Alert archive / Iowa / Severe Thunderstorm Warnings in 1989
Severe Thunderstorm Warning 112, NWS Des Moines, IA
NWS Des Moines, IA issued this severe thunderstorm warning at Aug 4, 1989, 9:25 PM CDT for Fayette County, Iowa. It was in force for 50 min. 1 report 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
- Aug 4, 1989, 9:25 PM CDT (02:25 UTC)
- Expired
- Aug 4, 1989, 10:15 PM CDT
- In force
- 50 min
- Issued by
- NWS Des Moines, IA
- Area
- Whole counties
County Fayette 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 |
|---|---|---|---|
| Aug 4, 9:50 PM CDT | Thunderstorm Wind 50 | Fayette, 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
Minneapolis, MN (KSTC), launched 00:00Z, 2.4 hours before the alert went out and 262 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
- 4 J/kg
- Mixed-layer CIN
- -212 J/kg
- Mixed-layer LCL
- 3541 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 1 m²/s²
- 0-3 km storm-relative helicity
- 34 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
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, Aug 4, 7:09 PM CDT, 2 hours 16 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 710 PM CDT FRI AUG 4 1989 ...A SEVERE THUNDERSTORM WATCH IN EFFECT FOR NORTH CENTRAL... NORTHEAST AND EAST CENTRAL IOWA UNTIL 1100 PM TONIGHT... AT 700 PM...AN ISOLATED INTENSE THUNDERSTORM CONTINUED OVER NORTHEAST IOWA...APPROACHING THE DUBUQUE AREA. LARGE HAIL...UP TO ONE INCH IN DIAMETER...STRONG WINDS...50 TO 60 MILES AN HOUR...AND EXTREME RAINS HAVE BEEN REPORTED WITH THIS STORM. THE STORM WAS MOVING EAST SOUTHEAST AT 30 MILES AN HOUR AND WILL PASS THROUGH DUBUQUE BY 8 PM. THIS STORM IS DANGEROUS AND PRECAUTIONS SHOULD BE TAKEN NOW. KS
Special weather statement, Aug 4, 7:42 PM CDT, 1 hour 43 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 740 PM CDT FRI AUG 4 1989 ...A SEVERE THUNDERSTORM WATCH IN EFFECT FOR NORTH CENTRAL... NORTHEAST AND EAST CENTRAL IOWA UNTIL 1100 PM TONIGHT... AT 726 PM...AN ISOLATED STRONG THUNDERSTORM WAS OVER NORTHEAST IOWA...IN THE DUBUQUE AREA. THE STORM WAS BEGINNING TO WEAKEN... HOWEVER...SOME HAIL...STRONG WINDS AND EXTREME RAINS ARE STILL POSSIBLE. ALSO...SHOWERS AND ISOLATED THUNDERSTORMS WERE NOW ALONG THE IOWA/MINNESOTA BORDER...FROM NORTH OF MASON CITY TO THE NORTHEAST CORNER OF THE STATE. THE SHOWERS AND STORMS WERE MOVING EAST SOUTHEAST AT 30 MILES AN HOUR. KS
Local storm report, Aug 4, 8:11 PM CDT, 1 hour 14 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE LACROSSE WI
8 05 PM CDT FRI AUG 5 1989
AT 557 PM...1 INCH HAIL...TREES REPORTED DOWN AT FOUNTAIN CITY
IN BUFFALO COUNTY WI
AT 615 PM...DIME SIZE HAIL AT TREMPEALEAU IN TREMPEALEAU CO WI
AT 630 AM...DIME SIZE HAIL AT POST OFFICE IN DOWNTOWN LACROSSE
IN LACROSSE CO WI
AT 635 PM...2 1/4 INCH HAIL IN SOUTH LACROSSE THAT BROKE WINDOWS
IN LACROSSE CO WI
AT 700 PM...60 MILE AN HZOUR WINDS 5E VIROQUA IN VERNON CO WI
AT 720 PM...POWER FAILURE AT NWS OFFICE LACROSSE WI
AT 705 PM...11/2 INCH HAIL AT WESTBY WI IN VERNON CO
RELAYED BY NWS DSM
BRUCE/SCOTTSpecial weather statement, Aug 4, 8:28 PM CDT, 57 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 820 PM CDT FRI AUG 4 1989 ...A SEVERE THUNDERSTORM WATCH IN EFFECT FOR NORTH CENTRAL... NORTHEAST AND EAST CENTRAL IOWA UNTIL 1100 PM TONIGHT... AT 805 PM...SCATTERED SHOWERS AND ISOLATED INTENSE THUNDERSTORMS CONTINUE TO MOVE INTO THE FAR NORTHEAST COUNTIES OF IOWA FROM MINNESOTA. THE INTENSE STORMS WERE IN HOWARD AND NORTHERN WINNESHIEK COUNTIES...45 TO 80 MILES EAST OF MASON CITY. LARGE HAIL...STRONG WINDS AND EXTREME RAINS ARE POSSIBLE WITH THESE STORMS. THE STRONG STORMS THAT WERE IN THE DUBUQUE AREA HAD MOVED INTO ILLINOIS. THE SHOWERS AND STORMS WERE MOVING EAST SOUTHEAST AT 30 MILES AN HOUR. KSy
Special weather statement, Aug 4, 8:40 PM CDT, 45 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 840 PM CDT FRI AUG 4 1989 ...SEVERE THUNDERSTORM WATCH IN EFFECT FOR NORTHEAST AND EAST CENTRAL IOWA UNTIL 11 PM TONIGHT... ...SEVERE THUNDERSTORM WATCH FOR WESTERN IOWA UNTIL 2 AM SATURDAY MORNING... AT 828 PM...SCATTERED SHOWERS AND ISOLATED INTENSE THUNDERSTORMS CONTINUED OVER THE FAR NORTHEAST COUNTIES OF IOWA. THE INTENSE STORMS WERE IN SOUTHERN HOWARD...NORTHERN CHICKASAW AND WESTERN WINNESHIEK COUNTIES...40 TO 55 MILES NORTH THROUGH NORTHEAST OF WATERLOO. LARGE HAIL...STRONG WINDS AND EXTREME RAINS ARE POSSIBLE WITH THESE STORMS. THE SHOWERS AND STORMS WERE MOVING EAST SOUTHEAST AT 30 MILES AN HOUR. KS
Special weather statement, Aug 4, 9:06 PM CDT, 19 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 905 PM CDT FRI AUG 4 1989 ...SEVERE THUNDERSTORM WATCH IN EFFECT FOR NORTHEAST AND EAST CENTRAL IOWA UNTIL 11 PM TONIGHT... ...SEVERE THUNDERSTORM WATCH FOR WESTERN IOWA UNTIL 2 AM SATURDAY MORNING... AT 858 PM...SCATTERED SHOWERS AND ISOLATED INTENSE THUNDERSTORMS CONTINUED OVER THE FAR NORTHEAST COUNTIES OF IOWA. THE INTENSE STORMS WERE 45 MILES NORTHEAST OF WATERLOO...APPROACHING THE TOWN OF CALMAR. LARGE HAIL...STRONG WINDS AND EXTREME RAINS ARE POSSIBLE WITH THESE STORMS. THESE STORMS ARE ALSO CAPABLE OF PRODUCING TORNADOES. THE SHOWERS AND STORMS WERE MOVING EAST SOUTHEAST AT 30 MILES AN HOUR. KS
The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 4, 8:27 PM CDT | Severe Thunderstorm Warning | DMX | Winneshiek | 48 min |
| Aug 4, 8:39 PM CDT | Severe Thunderstorm Warning | DMX | Chickasaw | 51 min |
| Aug 4, 8:50 PM CDT | Tornado Warning | DMX | Chickasaw | 25 min |
| Aug 4, 10:06 PM CDT | Severe Thunderstorm Warning | DMX | Bremer | 54 min |
| Aug 4, 11:41 PM CDT | Severe Thunderstorm Warning | DMX | Buchanan | 34 min |
| Aug 5, 7:04 AM CDT | Severe Thunderstorm Warning | DMX | Humboldt | 41 min |
| Aug 5, 8:00 AM CDT | Severe Thunderstorm Warning | DMX | Crawford | 45 min |
| Aug 5, 8:09 AM CDT | Severe Thunderstorm Warning | DMX | Carroll | 51 min |
| Aug 5, 8:21 AM CDT | Severe Thunderstorm Warning | DMX | Greene, Guthrie | 39 min |
| Aug 5, 8:41 AM CDT | Severe Thunderstorm Warning | DMX | Boone, Dallas | 44 min |
| Aug 5, 8:55 AM CDT | Severe Thunderstorm Warning | DMX | Polk, Story | 50 min |
| Aug 5, 8:55 AM CDT | Severe Thunderstorm Warning | DMX | Warren | 50 min |
| Aug 5, 9:20 AM CDT | Severe Thunderstorm Warning | DMX | Jasper, Marion | 40 min |
| Aug 5, 9:20 AM CDT | Severe Thunderstorm Warning | DMX | Marshall | 40 min |
| Aug 5, 9:54 AM CDT | Severe Thunderstorm Warning | DMX | Poweshiek, Tama | 54 min |
| Aug 5, 9:54 AM CDT | Severe Thunderstorm Warning | DMX | Jasper, Marshall | 33 min |
| Aug 5, 10:22 AM CDT | Severe Thunderstorm Warning | DMX | Benton, Iowa | 68 min |
| Aug 5, 10:50 AM CDT | Severe Thunderstorm Warning | DMX | Keokuk | 55 min |
| Aug 5, 10:50 AM CDT | Severe Thunderstorm Warning | DMX | Johnson, Linn | 43 min |
| Aug 5, 10:50 AM CDT | Severe Thunderstorm Warning | DMX | Washington | 43 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.