Hail in Illinois, April 21, 2001

Name: Hail in Illinois, April 21, 2001
Start: 2001-04-21T16:43
End: 2001-04-21T16:45
Location: Illinois

April 21, 2001 · NWS LSX · 2 events in 1 county or zone

A local radio station in Quincy and a storm spotter just south of Quincy reported 1 inch hail.

Where it happened

Every event with a place to put it. 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: 2

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.

A local radio station in Quincy and a storm spotter just south of Quincy reported 1 inch hail.

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 Apr 21, 2:15 PM CST, 2 hours 28 minutes earlier.

Area forecast discussion, Apr 21, 2:15 PM CST, 2 hours 28 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE ST LOUIS MO
315 PM CDT SAT APR 21 2001

SYNOP SITN SETTING UP FOR MDT TO HVY PCPN OVR PTNS OF FA BGNG TNGT
WITH WET PD CONTG THRU FROPA ON MON AND -RA OR SHRA ON TUE. MDLS
INITIALIZED WELL AT 12Z WITH 50H LO MOVG ONSHORE IN CTRL CA AND MOVG
SW US BFR RECURVING INTO NRN NM BY 24H. LO LIFTS QUICKLY INTO NRN
PLNS AND OPENS INTO WV BY 48H WITH 50H TROF CRSG FA APPROX 72H. THEN
RDG TO BLD OVR RCKY MTNS BY 84H WITH RGN IN NW FLOW THRU MIDWK.
TYPICAL MDL BIASES SHWG WITH NGM FRTHR N AND W AND ETA FRTHR S. AVN
IN BETWEEN. WL FAVOR BLEND OF ETA AND AVN.

MAIN PROBS THIS PKG TO BE PLACEMENT AND INTENSITY OF PCPN TNGT. VSBL
SAT SHWG CFNG BCMG NRLY STNRY OVR NW MO WITH PERSISTENT SHRA THRU
MRNG NOW DVLPG INTO TSRA. WV APPRS TO BE DVLPG ON FNT OVR SE KS WITH
CNVCTN DVLPG MORE RAPIDLY THERE. CORFIDI VCTRS MV TSTMS ENE ALG AND
AHD OF FNTL BNDRY. WITH FFG 1.1-1.6 IN/HR AND SUM 1.6/6HR VALS WL GO
WITH FLASH FLOOD WATCH FOR TNGT FOR NRN ZNS VCNTY STNRY FNT. FIRST
BATCH OF CNVCTN SHUD MV ACRS RGN THIS EVE WITH MDLS INDCTG MORE MCS
DVLPMT OVR KS TNGT AND TRACKING ALG FNT. STG LLJ BRINGING HI PW TO
RGN TO AID IN HEAVIER PCPN WITH TSRA.

WENT WITH BLEND ON TEMPS FOR ZNS AS FWC CONTS TO BE TOO COOL AND MAV
TOO WRM. BETTER AGMT WITH POPS. UPPED POPS TO CATEGORICAL IN NRN ZNS
WITH FF WATCH AND LIKELYS IN WRN ZNS TNGT. WL KP POPS OUT OF ERN ZNS
FOR SUN AS MOST ACTVTY TO RMN TO N AND W BUT WL KP CHC POPS THERE
FOR REST OF PKG.

.STL...FLASH FLOOD WATCH FOR TNGT FOR NE MO AND XTRM SW IL
       MOZ018-019-026-027-034>036 AND ILZ095>097.

WDB

In the hours before

Special weather statement, Apr 21, 10:45 AM CST, 5 hours 58 minutes before

ILZ058>060-064-065-069-070-074-079-095>102-MOZ018-019-026-027-
034>036-041-042-047>052-059>065-072>075-084-085-099-221100-

SEVERE WEATHER OUTLOOK
NATIONAL WEATHER SERVICE ST LOUIS MO
1145 AM CDT SAT APR 21 2001

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS TONIGHT OVER PARTS OF
CENTRAL AND EASTERN MISSOURI...AS WELL AS SOUTHWEST ILLINOIS.  THE
SLIGHT RISK AREA IS NORTH AND WEST OF A LINE FROM GREENVILLE
ILLINOIS TO ST. LOUIS MISSOURI TO FORT LEONARD WOOD MISSOURI.

A WEAK FRONTAL BOUNDARY HAS BECOME STATIONARY ACROSS NORTHWEST
MISSOURI TODAY...AND THUNDERSTORMS WILL BEGIN TO FORM ALONG THE
FRONT DURING THE AFTERNOON.

HOWEVER...MAIN SEVERE WEATHER THREAT WILL BE LATER TONIGHT...AS A
STRONG UPPER LEVEL SYSTEM PUSHES INTO THE AREA. THE INCREASE IN
WINDS AND MOISTURE THAT WILL OCCUR WITH THE APPROACH OF THE UPPER
SYSTEM WILL PRODUCE A THREAT OF LARGE HAIL AND DAMAGING WINDS.
HEAVY RAIN WILL BE A VERY RuEAL POSSIBILITY AS WELL.

EMERGENCY MANAGERS AND STORM SPOTTERS SHOULD KEEP ABREAST OF THE
LATEST STATEMENTS AND FORECASTS. SKYWARN ACTIVATION MAY BE REQUIRED
BY THIS EVENING AND TONIGHT.

BECHTOLD

The radar

The St Louis radar (KLSX), 150 km away, was scanning. The volume nearest the first event began at 22:45 UTC.

Open the radar archive at this moment

Event by event

2 hail. Local standard time, as filed.

Hail, Adams

When: April 21, 4:43 PM CST
Where: Adams County, Quincy
Measured: 1 in hail
Reported by: BROADCAST MEDIA
Coordinates: 39.933, -91.400

Hail, Adams

When: April 21, 4:45 PM CST
Where: Adams County, 2 mi S of Quincy
Measured: 1 in hail
Reported by: BROADCAST MEDIA
Coordinates: 39.900, -91.400

What these are

Hail: Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.

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, April 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: 5243805, 5243806.