Alert archive / Iowa / Severe Thunderstorm Warnings in 1989
Severe Thunderstorm Warning 13, NWS Quad Cities, IA
NWS Quad Cities, IA issued this severe thunderstorm warning at Apr 26, 1989, 7:48 PM CDT for Des Moines County, Henry County, Lee County, Iowa. It was in force for 27 min. 2 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Apr 26, 1989, 7:48 PM CDT (00:48 UTC)
- Expired
- Apr 26, 1989, 8:15 PM CDT
- In force
- 27 min
- Issued by
- NWS Quad Cities, IA
- Area
- Whole counties
Counties Des Moines County, IA, Henry County, IA, Lee County, IA
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 26, 8:00 PM CDT | Thunderstorm Wind 50 | Henry, IA | |
| Apr 26, 8:03 PM CDT | Thunderstorm Wind 50 | Des Moines, IA |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Peoria Regional, IL (KPIA), launched 00:00Z, 0.8 hours before the alert went out and 153 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
- 1526 J/kg
- Mixed-layer CIN
- -61 J/kg
- Mixed-layer LCL
- 1669 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 42 m²/s²
- 0-3 km storm-relative helicity
- 111 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KMLI 270048
SVRMLI
IAC087-057-111-270115-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOLINE IL
748 PM CDT WED APR 26 1989
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
WARNING EFFECTIVE UNTIL 815 PM CDT FOR PEOPLE IN THE FOLLOWING
COUNTIES
IN THE SOUTHEAST PART OF IOWA
EASTERN HENRY...DES-MOINES...LEE
AT 740 PM CDT RADAR INDICATED A LINE OF THUNDERSTORMS...SOME
SEVERE EXTENDING FROM WASHINGTON TO DONNELLSON IN SOUTHEAST IOWA...
ABOUT 25 MILES WEST TO 35 MILES NORTHWEST OF BURLINGTON. THIS
LINE WAS MOVING SOUTHEAST AT 35 MILES AN HOUR.
THERE HAVE BEEN MANY REPORTS OF WIND DAMAGE AND HAIL WITH THIS
LINE.
SOME CITIES/TOWNS IN THE PATH OF THIS STORM INCLUDE: NEW LONDON...
MOUNT PLEASANT...WEST POINT AND DONNELLSON.
PEOPLE IN THE PATH OF THIS STORM SHOULD TAKE COVER IMMEDIATELY.
A SEVERE THUNDERSTORM CAN PRODUCE DAMAGING WIND OF 60 MPH OR MORE...
LARGE HAIL...FREQUENT DANGEROUS LIGHTNING AND HEAVY RAIN.
SEVERE THUNDERSTORMS CAN AND SOMETIMES DO PRODUCE TORNADOES...SO
BE ON THE LOOKOUT AND BE PREPARED TO MOVE TO A PLACE OF SAFETY IS
ONE IS SPOTTED.
IF TIME PERMITS...ASK THE NEAREST LAW ENFORC,EMENT AGENCY TO RELAY
YOUR REPORT OF SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE.
ILLIPSWhat 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, Apr 26, 3:13 PM CDT, 4 hours 35 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DUBUQUE IA 310 PM CDT WED APR 26 1989 ...SEVERE THUNDERSTORM WATCH UNTIL 700 PM CDT... AT 305 PM CDT...THUNDERSTORMS WERE APPROACHING THE WESTERN PART OF CLAYTON AND DELAWARE COUNTIES IN NORTHEAST IOWA. THE LEADING EDGE OF THE STORMS WAS LOCATED 50 MILES WEST AND NORTHWEST OF DUBUQUE JUST ENTERING THE NORTHWEST PART OF CLAYTON COUNTY. THESE STORMS WILL BE MOVING THROUGH CLAYTON AND DELAWARE COUNTIES DURING THE NEXT HOUR. WIND IN EXCESS OF 50 MILES AN HOUR WERE REPORTED AS THE STORMS MOVED THROUGH BLACKHAWK COUNTY. PERSONS IN CLAYTON AND DELAWARE COUNTIES IN NORTHEAST IOWA SHOULD BE ALERT TO THESE STORMS AND IF THREATENING WEATHER APPROACHES...TAKE COVER IMMEDIATELY. KOWALSKI
Special weather statement, Apr 26, 4:06 PM CDT, 3 hours 42 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DUBUQUE IA 405 PM CDT WED APR 26 1989 ...TORNADO WATCH UNTIL 1100 AM CDT... AT 400 PM CDT STRONG THUNDERSTORMS WERE MOVING THROUGH DELAWARE COUNTY IN NORTHEAST IOWA. THE MORE INTENSE STORM WAS LOCATED JUST SOUTHWEST OF DELAWARE COUNTY...JUST WEST OF THE CITY OF ROBINSON 45 MILES SOUTHWEST OF DUBUQUE. THE STORMS WERE MOVING EAST AT 30 MILES AN HOUR AND WILL PRODUCE WIND IN EXCESS OF 50 MILE S AN HOUR WITH HAIL POSSIBLE. IN THREATENING WEATHER IS SIGHTED...TAKE COVER IMMEIATELY. KOWALSKI
Special weather statement, Apr 26, 4:16 PM CDT, 3 hours 32 minutes before
NATIONAL WEATHER SERVICE MOLINE IL 412 PM CDT WED APR 26 1989 RADAR SHOWS A WIDE BAND OF SHOWERS AND THUNDERSTORMS MOVING INTO NORTHEASTERN IOWA AND APPROACHING A DUBUQUE-CEDAR RAPIDS LINE. STRONG THUNDERSTORMS WERE IN THE LEADING EDGE OF THE BAND AND WERE PRODUCING STRONG GUSTY WINDS...HEAVY RAIN AND HAIL. WIND GUSTS OF 50 TO 70 MPH WERE REPORTED NORTHWEST OF CEDAR RAPIDS AROUND 4 PM CDT. MOVEMENT OF THE STORMS WAS TO THE SOUTHEAST ABOUT 40 MPH. WIGGINS
Special weather statement, Apr 26, 7:43 PM CDT, 5 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DUBUQUE IA 743 PM CDT WED APR 26 1989 ...TORNADO WATCH UNTIL 1100 AM CDT... AT 740 PM CDT WEATHER RADAR INDICATED NO PRECIP[ITATION IN THE TRI-STATE. A LARGE AREA OF SHOWERS AND STRONG THUNDERSTORMS CONTINUED OVER PARTS OF CENTRAL AND SOUTHEAST IOWA AND PARTS OF NORTHWEST ILLINOIS FROM JUST WEST OF DES MOINES TO SOUTHEAST OF MOLINE ILLINOIS. ALL PRECIPITATION WAS MOVING SOUTHEAST AT 25 MPH. REMEMBER A TORNADO WATCH IS STILL IN EFFECT FOR ALL OF THE TR-STATE UNTIL 11 PM CDT. IF THREATHING WEATHER SHOULD APPROACH YOUR LOCATION SEEK INDOOR...UNDER GROUND SHELTER UNTIL IT PASSES. PxLEASE MONITOR YOUR LOCAL RADIO AND TELEVISION STATIONS OR NATIONAL WEATHER SERVICE RADIO STATIONS NEAREST YOU FOR FUTHER UPDATES ON THIS SEVERE WEATHER EVENT. COUCH
Special weather statement, Apr 26, 7:46 PM CDT, 2 minutes before
SPECIAL WEATHER STATEMENT...CORRECTION...
NATIONAL WEATHER SERVICE DUBUQUE IA
746 PM CDT WED APR 26 1989
...TORNADO WATCH UNTIL 1100 PM CDT...
AT 740 PM CDT WEATHER RADAR INDICATED NO PRECIP[ITATION IN THE
TRI-STATE. A LARGE AREA OF SHOWERS AND STRONG THUNDERSTORMS
CONTINUED OVER PARTS OF CENTRAL AND SOUTHEAST IOWA AND PARTS
OF NORTHWEST ILLINOIS FROM JUST WEST OF DES MOINES TO SOUTHEAST
OF MOLINE ILLINOIS.
ALL PRECIPITATION WAS MOVING SOUTHEAST AT 25 MPH.
REMEMBER A TORNADO WATCH IS STILL IN EFFECT FOR ALL OF THE TR-STATE
UNTIL 11 PM CDT. IF THREATHING WEATHER SHOULD APPROACH YOUR LOCATION
SEEK INDOOR...UNDER GROUND SHELTER UNTIL IT PASSES.
PLEASE MONITOR YOUR LOCAL RADIO AN{D TELEVISION STATIONS OR NATIONAL
WEATHER SERVICE RADIO STATIONS NEAREST YOU FOR FUTHER UPDATES ON THIS
SEVERE WEATHER EVENT.
COUCHThe office that day
Everything else NWS Quad Cities, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 26, 7:23 PM CDT | Severe Thunderstorm Warning | DVN | Henry, Lee | 22 min |
Nearby
Severe Thunderstorm Warnings in Iowa, 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.