Alert archive / Illinois / Severe Thunderstorm Warnings in 1989
Severe Thunderstorm Warning 19, NWS Quad Cities, IA
NWS Quad Cities, IA issued this severe thunderstorm warning at May 24, 1989, 11:36 PM CDT for Henry County, Illinois. It was in force for 24 min.
The area
The counties it named.
The facts
- Issued
- May 24, 1989, 11:36 PM CDT (04:36 UTC)
- Expired
- May 25, 1989, 12:00 AM CDT
- In force
- 24 min
- Issued by
- NWS Quad Cities, IA
- Area
- Whole counties
County Henry County, IL
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Peoria Regional, IL (KPIA), launched 00:00Z, 4.6 hours before the alert went out and 88 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- NaN m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 230 m²/s²
- 0-3 km storm-relative helicity
- 347 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.9
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, May 24, 7:00 PM CDT, 4 hours 36 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DUBUQUE IA 700 PM CDT WED MAY 24 1989 ...TORNADO WATCH IS IN EFFECT FOR MOST OF THE TRI-STATE AREA UNTIL 10 PM... AT 655 PM CDT WEATHER RADAR INDICATED AN AREA OF ISOLATED SHOWERS WERE MOVING THROUGH CENTRAL DELAWARE COUNTY NEAR MANCHESTER...35 MILES EAST OF DUBUQUE. MOVEMENT OF THESE SHOWERS WAS TO THE EAST AT 35 MILES AN HOUR. AS OF 655 PM NO SEVERE WEATHER HAD BEEN REPORTED IN THE TRI-ST'ATE AREA. PERSONS IN THE TRI-STATE AREA SHOULD KEEP ABREAST OF CHANGING WEATHER CONDITIONS AND MONITIOR COMMERCIAL RADIO...TELEVISION OR NOAA WEATHER RADIO STATIONS. BAILEY
Special weather statement, May 24, 9:06 PM CDT, 2 hours 30 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DUBUQUE IA 906 PM CDT WED MAY 24 1989 ...TORNADO WATCH IS IN EFFECT FOR MOST OF THE TRI-STATE AREA UNTIL 10 PM... 900 PM CDT WEATHER RADAR INDICATED A LINE OF THUNDERSTORMS APPROACHING THE WESTERN EDGE OF THE TRI-STATE AREA. THESE STORMS HAVE PRODUCED PERIODS OF SEVERE WEATHER AS THEY HAVE MOVED THROUGH THE UPPER MID-WEST. MOVEMENT OF THESE STORMS WAS TO THE EAST AT 30 TO 35 MILES AN HOUR AN@D WILL CONTINUE TO MOVE TOWARD THE CENTRAL PART OF THE TRI-STATE AREA. PEOPLE ARE ADVISED TO BE AWARE OF CHANGING WEATHER CONDITIONS AND MONITOR THE LATEST FORECAST FROM THE NATIONAL WEATHER SERVICE. BAILEY
The office that day
Everything else NWS Quad Cities, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 24, 9:12 PM CDT | Severe Thunderstorm Warning | DVN | Delaware | 63 min |
| May 24, 10:09 PM CDT | Severe Thunderstorm Warning | DVN | Jones | 66 min |
| May 24, 10:49 PM CDT | Tornado Warning | DVN | Louisa, Muscatine | 26 min |
| May 24, 11:12 PM CDT | Tornado Warning | DVN | Muscatine, Scott | 18 min |
Nearby
Severe Thunderstorm Warnings in Illinois, 1989Every severe thunderstorm warning in 1989
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.