Mostly cloudy with a chance of snow after midnight. Low of 9F with a windchill as low as -4F. Winds from the SW at 5 to 10 mph. Chance of snow 30%.

  • Tuesday

    Mostly cloudy with a chance of snow. High of 25F with a windchill as low as 1F. Winds from the SW at 10 to 15 mph. Chance of snow 40%.

  • Tuesday Night

    Overcast with a chance of snow in the evening, then mostly cloudy. Low of 9F with a windchill as low as -6F. Winds from the WNW at 5 to 15 mph. Chance of snow 20%.

  • Wednesday

    Partly cloudy in the morning, then clear. High of 19F with a windchill as low as 5F. Winds from the NW at 10 to 15 mph.

  • Wednesday Night

    Clear in the evening, then partly cloudy. Low of -2F with a windchill as low as -13F. Winds from the NW at 10 to 15 mph.

  • Thursday

    Partly cloudy in the morning, then overcast. High of 19F with a windchill as low as -9F. Winds from the NNW at 5 to 15 mph.

  • Thursday Night

    Partly cloudy. Low of 7F. Winds from the NW at 5 to 10 mph shifting to the WSW after midnight.

  • Friday

    Clear. High of 27F with a windchill as low as -2F. Breezy. Winds from the SSW at 10 to 20 mph.

  • Friday Night

    Clear. Fog overnight. Low of 18F with a windchill as low as 0F. Breezy. Winds from the SSW at 15 to 25 mph.

  • Saturday

    Clear. Fog early. High of 30F. Winds from the WNW at 5 to 10 mph shifting to the NE in the afternoon.

  • Saturday Night

    Mostly cloudy with a chance of snow. Fog overnight. Low of 23F. Winds from the ESE at 10 to 15 mph. Chance of snow 50% with accumulations up to 1 in. possible.

  • Sunday

    Clear. Fog early. High of 37F. Winds from the East at 5 to 15 mph.

  • Sunday Night

    Clear. Low of 23F. Winds less than 5 mph.

  • Monday

    Clear. High of 27F. Winds less than 5 mph.

  • Monday Night

    Clear. Low of 27F. Winds less than 5 mph.

  • Tuesday

    Clear. High of 28F. Winds less than 5 mph.

  • Tuesday Night

    Clear. Fog overnight. Low of 23F. Winds from the NNE at 5 to 10 mph.

  • Wednesday

    Clear. Fog early. High of 27F with a windchill as low as 16F. Winds from the North at 5 to 10 mph.

  • Wednesday Night

    Clear. Fog overnight. Low of 23F with a windchill as low as 12F. Winds from the North at 5 to 10 mph.

Severe Weather Alert Descriptions

 Blizzard Warning, Winter Storm Warning  Statement as of 4:08 am CST on February 1, 2015


... Winter Storm Warning now in effect until 2 PM CST this
afternoon...
... Blizzard Warning in effect from 2 PM this afternoon to
midnight CST tonight...

The National Weather Service in Chicago has issued a Blizzard
Warning... which is in effect from 2 PM this afternoon to midnight
CST tonight. A Winter Storm Warning remains in effect until 2 PM
CST.

* Timing... snow... heavy at times... will continue until early
evening. Blizzard conditions will develop late this afternoon
and continue this evening... especially near the lake and in
more open areas.

* Winds/visibility... northeast winds will increase to 20 to 30 mph
with gusts to 40 mph this afternoon... with even stronger winds
near the lake. The combination of falling and blowing snow will
frequently reduce visibilities to near zero in white out
conditions late this afternoon and evening.

* Snow accumulations... 10 to 15 inches... with isolated totals up
to 18 inches possible.

* Main impact... snow covered roads will make travel difficult. By
afternoon... the combination of the snow and very strong winds
will make travel extraordinarily dangerous.

Precautionary/preparedness actions...

A Winter Storm Warning for heavy snow means severe winter weather
conditions are expected or occurring. Significant amounts of
snow are forecast that will make travel dangerous. Only travel in
an emergency. If you must travel... keep an extra flashlight...
food... and water in your vehicle in case of an emergency.

A Blizzard Warning means severe winter weather conditions are
expected or occurring. Falling and blowing snow with strong winds
and poor visibilities are likely. This will lead to whiteout
conditions... making travel extremely dangerous. Do not travel. If
you must travel... have a winter survival kit with you. If you get
stranded... stay with your vehicle.







 Lakeshore Flood Advisory  Statement as of 4:11 am CST on February 1, 2015


... Lakeshore Flood Advisory in effect from 2 PM this afternoon to
10 am CST Monday...

The National Weather Service in Chicago has issued a Lakeshore
Flood Advisory... which is in effect from 2 PM this afternoon to
10 am CST Monday.

* Lake Shore flooding... large and battering waves of 12 to 16 feet
will result in Lakeshore minor flooding.

Precautionary/preparedness actions...

A Lakeshore Flood Advisory indicates that onshore winds will
generate flooding of low areas along the Lakeshore.

For information on swim advisories or bans at Chicago beaches
visit... www.Cpdbeaches.Com.



Izzi

Please visit the following website to share your thoughts on the
new beach hazards statement...

Http://www.Weather.Gov/survey/NWS-survey.Php?Code=chmbhs

Then after doing the survey visit US at http://weather.Gov/Chicago

Follow US on facebook... twitter... and youtube at:
www.Facebook.Com/nwschicago



 Local Storm Report 



02/01/2015 0600 am

3 miles NE of Gurnee, Lake County.

Snow m5.0 inch, reported by cocorahs.


            Storm total so far. 1 inches in the past 2 hours up to
            report time.




02/01/2015 0430 am

2 miles NE of Gurnee, Lake County.

Snow m3.0 inch, reported by cocorahs.


            Storm total so far.





02/01/2015 0124 am

Zion, Lake County.

Snow m2.4 inch, reported by trained spotter.





02/01/2015 0144 am

Highwood, Lake County.

Snow m2.0 inch, reported by trained spotter.




Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: North Side, Waukegan, Waukegan, IL

Updated: 7:09 AM CST

Temperature: 29.1 °F Dew Point: 27 °F Humidity: 90% Wind: NE at 7.6 mph Pressure: 29.85 in Hourly Precipitation: 0.00 in Windchill: 22 °F Graphs

Location: NE North Chicago, North Chicago, IL

Updated: 6:59 AM CST

Temperature: 28.8 °F Dew Point: 29 °F Humidity: 99% Wind: ENE at 5.3 mph Pressure: 29.92 in Hourly Precipitation: - Windchill: 23 °F Graphs

Location: HADS WAUKEGAN HARBOR NWS-GLOS, Waukegan, IL

Updated: 6:30 AM CST

Temperature: 29 °F Dew Point: - Humidity: - Wind: ENE at 28 mph Pressure: 30.05 in Hourly Precipitation: 0.00 in Windchill: 14 °F Graphs

Location: The Pines, Gurnee, IL

Updated: 7:00 AM CST

Temperature: 27.3 °F Dew Point: 27 °F Humidity: 99% Wind: ESE at 4.3 mph Pressure: 29.91 in Hourly Precipitation: - Windchill: 22 °F Graphs

Location: Westgate, Gurnee, IL

Updated: 7:09 AM CST

Temperature: 27.0 °F Dew Point: 27 °F Humidity: 100% Wind: SSE at 1.9 mph Pressure: 29.29 in Hourly Precipitation: 0.00 in Windchill: 27 °F Graphs

Location: Prairie Ridge Farm, Green Oaks, IL

Updated: 7:09 AM CST

Temperature: 28.6 °F Dew Point: 28 °F Humidity: 97% Wind: ENE at 6.9 mph Pressure: 30.05 in Hourly Precipitation: 0.00 in Windchill: 21 °F Graphs

Location: APRSWXNET Green Oaks IL US, Libertyville, IL

Updated: 6:32 AM CST

Temperature: 29 °F Dew Point: 28 °F Humidity: 97% Wind: ENE at 7 mph Pressure: 30.01 in Hourly Precipitation: 0.00 in Windchill: 22 °F Graphs

Location: Jerry's South Central Zion 2, Zion, IL

Updated: 7:09 AM CST

Temperature: 28.0 °F Dew Point: 28 °F Humidity: 99% Wind: North at 20.9 mph Pressure: 29.94 in Hourly Precipitation: 0.00 in Windchill: 14 °F Graphs

Location: Jerry's South Central Zion 1, Zion, IL

Updated: 7:09 AM CST

Temperature: 27.9 °F Dew Point: 26 °F Humidity: 94% Wind: NE at 10.9 mph Pressure: 29.90 in Hourly Precipitation: 0.00 in Windchill: 18 °F Graphs

Location: Reserve at the Merit Club, Libertyville, IL

Updated: 7:09 AM CST

Temperature: 29.9 °F Dew Point: 28 °F Humidity: 91% Wind: Calm Pressure: 30.03 in Hourly Precipitation: 0.00 in Windchill: 30 °F Graphs

Location: Zion E.S.D.A., Zion, IL

Updated: 7:09 AM CST

Temperature: 27.0 °F Dew Point: 26 °F Humidity: 96% Wind: ENE at 9.0 mph Pressure: 29.97 in Hourly Precipitation: 0.00 in Windchill: 18 °F Graphs

Location: Tom's Central Zion, Zion, IL

Updated: 7:09 AM CST

Temperature: 27.3 °F Dew Point: 27 °F Humidity: 99% Wind: NE at 5.8 mph Pressure: 29.95 in Hourly Precipitation: 0.00 in Windchill: 21 °F Graphs

Location: Kohl Avenue, North Chicago, IL

Updated: 7:06 AM CST

Temperature: 32.4 °F Dew Point: 31 °F Humidity: 96% Wind: North at - Pressure: 30.12 in Hourly Precipitation: - Windchill: 32 °F Graphs

Location: Grafton Court, Lake Bluff, IL

Updated: 7:06 AM CST

Temperature: 31.3 °F Dew Point: 27 °F Humidity: 84% Wind: North at - Pressure: 30.18 in Hourly Precipitation: - Windchill: 31 °F Graphs

Location: Concord Oaks East, Gurnee, IL

Updated: 7:09 AM CST

Temperature: 27.3 °F Dew Point: 26 °F Humidity: 96% Wind: NE at 10.1 mph Pressure: 29.92 in Hourly Precipitation: 0.00 in Windchill: 18 °F Graphs

Location: Concord Oaks - West, Gurnee, IL

Updated: 7:06 AM CST

Temperature: 26.7 °F Dew Point: 24 °F Humidity: 89% Wind: East at 14.0 mph Pressure: 29.99 in Hourly Precipitation: 0.00 in Windchill: 15 °F Graphs

Location: Bluff Road, Lake Bluff, IL

Updated: 7:06 AM CST

Temperature: 29.8 °F Dew Point: 30 °F Humidity: 99% Wind: North at - Pressure: 30.09 in Hourly Precipitation: - Windchill: 30 °F Graphs

Location: West Oak Spring Road, Libertyville, IL

Updated: 7:06 AM CST

Temperature: 29.1 °F Dew Point: 28 °F Humidity: 94% Wind: North at - Pressure: 29.85 in Hourly Precipitation: - Windchill: 29 °F Graphs

Location: East Scranton Avenue, Lake Bluff, IL

Updated: 7:07 AM CST

Temperature: 30.2 °F Dew Point: 28 °F Humidity: 91% Wind: North at - Pressure: 30.02 in Hourly Precipitation: - Windchill: 30 °F Graphs

Location: Finstad Drive, Libertyville, IL

Updated: 7:07 AM CST

Temperature: 28.9 °F Dew Point: 28 °F Humidity: 98% Wind: North at - Pressure: 30.06 in Hourly Precipitation: - Windchill: 29 °F Graphs

Location: MesoWest GURNEE IL US UPR, Russell, IL

Updated: 5:15 AM CST

Temperature: 29 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: 29 °F Graphs

Location: School Street, Libertyville, IL

Updated: 7:07 AM CST

Temperature: 29.7 °F Dew Point: 29 °F Humidity: 99% Wind: North at - Pressure: 30.06 in Hourly Precipitation: - Windchill: 30 °F Graphs

Location: Deerpath, Lake Villa, IL

Updated: 7:09 AM CST

Temperature: 26.4 °F Dew Point: 25 °F Humidity: 96% Wind: ENE at 13.0 mph Pressure: 30.03 in Hourly Precipitation: 0.00 in Windchill: 15 °F Graphs

Location: Lorelei Acres, Zion, IL

Updated: 7:09 AM CST

Temperature: 26.2 °F Dew Point: 24 °F Humidity: 91% Wind: NNE at 8.3 mph Pressure: 29.77 in Hourly Precipitation: 0.00 in Windchill: 18 °F Graphs

Location: Bull Creek, Libertyville, IL

Updated: 7:09 AM CST

Temperature: 29.0 °F Dew Point: 28 °F Humidity: 95% Wind: East at 11.0 mph Pressure: 29.97 in Hourly Precipitation: 0.00 in Windchill: 20 °F Graphs

Location: APRSWXNET Lake Forest IL US, Lake Bluff, IL

Updated: 6:21 AM CST

Temperature: 31 °F Dew Point: 30 °F Humidity: 96% Wind: East at 12 mph Pressure: 30.01 in Hourly Precipitation: 0.00 in Windchill: 22 °F Graphs

Location: Country Place, Lindenhurst, IL

Updated: 6:59 AM CST

Temperature: 26.6 °F Dew Point: 26 °F Humidity: 98% Wind: NE at 6.8 mph Pressure: 29.89 in Hourly Precipitation: - Windchill: 19 °F Graphs

Location: Sunshine Subdivision, Third Lake, IL

Updated: 7:09 AM CST

Temperature: 28.2 °F Dew Point: 26 °F Humidity: 90% Wind: North at 6.5 mph Pressure: 29.00 in Hourly Precipitation: 0.00 in Windchill: 21 °F Graphs

Location: Dawes, Libertyville, IL

Updated: 6:56 AM CST

Temperature: 28.8 °F Dew Point: 29 °F Humidity: 99% Wind: WNW at 5.3 mph Pressure: 29.91 in Hourly Precipitation: - Windchill: 23 °F Graphs

Location: The Highlands, Libertyville, IL

Updated: 7:09 AM CST

Temperature: 28.6 °F Dew Point: 27 °F Humidity: 95% Wind: NE at 5.8 mph Pressure: 29.17 in Hourly Precipitation: 0.00 in Windchill: 22 °F Graphs

Location: 7th & Landon (Near Metra), Winthrop Harbor, IL

Updated: 7:05 AM CST

Temperature: 28.0 °F Dew Point: 28 °F Humidity: 99% Wind: NE at 12.0 mph Pressure: 30.02 in Hourly Precipitation: 0.00 in Windchill: 18 °F Graphs

Location: APRSWXNET Lake Forest IL US, Lake Forest, IL

Updated: 6:32 AM CST

Temperature: 29 °F Dew Point: 28 °F Humidity: 96% Wind: ENE at 15 mph Pressure: 29.27 in Hourly Precipitation: 0.00 in Windchill: 18 °F Graphs

Location: Lake Forest, IL

Updated: 7:02 AM CST

Temperature: 28.9 °F Dew Point: 28 °F Humidity: 96% Wind: ENE at 16.0 mph Pressure: 29.25 in Hourly Precipitation: 0.00 in Windchill: 17 °F Graphs

Location: CountryPlaceM, Lindenhurst, IL

Updated: 6:57 AM CST

Temperature: 27.1 °F Dew Point: 27 °F Humidity: 98% Wind: NW at 7.3 mph Pressure: 29.88 in Hourly Precipitation: - Windchill: 19 °F Graphs

Location: APRSWXNET Grayslake IL US, Grayslake, IL

Updated: 6:33 AM CST

Temperature: 29 °F Dew Point: 28 °F Humidity: 95% Wind: NE at 9 mph Pressure: 29.92 in Hourly Precipitation: 0.00 in Windchill: 21 °F Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Area forecast discussion 
National Weather Service Chicago/Romeoville Illinois 
558 am CST sun Feb 1 2015 


Short term... 
347 am CST 


Through Monday... 


Have been swamped this morning and am running behind...so going to 
keep discussion brief this morning and just hit the important 
changes. The biggest changes to going forecast is the upgrade to 
a Blizzard Warning for portions of NE Illinois/Chicago metropolitan and to 
lower snow amounts and add mixed precipitation back into grids far southeast 
County Warning Area. 


Guidance has continued to trend north and stronger with the track of 
this system and comparing guidance with surface observation and best surface 
pressure falls it would seem to support the farther north track that 
the rap in particular has latched onto. The somewhat deeper low 
along with the very strong Arctic high spreading southeast will 
result in very strong winds developing this afternoon. Increasing 
low level cold air advection and surface height rises favor pretty good 
mixing in the boundary layer...which is what all model forecast 
soundings are advertising. Taking even the best case scenario and 
one of the weakest models BUFKIT momentum Transfer values support 
4-7 hours of wind gusts between 35-40 miles per hour later this afternoon and 
evening...with more aggressive GFS/rap supporting even stronger 
winds over a longer duration. Snow has been wet thus far but with 
time should see the transition toward drier/more blowable snow this 
afternoon from north to south as the column cools and the snow 
liquid content decreases. Biggest uncertainty revolves around 
regarding upgrade to Blizzard Warning was the snow liquid content 
and probability and confidence is certainly higher the farther north 
from I-80 that you get...but even as far south as I-80 felt fairly 
confident that white out conditions could develop late this 
afternoon and especially this evening. Farther west across north 
central Illinois feel that a Blizzard Warning could easily be 
justified...but in coordination with mkx/dvn have opted to hold off 
for now as snow intensity could be decreasing as winds pick up. 
Quite possible day shift may need to re-access this and an upgrade 
to Blizzard Warning for rfd and points west could occur on the day 
shift. 


Other big change to forecast was to add sleet and then drizzle to 
the far southeast County Warning Area. Surface temperatures have been a bit warmer and the 
farther north track of the surface low should keep low level warm air advection going 
into early afternoon with at least the threat of mixed 
precipitation...possibly transitioning over to just drizzle/snizzle as middle 
level dry slot overspreads that area removing ice nuclei from the 
clouds late this afternoon into this evening. The wetter snow south 
of I-80 should result in less severe and less impactful 
blowing/drifting snow. Given the marginal temperatures and potential mix 
precipitation have cut back on accums in the far southeast counties of the 
County Warning Area. 


Accumulating lake effect potential actually looks somewhat less 
impressive than it did last night...and it was already looking 
marginal. Some system snows should linger into this evening but lake 
contributions look minor with low inversion heights and decreasing 
boundary layer relative humidity as the thermodynamics improve ever so slightly. 
Any lake enhancement to snow totals should end up being trivial. 


Finally...going snowfall totals look right on target and made very 
few changes other than in southeast as noted above. A respectably large 
swath of a foot or more of snow still looks likely and probably 
centered relatively close to the I-80 to I-88/290 corridors. 
Actually thinking that maximum snowfall totals in the County Warning Area could end up 
being on the high end of the 10-14 inch range with localized totals 
potentially pushing a foot and a half if the defo band is indeed as 
impressive as some of the guidance would suggest. While snowfall 
totals will be very impressive over most of the County Warning Area...it is 
important to remember the Blizzard Warning is issued not for 
snowfall amounts but rather for visibility and winds. The criteria 
for Blizzard Warning is 3+ hours of less than 1/4sm visibility in falling 
and/or blowing snow along with sustained winds or frequent gusts 
over 35 miles per hour. 


Izzi 


&& 


Long term... 


Monday night through Saturday... 


134 am...forecast concerns include a chance of light snow Monday 
night into Tuesday...then a better chance for accumulating light 
snow Tuesday night into Wednesday morning. 


A ridge of high pressure will be moving southeast of the area 
Monday evening as a weak wave moves across the region Monday night. 
Fairly light quantitative precipitation forecast from all the models with this wave but plenty cold 
enough for the low quantitative precipitation forecast amounts to potentially fluff up to a half 
inch Monday night. While temperatures by this time will likely be in the 
single digits or low teens...cloud cover and weak warm air advection 
may allow temperatures to hold steady or rise a few degrees overnight. 


Next wave quickly shifts southeast across the area by Tuesday 
evening with quantitative precipitation forecast amounts between one and two tenths. This has been 
a fairly consistent feature on the models and if this materializes 
as advertised...a few inches of snow will be possible. Timing and 
location also are a bit uncertain...earlier could impact the Tuesday 
evening rush...later could impact the Wednesday morning rush. But 
given the potential for some accumulation...opted to bump probability of precipitation up to 
likely for Tuesday night. 


High pressure then settles south across the Midwest and lakes region 
Wednesday into Thursday and with it...some very cold air. With a 
deep snowpack by that time and diminishing winds Wednesday night 
into Thursday...expect many locations to drop below zero for lows 
Thursday morning. The airmass modifies/warms some Thursday but 
still expecting lows in the lower single digits Thursday evening... 
possibly below zero but warm air advection by morning with 
increasing southerly winds may put the brakes on how low temperatures fall 
Thursday night. Strong southerly winds continue into Saturday with 
warming temperatures...that will likely be muted some by the snowpack. Cms 


&& 


Aviation... 


//Ord and mdw concerns...updated 12z... 


* snow through tomorrow morning. Prevailing visible under 1sm through 
this evening. Visible around 1/2sm through early evening. 


* Northeasterly winds increasing through the morning...gusting to 30-35kt 
this afternoon. Occasional higher gusts possible. 


* Blowing and drifting snow likely this afternoon and tonight. 


* Periods of visible 1/4sm or less this afternoon when gusts increase 
to 30kt and higher. 


* IFR-LIFR ceilings through late evening. 


Krein 


//discussion...updated 12z... 


Long duration snow event underway as low pressure over Missouri 
moves east through southern Illinois and Indiana by this evening 
as it slowly strengthens. Moisture streaming north from the Gulf 
of Mexico will allow this system to produce moderate snow through 
this evening...before slowly tapering off late tonight into early 
Monday morning. Visibilities will likely fluctuate with heavier 
bands of snow...but prevailing visible likely to be around 1/2sm for 
much of the event. As winds strengthen with gusts of 30-35kt...or 
possibly higher...this afternoon and early evening...visible could 
drop to 1/4sm or lower in periods of heavier snowfall and stronger 
wind gusts. Winds will turn more northerly late this evening and 
then begin to diminish early Monday morning as high pressure 
builds in from the west. 


Krein 




//Ord and mdw confidence...updated 12z... 


* medium to high confidence in weather/visible trends. 


* Medium confidence in ceiling trends. 


* Medium confidence in timing of improving cig/vis. 


* Medium to high confidence in wind trends. 


Krein 


//outlook for Ord/mdw for 00z Tuesday-12z Sunday...updated 12z... 


Monday night...VFR/wx none early. Chance snow with MVFR ceilings/visible 
late. 


Tuesday...slight chance snow early with MVFR cigs/vis. VFR/weather none 
afternoon. Snow likely with IFR ceiling/visible overnight. 


Wednesday...slight chance snow with MVFR ceiling/visible early. VFR/weather none 
overnight. 


Thursday...VFR/wx none. 


Friday...VFR/wx none. 


Saturday...slight chance snow with MVFR ceiling/visible possible. 


Krein 


&& 


Marine... 
315 am CST 


The surface low over the plains looks to be deepening a little faster 
and lower while the high pressure ridging over the upper Great 
Lakes is trending a little stronger. This combination with strong 
cold advection setting up over the lake today...have expanded the 
Gale Warning over the entire open waters of Lake Michigan as well 
as extending in time...starting a little earlier...at 15z this 
morning and going a little later...to 09z tonight. Also...have 
increased gales to 40kt over the southern portions of the lake 
where the pressure gradient and pressure falls are strongest. As 
the winds pick up to gale force and much colder air filters over 
the lake later today...heavy freezing spray will be likely...so 
have also issued a heavy freezing spray warning from 15z this 
morning to 09z tonight. The colder air will spread over the 
northern portions of the lake earlier than the southern 
portions...so it is possible that the heavy freezing spray 
potential may not reach the southern portions of the lake until 
this afternoon...but went with one segment to the warning to 
coincide with the Gale Warning timing. The low should push east 
into the middle Atlantic region be Monday afternoon...while high 
pressure spreads across the Mississippi River into the western 
Great Lakes region. This will lead to subsiding winds and 
waves...especially as weak high pressure pressure crosses the lake 
Monday night and Tuesday. 


Krein 


&& 


Lot watches/warnings/advisories... 
Illinois...Winter Storm Warning...ilz005-ilz006-ilz011-ilz012-ilz013-ilz014- 
ilz020-ilz022 until 2 PM Sunday. 


Lakeshore Flood Advisory...ilz006-ilz014...2 PM Sunday to 10 am 
Monday. 


Blizzard Warning...ilz005-ilz006-ilz011-ilz012-ilz013-ilz014- 
ilz020-ilz022...2 PM Sunday to midnight Monday. 


Winter Storm Warning...ilz003-ilz004-ilz008-ilz010-ilz019-ilz021- 
ilz023-ilz032-ilz033-ilz039 until midnight Monday. 


In...Blizzard Warning...inz001...2 PM Sunday to midnight Monday. 


Winter Storm Warning...inz001 until 2 PM Sunday. 


Winter Storm Warning...inz002-inz010-inz011-inz019 until 
midnight Monday. 


Lm...Gale Warning...lmz080-lmz261-lmz362-lmz364-lmz366-lmz563-lmz565- 
lmz567-lmz669-lmz671-lmz673-lmz675-lmz740-lmz741-lmz742- 
lmz743-lmz744-lmz745-lmz777-lmz779-lmz868-lmz870-lmz872- 
lmz874-lmz876-lmz878...9 am Sunday to 3 am Monday. 


Heavy freezing spray warning...lmz080-lmz261-lmz362-lmz364- 
lmz366-lmz563-lmz565-lmz567-lmz669-lmz671-lmz673-lmz675- 
lmz740-lmz741-lmz742-lmz743-lmz744-lmz745-lmz777-lmz779- 
lmz868-lmz870-lmz872-lmz874-lmz876-lmz878...9 am Sunday to 
3 am Monday. 


Small Craft Advisory...Illinois nearshore waters until 9 am Sunday. 


&& 


$$ 


Visit US at http://weather.Gov/Chicago (all lowercase) 


Follow US on facebook...twitter...and youtube at: 
www.Facebook.Com/nwschicago 
www.Twitter.Com/nwschicago 
www.Youtube.Com/nwschicago 



National Weather Service Glossary of Abbreviations

Non-Expanded Version (with abbreviations)

Powered by the Weather Underground, Inc.