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Stephenson County, IL Weather and Climate Synopsis

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Weather Summary Hourly Observations Nowcast Agricultural Weather Outlook
7 Day Forecast Medium & Long Range Outlook Almanac Historical Facts

US Weekly Rainfall Departure

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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
720 PM CST Mon Feb 19 2018

A warm front brought scattered showers and thunderstorms to
central and southeast Illinois on Monday, along with unseasonably
warm temperatures. Highs ranged from around 60 degrees near I-74,
to 70 degrees south of I-70.

Low pressure will track into the lower Great Lakes tonight, as a 
cold front slowly approaches from the Plains. Several waves of 
showers and thunderstorms are expected across the Midwest, for
tonight through Tuesday. Periods of heavy rain are possible, with
total rainfall amounts of 2 to 4 inches expected by midweek. This
could cause significant rises on area streams and rivers. Southerly
wind flow will produce spring-like temperatures across the 
region, through Tuesday. As the cold front pushes through on 
Tuesday night, lingering rain could change to light freezing rain,
primarily northwest of I-55.

Low temperatures tonight will range from the upper 20s in northern
Iowa, to the mid 60s in southern Illinois. Highs on Tuesday will
range from the upper 20s in northern Iowa, to near 80 degrees in
southern Indiana.

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

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Regional Hourly Observations For STEPHENSON County
Issued at 900 PM CST MON FEB 19 2018

MOLINE         LGT RAIN  51  50  96 W9        29.75R FOG              
STERLING*      LGT RAIN  55  54  96 MISG        N/A  FOG              
SAVANNA*       CLOUDY    48  48 100 SW5       29.76R                  

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 900pm CST, Monday February 19, 2018

Across Illinois...temperatures are near 48 degrees north, near 64 degrees central, and near 66 degrees south. Current sky conditions are light rain north, cloudy central, and cloudy south. In the north, relative humidity is near 96%, and the dew point is near 47 degrees. In the central part of the state, relative humidity is near 80%, and the dew point is near 58 degrees. In the south, relative humidity is near 78%, and the dew point is near 59 degrees. Visibility is less than one mile north. Winds are from the south at 12 mph north, where conditions are not favorable for spraying due to light rain. Winds are from the south at 20 mph with gusts at 28 mph central, where conditions are not favorable for spraying due to strong winds. Winds are from the south at 14 mph south, where conditions are not favorable for spraying due to strong winds. The livestock cold stress index is in the no stress category north, no stress category central, and no stress category south. Based on current available observations, the highest temperature is 68 degrees at Salem, Harrisburg, and Centralia. The lowest temperature is 46 degrees at Rochelle.

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 STEPHENSON County,IL

550 PM CST Mon Feb 19 2018


Showers and isolated thunderstorms will continue through the
overnight hours. The strongest storms will produce heavy rain and
possibly some small hail. Ponding water and flooding along small 
streams are also possible due to the frozen ground. 

Dense fog with visibilities less than one quarter mile will 
linger over east central Iowa into northwest Illinois overnight 
and a dense fog advisory is in effect. 

Freezing rain is expected tonight northwest of a line from 
Manchester to Belle Plaine. Ice accumulations up to one tenth of 
an inch will be possible and a winter weather advisory is in 


There will be a potential for more freezing rain Tuesday morning 
northwest of a line from Manchester to Belle Plaine.

Locally heavy rainfall is possible Tuesday. The area most at risk
is along and east of the Mississippi River. Flooding along streams
and water on roads from rain filled ditches is possible. River
flooding is possible along the Rock River this week, and a flood
watch is in effect at Moline, Joslin, and Como.

Tuesday afternoon and night rain will change to snow and end from
northwest to southeast. A period of freezing rain or sleet is
expected during the transition to snow.


Spotter activation is not expected tonight. However reports of 
rainfall amounts greater than one inch, minor flooding, and 
freezing rain are appreciated.

NWS Severe Weather Map , Convective Outlook

7-Day Forecast For STEPHENSON County, IL
757 PM CST Mon Feb 19 2018


Periods of rain showers. Widespread dense fog. Low in the upper 30s. South wind 5 to 10 mph. Gusts up to 25 mph in the evening. Chance of showers near 100 percent.

Widespread dense fog in the morning. Rain. High in the upper 40s. South wind 5 to 10 mph shifting to the west in the afternoon. Chance of rain 90 percent.

Colder. Mostly cloudy. A 40 percent chance of light rain, freezing rain and snow in the evening. Low around 19. Northwest wind 10 to 15 mph with gusts to around 25 mph.

Colder. Mostly sunny. High in the upper 20s. North wind 10 to 15 mph.

Partly cloudy in the evening then becoming mostly cloudy. Low around 19. Northeast wind 5 to 10 mph.

Partly sunny. High in the mid 30s.

Mostly cloudy with a 50 percent chance of snow. Low in the upper 20s.

Mostly cloudy. A 30 percent chance of rain and snow in the morning. High in the lower 40s.

Mostly cloudy. Low in the mid 20s. High in the lower 40s.

Rain likely in the evening, then snow possibly mixed with rain after midnight. Low in the upper 20s. Chance of precipitation 80 percent.

Partly cloudy. High in the lower 40s. Low in the mid 20s.

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
                 6 TO 10 DAY  8 TO 14 DAY   30 DAY    90 DAY 
                FEB 25-MAR 1 FEB 27-MAR 5    MAR       MAR-MAY                      
                 -----------  -----------  --------  ---------
   Temperature:      Above        Above      Below     Normal                      
 Precipitation:      Above        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

Monday February 19, 2018 the 50th Day of Year

Declination -10.910000
Distance 0.999723 AU
Rise 07:46 EST Set 18:40 EST
Transit Meridian 13:12 EST
Civil Twilight Begins 07:19 EST Ends 19:07 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

A. Lapham, in Cincinnati, wrote the first public weather forecast.
Severe thunderstorms spawned sixty tornadoes in the southeastern U.S.,
killing more than 420 persons and causing three million dollars damage.
Georgia and the Carolinas hardest were hit in the tornado outbreak. (David
A tornado struck Mount Vernon IL. The tornado killed sixteen persons along
its 62 mile path. (David Ludlum)
High winds across the southern half of the Great Plains, gusting to 85 mph,
caused the worst duststorms since the 1930s. Graders were needed in places
to clear fence high dirt drifts. (The Weather Channel)

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