Heat in Illinois, July 7 to 10, 2001

Name: Heat in Illinois, July 7 to 10, 2001
Start: 2001-07-07T11:00
End: 2001-07-10T21:00
Location: Illinois

July 7 to 10, 2001 · NWS LSX · 17 events in 17 counties and zones

The first real heat wave of the summer hit the area July 7 through July 10. Temperatures peaked in the middle to upper 90s with the Heat index ranging from 105 to 110.

Where it happened

Every event with a place to put it; 17 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.

Tornadoes
Tropical storms and surge
Floods
Wind
Hail
Winter weather
Heat and drought
Cold
Fire, smoke and dust
Marine and coastal
Other

Open the live radar over this ground

The toll

Deaths: 0
Injuries: 0
Property damage: None recorded
Crop damage: None recorded
Events: 17

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS LSX wrote it up.

The first real heat wave of the summer hit the area July 7 through July 10. Temperatures peaked in the middle to upper 90s with the Heat index ranging from 105 to 110.

What forecasters said that day

The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS St. Louis, MO wrote its last area forecast discussion before the first event at Jul 7, 2:20 AM CST, 8 hours 40 minutes earlier.

Area forecast discussion, Jul 7, 2:20 AM CST, 8 hours 40 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE ST LOUIS MO
320 AM CDT SAT JUL 7 2001

MAIN CONCERNS TO BE HEAT THRU SUN AND CHCS PCPN LT IN WKEND. HI TEMP
PTTN CONTS TO STRENGTHEN OVR FA WITH 50H RDG RMNG QSTNRY OVR
CTRL/SRN PLNS WITH WK S/WVS ROTATING ARND RDG. UPR FLOW TO CONT FM
NW WITH TIMING ON S/WVS DIFFICULT AT BEST. SUM LT NGT TSRA DVLPG AT
08Z ON NOSE OF LLJ ON WI/IL BDR AND CORFIDI VTRS WL MV S. MIDLVL CAP
DVLPG OVR RGN AS STG HOT PROD FM SW BUILDS AND CHCS FOR ANY TSRA
DVLPMT WL DEPEND ON EWD XTNSN OF CAP. WL KP MENTN OF SLG CHC TSRA IN
NRN ZN THIS MRNG.

TDA AND TNGT SHUD BE HOT AND HUMID AS WRM BNDRY MVS E OF FA TDA AND
TEMP/DP COMBO MEETS ADVSY CRIT. WL INTRO HEAT ADVSY FOR TDA AND CONT
THRU SUN FOR ALL XCPT ERN AND SRN ZN GPS. NGM QPF NOT ACCEPTED AGAIN
AND WL USE COMBO AVN/MESOETA GUID FOR POPS. WL DROP MENTN PCPN UNTIL
SUN NGT WITH CHC ALL ZNS XCPT SRN WHICH WL RMN DRY.

IN XTNDD WL CONT POPS MON AND TUE WITH SLGTLY COOLER TEMPS. REST OF
WK LKS DRY WITH NR NRML TEMPS.

.STL...HEAT ADVSY TDA THRU SUN FOR AREA W OF IL HIWAY 4 AND NW OF
       NEW ATHENS IL-FESTUS MO-VIBURNUM LINE INCLUDING
       ILZ095>097-MOZ018-019-026-027-034>036
       MOZ041-042-047>051-059
       ILZ058-059-098>102-MOZ052-060>065-072-073.

WDB

In the hours before

Special weather statement, Jul 7, 7:00 AM CST, 4 hours before

ILZ058>060-064-065-069-070-074-079-095-097>102-MOZ018-019-026-027-
034>036-041-042-047>052-059>065-072>075-084-085-099-071700-

SEVERE WEATHER OUTLOOK
NATIONAL WEATHER SERVICE ST LOUIS MO
800 AM CDT SAT JUL 7 2001

THE SEVERE WEATHER THREAT: A SLIGHT CHANCE FOR SEVERE THUNDERSTORMS
NORTH AND EAST OF A LINE FROM NASHVILLE IL TO ST LOUIS MO TO PARIS.

FOR THE PERIOD:  THIS AFTERNOON AND EVENING.

THE WEATHER OUTLOOK: SOME THUNDERSTORMS MAY DEVELOP OVER THE EASTERN
PORTION OF THE AREA THIS AFTERNOON AS A WARM FRONT PUSHES EAST. THE
MAIN THREAT FROM THESE STORMS WILL BE LARGE HAIL AND DAMAGING WINDS.

WDB

The radar

The national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

17 heat. Local standard time, as filed.

Heat, Adams

When: July 7, 11:00 AM CST to 9:00 PM CST
Where: Adams forecast zone
Reported by: OFFICIAL NWS OBS.
Coordinates: 39.988, -91.188 (the zone’s center; the record gives no point)

Heat, Brown

When: July 7, 11:00 AM CST to 9:00 PM CST
Where: Brown forecast zone
Reported by: OFFICIAL NWS OBS.
Coordinates: 39.962, -90.750 (the zone’s center; the record gives no point)

Heat, Bond

When: July 7, 11:00 AM CST to 9:00 PM CST
Where: Bond forecast zone
Reported by: OFFICIAL NWS OBS.
Coordinates: 38.887, -89.436 (the zone’s center; the record gives no point)

Heat, Calhoun

When: July 7, 11:00 AM CST to 9:00 PM CST
Where: Calhoun forecast zone
Reported by: OFFICIAL NWS OBS.
Coordinates: 39.169, -90.667 (the zone’s center; the record gives no point)

Heat, Clinton

When: July 7, 11:00 AM CST to 9:00 PM CST
Where: Clinton forecast zone
Reported by: OFFICIAL NWS OBS.
Coordinates: 38.607, -89.422 (the zone’s center; the record gives no point)

Heat, Fayette

When: July 7, 11:00 AM CST to 9:00 PM CST
Where: Fayette forecast zone
Reported by: OFFICIAL NWS OBS.
Coordinates: 39.000, -89.024 (the zone’s center; the record gives no point)

Heat, Greene

When: July 7, 11:00 AM CST to 9:00 PM CST
Where: Greene forecast zone
Reported by: OFFICIAL NWS OBS.
Coordinates: 39.356, -90.390 (the zone’s center; the record gives no point)

Heat, Jersey

When: July 7, 11:00 AM CST to 9:00 PM CST
Where: Jersey forecast zone
Reported by: OFFICIAL NWS OBS.
Coordinates: 39.086, -90.357 (the zone’s center; the record gives no point)

Heat, Macoupin

When: July 7, 11:00 AM CST to 9:00 PM CST
Where: Macoupin forecast zone
Reported by: OFFICIAL NWS OBS.
Coordinates: 39.261, -89.924 (the zone’s center; the record gives no point)

Heat, Madison

When: July 7, 11:00 AM CST to 9:00 PM CST
Where: Madison forecast zone
Reported by: OFFICIAL NWS OBS.
Coordinates: 38.830, -89.905 (the zone’s center; the record gives no point)

Heat, Marion

When: July 7, 11:00 AM CST to July 10, 9:00 PM CST
Where: Marion forecast zone
Reported by: OFFICIAL NWS OBS.
Coordinates: 38.650, -88.919 (the zone’s center; the record gives no point)

Heat, Monroe

When: July 7, 11:00 AM CST to July 10, 9:00 PM CST
Where: Monroe forecast zone
Reported by: OFFICIAL NWS OBS.
Coordinates: 38.279, -90.177 (the zone’s center; the record gives no point)

Heat, Montgomery

When: July 7, 11:00 AM CST to July 10, 9:00 PM CST
Where: Montgomery forecast zone
Reported by: OFFICIAL NWS OBS.
Coordinates: 39.231, -89.479 (the zone’s center; the record gives no point)

Heat, Pike

When: July 7, 11:00 AM CST to July 10, 9:00 PM CST
Where: Pike forecast zone
Reported by: OFFICIAL NWS OBS.
Coordinates: 39.623, -90.886 (the zone’s center; the record gives no point)

Heat, Randolph

When: July 7, 11:00 AM CST to July 10, 9:00 PM CST
Where: Randolph forecast zone
Reported by: OFFICIAL NWS OBS.
Coordinates: 38.052, -89.825 (the zone’s center; the record gives no point)

Heat, St. Clair

When: July 7, 11:00 AM CST to 9:00 PM CST
Where: St. Clair forecast zone
Reported by: OFFICIAL NWS OBS.
Coordinates: 38.470, -89.928 (the zone’s center; the record gives no point)

Heat, Washington

When: July 7, 11:00 AM CST to 9:00 PM CST
Where: Washington forecast zone
Reported by: OFFICIAL NWS OBS.
Coordinates: 38.352, -89.410 (the zone’s center; the record gives no point)

What these are

Heat: Heat below excessive heat criteria that still caused deaths, injuries or significant impacts.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

Every storm in Illinois in 2001 Every state in 2001 This day in weather history Warnings in Illinois, July 2001

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 5258654, 5258655, 5258656, 5258657, 5258658, 5258659, 5258660, 5258661, 5258662, 5258663, 5258664, 5258665, 5258666, 5258667, 5258668, 5258669, 5258670.