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Lake County, IL Weather and Climate Synopsis

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A joint service of the UK Ag Weather Center and the National Weather Service.

Weather Summary For Central And Southeast Illinois
National Weather Service Lincoln IL
922 PM CST Wed Dec 13 2017

Mostly cloudy skies and gusty northwest winds were seen across 
central and southeast Illinois this evening. Temperatures around 
the area at 8 PM, ranged from 32 degrees at Lacon, to 45 degrees 
at Lawrenceville.

As this latest clipper system slides east of the Midwest
overnight, the strong gusty winds will slowly decrease. Cold air
will filter into the Midwest on Thursday. As the week continues, 
another clipper system will progress over the Great Lakes on
Friday, bringing another chance for snowfall to end the week and 
to start the weekend. After this system, the ridge over the 
western part of the country starts to slide east bringing warmer 
conditions for the Midwest.

Low temperatures overnight, will range from the single digits 
above zero across northeast Wisconsin, to the lower 30s across the
southern portions of Missouri and Kentucky.

High temperatures on Thursday, will range from the middle 20s 
across southern Wisconsin and northeast Indiana, to the low 40s 
across southern Missouri and western Kentucky.

National Ag. Weather Outlook, International Ag. Weather Summary
Current Surface Map, [2nd Source TWC]

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Regional Hourly Observations For LAKE County
Issued at 200 AM CST THU DEC 14 2017

NORTHEAST ILLINOIS
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
CHICAGO-OHARE  PTCLDY    23  15  71 N15       29.87R WCI  10          
CHICAGO-MIDWAY NOT AVBL                                               
AURORA         NOT AVBL                                               
WAUKEGAN       NOT AVBL                                               
DUPAGE AIRPORT PTCLDY    21  18  86 NW15      29.88R WCI   8          
WHEELING       NOT AVBL                                               

Current Temperatures, Dewpoint Map, RH, Wind, Regional Obs, Surface 4-Panel
Meteograms : Springfield , Peoria , Quad City , Chicago (O'Hare) , Rockford


Current Agricultural Weather Conditions in Illinois
Based on observations at 200am CST, Thursday December 14, 2017

Across Illinois...temperatures are near 23 degrees north. Current sky condition is partly cloudy north. In the north, relative humidity is near 71%, and the dew point is near 15 degrees. Winds are from the north at 15 mph north, where conditions are not favorable for spraying due to strong winds. The wind chill is near 10 degrees north. Winds are unavailable central. Winds are unavailable south. The livestock cold stress index is in the no stress category north, unavailable category central, and unavailable category south. Based on current available observations, the highest temperature is 23 degrees at Rockford and O'Hare Airport. The lowest temperature is 23 degrees at Rockford and O'Hare Airport.


Current NOWCAST not available:
Nowcasts are not issued routinely during fair weather. Only when
precipitation or other significant weather is occuring in this county will these
forecasts be issued. Currently, there is no short term forecast in effect.

US Radar, All NWS Radars (In near-real time),Livestock Heat Stress Index (LSI), Wind Chill Map
Hazardous Weather Outlook For LAKE County,IL

306 PM CST Wed Dec 13 2017 /406 PM EST Wed Dec 13 2017/

 DAY ONE  Tonight.

WEATHER HAZARDS EXPECTED:

  Limited Non Thunderstorm Wind Risk.
  Elevated Snow Risk.

DISCUSSION:

Deepening low pressure is tracking across southeastern Wisconsin
and southern Lake Michigan this afternoon. This system is bringing
a mixed bag of precipitation to the area, with snow over northern
Illinois and rain over central Illinois and Indiana. A mix of rain
and snow is possible this afternoon along the Kankakee river
Valley. As the low passes to the east, strong winds will shift
from southwesterly to northwesterly, with gusts up to 30 mph
through the evening. A few higher gusts will be possible early
this evening. Precipitation will transition to a band of lake
effect snow overnight, with the band initially along the Illinois
shore of Lake Michigan and then transition to northwestern Indiana
overnight. Some snow accumulation is possible, with up to an inch
possible over far northeastern Illinois and 1 to 2 inches over
northwestern Indiana. Highest amounts should be closer to Lake
Michigan.

 DAYS TWO THROUGH SEVEN  Thursday through Tuesday.

Thursday  
  Elevated Snow Risk.
Friday  
  Limited Snow Risk.

DISCUSSION:

Lake effect snow is expected to continue over northwestern Indiana
until around noon on Thursday. An additional 1 to 2 inches of snow
accumulations is expected with locally higher amounts possible.

 SPOTTER INFORMATION STATEMENT  

Spotter activation will not be necessary through tonight.

NWS Severe Weather Map , Convective Outlook


7-Day Forecast For LAKE County, IL
905 PM CST Wed Dec 13 2017

REST OF TONIGHT
Mostly cloudy with a 40 percent chance of light snow showers. Lows 15 to 19. North winds 10 to 20 mph. Inland, gusts up to 30 mph late in the evening. Near the lake, gusts up to 35 mph.

THURSDAY
Partly cloudy. Highs in the upper 20s. Northwest winds 10 to 15 mph.

THURSDAY NIGHT
Mostly cloudy. A chance of flurries in the evening, then a slight chance of light snow after midnight. Lows 17 to 21. Southwest winds 5 to 10 mph. Chance of measurable precipitation 20 percent.

FRIDAY
Mostly cloudy. Slight chance of light snow in the morning, then a chance of flurries in the afternoon. Highs in the upper 20s. West winds 10 to 20 mph. Chance of measurable precipitation 20 percent.

FRIDAY NIGHT
Mostly cloudy. A chance of flurries. Lows around 20. West winds 10 to 15 mph.

SATURDAY
Partly sunny. Highs in the upper 30s.

SATURDAY NIGHT
Partly cloudy. Lows in the upper 20s.

SUNDAY
Mostly cloudy with a 40 percent chance of snow and rain. Highs in the upper 30s.

SUNDAY NIGHT THROUGH WEDNESDAY
Partly cloudy. Lows in the mid 20s. Highs in the upper 30s.

12-48 Hr Surface, 12-48 Hr ETA 500mb/Sfc, TWC Forecast, Fire Danger, Day 1 Precip, Day 2 Precip, Days 1-5 Precip
NGM 60 Hr Forecast Meteograms : Springfield , Peoria , Quad City , Chicago (O'Hare) , Rockford , Severe Weather Pot.-Day 1, Day 2


Medium & Long Range Outlook For Illinois
                             ILLINOIS                                                                     
                 ---------------------------------------------
                 6 TO 10 DAY  8 TO 14 DAY   30 DAY    90 DAY 
                   DEC 19-23    DEC 21-27    DEC       DEC-FEB                      
                 -----------  -----------  --------  ---------
   Temperature:     Normal        Below     Normal     Normal                      
 Precipitation:      Below        Above     Normal      Above                      

....  Medium and long range outlooks provided by NCEP/K. Thomas Priddy
5 Day Rainfall Forecast, 6 to 10 Day , 8 to 14 Day , Text, 30-Day Outook, 90-Day Outook, 120-Day Outlook
MRF 10-Day Forecast Meteograms : Springfield , Peoria , Quad City , Chicago (O'Hare) , Rockford

Almanac Information

Thursday December 14, 2017 the 348th Day of Year

---------------------------------------------------
SUN
Declination -23.270000
Distance 0.999725 AU
Rise 08:13 EST Set 17:35 EST
Transit Meridian 12:54 EST
Civil Twilight Begins 07:44 EST Ends 18:05 EST

Calculations made for central point in the state.
Time in ET -- and will vary due to location and
elevation -- Priddy


Historical Weather And Climate Facts For Today

DECEMBER 14TH
HISTORIC WEATHER EVENTS
...1901...
Wet and cold: Louisville, KY set both a record low (2 degrees) and a daily 
precipitation record (2.21 inches). (The high temperature that day was 42.)
(NWS Louisville)
...1924...
The temperature at Helena MT plunged 79 degrees in 24 hours, and 88 degrees
in 34 hours. The mercury plummeted from 63 above to 25 below zero. At
Fairfield MT the temperature plunged 84 degrees in just 12 hours, from 63
at Noon to 21 below zero at midnight. (David Ludlum)
...1987...
A powerful storm spread heavy snow from the Southern High Plains to the
Middle Mississippi Valley, and produced severe thunderstorms in the Lower
Mississippi Valley. During the evening a tornado hit West Memphis TN
killing six persons and injuring two hundred others. The tornado left 1500
persons homeless, and left all of the residents of Crittendon County
without electricity. Kansas City MO was blanketed with 10.8 inches of snow,
a 24 hour record for December, and snowfall totals in the Oklahoma
panhandle ranged up to 14 inches. Strong winds, gusting to 63 mph at Austin
TX, ushered arctic cold into the Great Plains, and caused considerable
blowing and drifting of snow. (Storm Data) (The National Weather Summary)
...1988...
Blowing snow was reported in western Kansas, as snow and gusty winds
plagued the Central Rockies and Central High Plains. Colorado Springs CO
reported thirteen inches of snow. Low pressure in Wisconsin brought heavy
snow to the Lake Superior snowbelt area, with 22 inches reported at
Marquette MI. (Storm Data) (The National Weather Summary)
...1989...
High winds and heavy snow prevailed from Montana to Colorado. Snowfall
totals in Wyoming ranged up to 20 inches at Burgess Junction, leaving up to
48 inches on the ground in the northeast sections of the state. Wind gusts
in Colorado reached 87 mph south of the town of Rollinsville. Strong
northwesterly winds continued to produce heavy snow squalls in the Great
Lakes Region. Totals in northeastern Lower Michigan ranged up to 29 inches
at Hubbard Lake, with 28 inches reported at Posen. Two day totals in
northeastern Wisconsin ranged up to thirty inches. (Storm Data) (The
National Weather Summary)

Ag Weather Center, Department of Biosystems & Agricultural Engineering, University of Kentucky