A joint service of the UK Ag Weather Center and the National Weather Service.
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Regional Hourly Observations For LASALLE County
Issued at 1000 AM CDT MON AUG 21 2017
NORTHEAST ILLINOIS CITY SKY/WX TMP DP RH WIND PRES REMARKS CHICAGO-OHARE PTSUNNY 78 70 76 W13 30.07S HX 80 CHICAGO-MIDWAY CLOUDY 80 71 74 W10 30.06S HX 84 AURORA PTSUNNY 76 73 91 W10 30.10S LANSING* CLOUDY 80 67 66 W10 30.08S HX 82 JOLIET* MOSUNNY 79 73 82 W12G17 30.09S HX 83 WAUKEGAN PTSUNNY 77 72 84 VRB6 30.06R DUPAGE AIRPORT CLOUDY 73 72 96 W9 30.08S FOG KANKAKEE* CLOUDY 80 71 75 W9 30.10S HX 83 WHEELING CLOUDY 78 72 81 W8 30.09R HX 80 MORRIS* PTSUNNY 77 71 83 W13G21 30.09R ROMEOVILLE* MOSUNNY 77 70 79 W14 30.09R NORTHERLY ISL N/A 77 67 71 SW12 N/A
Current Agricultural Weather Conditions in Illinois
Based on observations at 1000am CDT, Monday August 21, 2017
Across Illinois...temperatures are near 76 degrees north, near 81 degrees central, and near 84 degrees south. Current sky conditions are cloudy north, cloudy central, and not available south. In the north, relative humidity is near 82%, and the dew point is near 70 degrees. In the central part of the state, relative humidity is near 79%, and the dew point is near 74 degrees. The heat index is near 86 degrees central. In the south, relative humidity is near 76%, and the dew point is near 76 degrees. The heat index is near 93 degrees south. The livestock heat stress category is no stress north, no stress central, and danger south. Winds are from the northwest at 8 mph north, where conditions are favorable for spraying. Winds are from the southwest at 9 mph central, where conditions are favorable for spraying. Winds are from the south at 6 mph south, where conditions are not favorable for spraying due to not available. Based on current available observations, the highest temperature is 86 degrees at Marion. The lowest temperature is 67 degrees at Galesburg.
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 LASALLE County,IL
427 AM CDT Mon Aug 21 2017 /527 AM EDT Mon Aug 21 2017/ DAY ONE Today and Tonight. WEATHER HAZARDS EXPECTED: Significant Thunderstorm Risk...with an associated: Elevated Flooding Risk. Elevated Thunderstorm Wind Damage Risk...up to 60 MPH. Limited Hail Risk...up to quarter size. Limited Tornado Risk. DISCUSSION: An area of storms across Iowa early this morning will slowly move east southeast through late morning. Some of these thunderstorms may impact part of the area during mid morning through early afternoon. This is most favored south of a Dixon to Joliet to Valparaiso line. A few of the storms could be severe with mainly a wind and heavy rain threat. Thunderstorm potential increases again after dark from west to east across the area. Some of these storms may be severe with mainly a scattered damaging wind threat. Heavy rainfall is likely with any storms tonight, and it is possible some training occurs mainly in north central Illinois. This could result in flooding. DAYS TWO THROUGH SEVEN Tuesday through Sunday. TuesdayLimited Thunderstorm Risk. High Swim Risk. Sunday Limited Thunderstorm Risk. DISCUSSION: Gusty northwest to north winds Tuesday afternoon and night will result in a heightened risk of rip current for the northwest Indiana shores. SPOTTER INFORMATION STATEMENT Spotters may be needed today and tonight. GENERAL STORM MOTION OF THE DAY: Moving to the east at 20 mph through this evening, and moving to the east at 35 mph overnight.
7-Day Forecast For LASALLE County, IL
1050 AM CDT Mon Aug 21 2017
REST OF TODAY TONIGHT TUESDAY TUESDAY NIGHT WEDNESDAY WEDNESDAY NIGHT THURSDAY THURSDAY NIGHT FRIDAY THROUGH SUNDAY
FRIDAY THROUGH SUNDAY
12-48 Hr Surface,
12-48 Hr ETA 500mb/Sfc,
Day 1 Precip,
Day 2 Precip,
Days 1-5 Precip
Medium & Long Range Outlook For Illinois
ILLINOIS --------------------------------------------- 6 TO 10 DAY 8 TO 14 DAY 30 DAY 90 DAY AUG 26-30 AUG 28-SEP 3 AUG AUG-OCT ----------- ----------- -------- --------- Temperature: Below Below Above Above Precipitation: Below Normal Normal Normal .... Medium and long range outlooks provided by NCEP/K. Thomas Priddy5 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
Monday August 21, 2017 the 233th Day of Year --------------------------------------------------- SUN Declination 11.700000 Distance 0.999717 AU Rise 07:17 EDT Set 20:46 EDT Transit Meridian 14:01 EDT Civil Twilight Begins 06:50 EDT Ends 21:13 EDT 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
/////////////////////////////// AUGUST 21ST...HISTORIC WEATHER EVENTS ...1883... A tornado hit Rochester MN killing 31 persons and wrecking 1351 dwellings. (David Ludlum) ...1888... A tornado swarm occurred in Maryland and Delaware. Many waterspouts were seen over Chesapeake Bay. (Sandra and TI Richard Sanders - 1987) ...1918... A tornado struck Tyler MN killing 36 persons and destroying most of the business section of the town resulting in a million dollars damage. (David Ludlum) ...1983... The temperature at Fayetteville NC soared to 110 degrees to establish a state record. (The Weather Channel) ...1987... Early morning thunderstorms produced severe weather in eastern Iowa and west central Illinois. Thunderstorms produced wind gusts to 82 mph at Moline IL, and tennis ball size hail at Independence IA. Rock Island IL was drenched with 3.70 inches of rain. Total damage for the seven county area of west central Illinois was estimated at twelve million dollars. (National Weather Summary) (Storm Data) ...1988... Thunderstorms spawned several tornadoes in Iowa, produced wind gusts to 63 mph in the Council Bluffs area, and drenched Sioux Center IA with up to 6.61 inches of rain. (Storm Data) (The National Weather Summary) ...1989... Afternoon and evening thunderstorms produced severe weather from Kansas to Minnesota and North Dakota. Thunderstorms in Minnesota produced baseball size hail from Correll to north of Appleton. Thunderstorms in north central Kansas produced wind gusts higher than 100 mph at Wilson Dam. Thunderstorms around Lincoln NE produced baseball size hail and up to five inches of rain, and Boone NE was deluged with five inches of rain in an hour and a half. (The National Weather Summary) (Storm Data)
Ag Weather Center, Department of Biosystems & Agricultural Engineering, University of Kentucky