Alert archive / Illinois / Heat Advisories in 2015
Heat Advisory 2, NWS Lincoln, IL
NWS Lincoln, IL issued this heat advisory at Jul 17, 2015, 10:16 AM CDT for 35 counties in Illinois. It took effect at Jul 17, 2015, 12:00 PM CDT. It was in force for 31 hr.
The area
The counties it named.
The facts
- Issued
- Jul 17, 2015, 10:16 AM CDT (15:16 UTC)
- In effect from
- Jul 17, 2015, 12:00 PM CDT
- Expired
- Jul 18, 2015, 7:00 PM CDT
- In force
- 31 hr
- Issued by
- NWS Lincoln, IL
All 35 counties
Cass County, IL, Champaign County, IL, Christian County, IL, Clark County, IL, Clay County, IL, Coles County, IL, Crawford County, IL, Cumberland County, IL, DeWitt County, IL, Douglas County, IL, Edgar County, IL, Effingham County, IL, Fulton County, IL, Jasper County, IL, Knox County, IL, Lawrence County, IL, Logan County, IL, Macon County, IL, Marshall County, IL, Mason County, IL, McLean County, IL, Menard County, IL, Morgan County, IL, Moultrie County, IL, Peoria County, IL, Piatt County, IL, Richland County, IL, Sangamon County, IL, Schuyler County, IL, Scott County, IL, Shelby County, IL, Stark County, IL, Tazewell County, IL, Vermilion County, IL, Woodford County, IL
The radar
The Lincoln radar (KILX), 42 km from the middle of the area, began a volume at 15:18 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 3.3 hours before the alert went out and 46 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 2277 J/kg
- Mixed-layer CIN
- -132 J/kg
- Mixed-layer LCL
- 1052 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 65 m²/s²
- 0-3 km storm-relative helicity
- 89 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 2.8
What forecasters said that day
The local office's own words before this heat advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Lincoln, IL wrote its last area forecast discussion before this heat advisory went out at Jul 17, 6:28 AM CDT, 3 hours 48 minutes earlier.
Area forecast discussion, Jul 17, 6:28 AM CDT, 3 hours 48 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE LINCOLN IL 628 AM CDT FRI JUL 17 2015 .SHORT TERM...(TODAY) ISSUED AT 347 AM CDT FRI JUL 17 2015 WARM FRONT HAS LIFTED NE OF CENTRAL IL EARLY THIS MORNING LEAVING CWA IN A TROPICAL AIRMASS. WILL ISSUE A SPECIAL WEATHER STATEMENT (SPS) TO ADDRESS THE HEAT WAVE FROM THIS AFTERNOON THROUGH THIS WEEKEND. HEAT INDICES SHOULD PEAK FROM 100-105F THIS AFTERNOON WITH HIGHEST READINGS IN WESTERN COUNTIES WHICH MAY COME CLOSE TO HEAT ADVISORY CRITERIA AROUND 105F ESPECIALLY FROM JACKSONVILLE WEST. HIGHS OF 89-93F THIS AFTERNOON WITH VERY MUGGY DEWPOINTS IN THE MID TO UPPER 70S. A FEW SHOWERS AND THUNDERSTORMS LINGER ALONG OUTFLOW BOUNDARY FROM MCS IN CENTRAL IL NORTH OF I-72 INTO FAR SE IA. HRRR IS HANDLING THIS ISOLATED CONVECTION WELL AND USED THIS MODEL FOR FORECAST TODAY WHICH SHIFTS THE ISOLATED CONVECTION FURTHER SE DURING THE MORNING. UNSTABLE AIRMASS THIS AFTERNOON WITH CAPES OF 2-3K J/KG WILL SUPPORT MORE ISOLATED SHOWERS AND THUNDERSTORMS THIS AFTERNOON AND EARLY EVENING. SPC HAS MARGINAL RISK OF SEVERE STORMS IN PARTS OF CENTRAL AND EASTERN IL DURING THAT TIME WITH 5% RISK OF DAMAGING WIND GUSTS EAST OF PEORIA AND SPRINGFIELD. BULK SHEAR IS WEAK TODAY (10-20 KTS) SO STORMS WILL NOT BE TOO ORGANIZED. .LONG TERM...(TONIGHT THROUGH THURSDAY) ISSUED AT 347 AM CDT FRI JUL 17 2015 EVEN HOTTER HEAT INDICES EXPECTED SATURDAY AFTERNOON PEAKING FROM 104-109F AND HEAT ADVISORY WILL LIKELY BE NEEDED THEN AND POSSIBLY IN SOUTHEAST IL ON SUNDAY AFTERNOON WHERE HEAT INDICES NEAR 105F. SAT APPEARS TO BE THE HOTTEST DAY WITH HIGHS IN THE LOW TO MID 90S WHILE SUNDAY HIGHS RANGE FROM MID 80S NW OF IL RIVER TO 90-95F IN SOUTH OF I-72. DEWPOINTS IN THE MID TO UPPER 70S TO COMBINE WITH THESE HOT TEMPS FOR THE HEAT INDICES TOPPING 105F. HEAT INDICES SUNDAY AFTERNOON RANGE FROM MID 90S OVER IL RIVER VALLEY TO 104-108F IN SOUTHEAST IL. ISOLATED SHOWERS AND THUNDERSTORMS POSSIBLE SAT AFTERNOON OVER MAINLY NORTHERN AREAS. THEN INCREASING CHANCES OF SHOWERS AND THUNDERSTORMS OVER AREAS NORTH OF I-72 OVERNIGHT SAT NIGHT WITH APPROACHING COLD FRONT FROM THE UPPER MIDWEST. SPC HAS MARGINAL RISK OF SEVERE STORMS NW OF LINCOLN SAT NIGHT FOR GUSTY WINDS WHILE SLIGHT RISK IS NW OF KNOX AND STARK COUNTIES. 00Z FORECAST MODELS TRACK COLD FRONT SE ACROSS CENTRAL IL ON SUNDAY AND INTO SOUTHEAST IL SUNDAY EVENING. THIS TO LIKELY BRING A ROUND OF SHOWERS AND THUNDERSTORMS. SPC HAS ALL BUT FAR SOUTHEAST IL IN SLIGHT RISK OF SEVERE STORMS SUNDAY AFTERNOON/EVENING FOR MAINLY DAMAGING WIND GUSTS. UPPER LEVEL SUBTROPICAL HIGH PRESSURE RIDGE EXPECTED TO RETROGRADE BACK INTO THE HIGH PLAINS EARLY NEXT WEEK. THIS WILL BRING A NORTHWEST FLOW OVER IL WITH TEMPS COOLING CLOSER TO NORMAL ON MONDAY BEHIND THE COLD FRONT WITH HIGHS OF 82-87F. DEWPOINTS SLIPPING INTO THE MID TO UPPER 60S OVER CENTRAL AND NW CWA AND LOWER 70S IN SOUTHEAST IL ON MONDAY. HAVE TRENDED POPS LOWER ON MONDAY INTO MONDAY NIGHT WITH FRONT GETTING FURTHER SOUTH OF CENTRAL IL INTO THE TN VALLEY WITH CHANCE POPS IN SOUTHEAST IL, SLIGHT CHANCES CENTRAL PARTS AND DRY FROM I-74 NORTH. UPPER LEVEL RIDGE TO EXPAND EAST INTO THE MID MS AND OHIO VALLEYS BY MIDDLE OF NEXT WEEK WITH 850MB TEMPS CLIMB BACK UP TO LOWER 20SC WED/THU. HIGH TEMPS IN THE LOW TO MID 80S TUE SHOULD ELEVATE INTO THE MID TO UPPER 80S WED AND 85-90F THU, AND UPPER 80S/LOWER 90S NEXT FRI. DEWPOINTS TO CLIMB BACK INTO THE 70S LATER NEXT WORK WEEK. ECMWF AND GEM MODELS ARE STILL DRIER DURING MIDDLE OF NEXT WEEK WHILE GFS MODEL BRINGS QPF BACK INTO CENTRAL IL ON TUE. GFS MODEL IS AN OUTLIER AND JUST KEPT SLIGHT CHANCES OF CONVECTION ON TUE AND AREAS FROM I-72 NORTH ON WED NIGHT AND THU. && .AVIATION...(FOR THE 12Z TAFS THROUGH 12Z SATURDAY MORNING) ISSUED AT 620 AM CDT FRI JUL 17 2015 OTHER THAN AN HOUR OR TWO OF MVFR VSBYS IN FOG...VFR CONDITIONS ARE EXPECTED THRU THIS FORECAST PERIOD. FORECAST SOUNDINGS INDICATE ONLY SCATTERED CUMULUS THIS AFTERNOON WITH BASES AROUND 4000 FEET. SURFACE WINDS WILL BE FROM THE SOUTHWEST AT 10 TO 15 KTS WITH A FEW GUSTS AROUND 20 KTS DURING THE AFTERNOON. A LIGHT SOUTHWEST WIND IS EXPECTED TONIGHT WITH SPEEDS OF 3 TO 8 KTS. && .ILX WATCHES/WARNINGS/ADVISORIES... NONE. && SHORT TERM...07 LONG TERM...07 AVIATION...SMITH
Hazardous weather outlook, Jul 17, 5:30 AM CDT, 4 hours 46 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE LINCOLN IL 530 AM CDT FRI JUL 17 2015 ILZ027>031-036-037-040-041-047>050-181100- CASS-FULTON-KNOX-MARSHALL-MASON-MENARD-MORGAN-PEORIA-SCHUYLER- SCOTT-STARK-TAZEWELL-WOODFORD- 530 AM CDT FRI JUL 17 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL ILLINOIS...NORTH CENTRAL ILLINOIS AND WEST CENTRAL ILLINOIS. .DAY ONE...TODAY AND TONIGHT HOT AND HUMID CONDITIONS WILL PREVAIL OVER CENTRAL AND WEST CENTRAL ILLINOIS TODAY. AFTERNOON HEAT INDEX VALUES WILL RANGE FROM 100 TO 105 DEGREES. ISOLATED THUNDERSTORMS WILL BE POSSIBLE ACROSS THE AREA TODAY. ALTHOUGH NO ORGANIZED SEVERE WEATHER IS ANTICIPATED...A FEW OF THE STORMS COULD PRODUCE GUSTY WINDS AND BRIEF HEAVY RAINFALL. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY PEAK HEAT INDEX VALUES WILL RANGE FROM 103 TO 108 DEGREES SATURDAY AFTERNOON. SCATTERED THUNDERSTORMS WILL RETURN TO THE AREA FOR LATE SATURDAY THROUGH SUNDAY. SOME OF THESE STORMS MAY BE STRONG TO SEVERE... ESPECIALLY SUNDAY AFTERNOON AND EVENING AS A COLD FRONT APPROACHES THE AREA. MODERATE TO MAJOR FLOODING WILL CONTINUE ON THE ILLINOIS RIVER WITH MINOR FLOODING FORECAST ALONG PORTIONS OF THE SPOON RIVER BASIN. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED THROUGH TONIGHT. ILZ038-042>046-051>057-061-181100- CHAMPAIGN-CHRISTIAN-COLES-DE WITT-DOUGLAS-EDGAR-LOGAN-MACON- MCLEAN-MOULTRIE-PIATT-SANGAMON-SHELBY-VERMILION- 530 AM CDT FRI JUL 17 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL ILLINOIS AND EAST CENTRAL ILLINOIS. .DAY ONE...TODAY AND TONIGHT HOT AND HUMID CONDITIONS WILL PREVAIL OVER CENTRAL AND EAST CENTRAL ILLINOIS TODAY. AFTERNOON HEAT INDEX VALUES WILL RANGE FROM 100 TO 105 DEGREES. ISOLATED TO WIDELY SCATTERED THUNDERSTORMS WILL BE POSSIBLE ACROSS THE AREA TODAY. ALTHOUGH NO ORGANIZED SEVERE WEATHER IS ANTICIPATED...A FEW OF THE STORMS COULD PRODUCE GUSTY WINDS AND BRIEF HEAVY RAINFALL. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY PEAK HEAT INDEX VALUES WILL RANGE FROM 103 TO 108 DEGREES SATURDAY AFTERNOON. SCATTERED THUNDERSTORMS WILL RETURN TO THE AREA FOR LATE SATURDAY THROUGH SUNDAY. SOME OF THESE STORMS MAY BE STRONG TO SEVERE... ESPECIALLY SUNDAY AFTERNOON AND EVENING AS A COLD FRONT APPROACHES THE AREA. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED THROUGH TONIGHT. ILZ062-063-066>068-071>073-181100- CLARK-CLAY-CRAWFORD-CUMBERLAND-EFFINGHAM-JASPER-LAWRENCE-RICHLAND- 530 AM CDT FRI JUL 17 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EAST CENTRAL ILLINOIS...SOUTH CENTRAL ILLINOIS AND SOUTHEAST ILLINOIS. .DAY ONE...TODAY AND TONIGHT HOT AND HUMID WEATHER IS EXPECTED OVER EAST CENTRAL AND SOUTHEAST ILLINOIS TODAY. PEAK HEAT INDEX VALUES THIS AFTERNOON WILL RANGE FROM 100 TO 105 DEGREES. ISOLATED TO WIDELY SCATTERED THUNDERSTORMS ARE POSSIBLE TODAY. ALTHOUGH NO ORGANIZED SEVERE WEATHER IS EXPECTED...A FEW OF THE STORMS THIS AFTERNOON AND EVENING MAY BE CAPABLE OF PRODUCING GUSTY WINDS AND BRIEF HEAVY RAINFALL. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY PEAK HEAT INDEX VALUES OF 103 TO 108 DEGREES ARE EXPECTED SATURDAY AND SUNDAY AFTERNOONS. THUNDERSTORM CHANCES WILL RETURN TO THE AREA LATER SUNDAY...AND LINGER INTO MONDAY. SOME OF THESE MAY BE STRONG TO SEVERE...ESPECIALLY SUNDAY AFTERNOON AND EVENING. MINOR FLOODING WILL CONTINUE ALONG THE WABASH RIVER THE NEXT SEVERAL DAYS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED THROUGH TONIGHT. SMITH
In the hours before
Local storm report, Jul 17, 8:07 AM CDT, 2 hours 9 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN IL
807 AM CDT FRI JUL 17 2015
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0800 AM HEAVY RAIN YATES CITY 40.78N 90.01W
07/17/2015 M1.92 INCH KNOX IL CO-OP OBSERVER
&&
JRPLocal storm report, Jul 17, 8:25 AM CDT, 1 hour 51 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN IL
825 AM CDT FRI JUL 17 2015
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0800 AM HEAVY RAIN 5 NW PEORIA 40.80N 89.68W
07/17/2015 M1.00 INCH PEORIA IL CO-OP OBSERVER
0700 AM HEAVY RAIN MORTON 40.61N 89.47W
07/17/2015 M1.34 INCH TAZEWELL IL CO-OP OBSERVER
&&
JRPLocal storm report, Jul 17, 8:36 AM CDT, 1 hour 40 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN IL
836 AM CDT FRI JUL 17 2015
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0800 AM HEAVY RAIN KNOXVILLE 40.91N 90.29W
07/17/2015 M2.47 INCH KNOX IL CO-OP OBSERVER
&&
JRPLocal storm report, Jul 17, 8:37 AM CDT, 1 hour 39 minutes before
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE LINCOLN IL
837 AM CDT FRI JUL 17 2015
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0600 AM HEAVY RAIN CANTON 40.56N 90.04W
07/17/2015 M1.48 INCH FULTON IL CO-OP OBSERVER
0603 AM HEAVY RAIN PEORIA 40.74N 89.61W
07/17/2015 M1.25 INCH PEORIA IL MESONET
0636 AM HEAVY RAIN KNOXVILLE 40.91N 90.29W
07/17/2015 M2.64 INCH KNOX IL MESONET
0700 AM HEAVY RAIN 1 N MACKINAW 40.55N 89.36W
07/17/2015 M1.04 INCH TAZEWELL IL CO-OP OBSERVER
0700 AM HEAVY RAIN GALESBURG 40.95N 90.38W
07/17/2015 M3.04 INCH KNOX IL CO-OP OBSERVER
0700 AM HEAVY RAIN 5 SSW AVON 40.60N 90.47W
07/17/2015 M2.34 INCH MCDONOUGH IL CO-OP OBSERVER
0700 AM HEAVY RAIN MORTON 40.61N 89.47W
07/17/2015 M1.34 INCH TAZEWELL IL CO-OP OBSERVER
0721 AM HEAVY RAIN SE DUNLAP 40.86N 89.68W
07/17/2015 M1.56 INCH PEORIA IL MESONET
0800 AM HEAVY RAIN KNOXVILLE 40.91N 90.29W
07/17/2015 M2.47 INCH KNOX IL CO-OP OBSERVER
0800 AM HEAVY RAIN YATES CITY 40.78N 90.01W
07/17/2015 M1.92 INCH KNOX IL CO-OP OBSERVER
0800 AM HEAVY RAIN 5 NW PEORIA 40.80N 89.68W
07/17/2015 M1.00 INCH PEORIA IL CO-OP OBSERVER
&&
JRPLocal storm report, Jul 17, 9:32 AM CDT, 44 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN IL
932 AM CDT FRI JUL 17 2015
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0815 AM HEAVY RAIN EUREKA 40.72N 89.28W
07/17/2015 M1.04 INCH WOODFORD IL CO-OP OBSERVER
&&
JRPLocal storm report, Jul 17, 10:14 AM CDT, 2 minutes before
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</html>The office that day
Everything else NWS Lincoln, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 16, 7:25 PM CDT | Tornado Warning | ILX | Knox | 50 min |
| Jul 16, 7:49 PM CDT | Severe Thunderstorm Warning | ILX | Fulton, Knox | 41 min |
| Jul 16, 8:04 PM CDT | Flash Flood Warning | ILX | Knox | 6 hr |
| Jul 16, 8:27 PM CDT | Severe Thunderstorm Warning | ILX | Peoria | 48 min |
| Jul 16, 8:48 PM CDT | Flash Flood Warning | ILX | Peoria | 6 hr |
| Jul 16, 9:00 PM CDT | Tornado Warning | ILX | Fulton, Peoria | 30 min |
| Jul 16, 9:02 PM CDT | Tornado Warning | ILX | Fulton | 28 min |
| Jul 16, 9:23 PM CDT | Severe Thunderstorm Warning | ILX | Marshall, Tazewell, Woodford | 52 min |
| Jul 16, 9:28 PM CDT | River Flood Warning | ILX | Fulton, Knox | 62 hr |
| Jul 16, 9:34 PM CDT | Severe Thunderstorm Warning | ILX | Logan, Mason, Tazewell | 41 min |
| Jul 16, 11:40 PM CDT | Flash Flood Warning | ILX | Tazewell | 6 hr |
| Jul 17, 12:13 AM CDT | Severe Thunderstorm Warning | ILX | Logan, McLean, Tazewell | 47 min |
| Jul 17, 12:38 AM CDT | Severe Thunderstorm Warning | ILX | DeWitt, Logan, McLean | 52 min |
| Jul 17, 10:04 AM CDT | River Flood Warning | ILX | Fulton | 53 hr |
| Jul 17, 5:36 PM CDT | Special Weather Statement | ILX | Clark | 24 min |
Nearby
Heat Advisories in Illinois, 2015Every heat advisory in 2015
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.