Alert archive / Iowa / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 188, NWS Des Moines, IA
NWS Des Moines, IA issued this severe thunderstorm warning at Sep 7, 1990, 5:01 PM CDT for Buena Vista County, Clay County, Iowa. It was in force for 44 min.
The area
The counties it named.
The facts
- Issued
- Sep 7, 1990, 5:01 PM CDT (22:01 UTC)
- Expired
- Sep 7, 1990, 5:45 PM CDT
- In force
- 44 min
- Issued by
- NWS Des Moines, IA
- Area
- Whole counties
Counties Buena Vista County, IA, Clay County, IA
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
Omaha, NE (KOAX), launched 12:00Z, 10.0 hours before the alert went out and 203 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
- 3615 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- -28 m²/s²
- 0-3 km storm-relative helicity
- 1 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, Sep 7, 3:09 PM CDT, 1 hour 52 minutes before
IAZ002-003-007-072100- SPECIAL WEATHER STATEMENT AND WEATHER UPDATE FOR NORTHEAST IOWA NATIONAL WEATHER SERVICE WATERLOO IA 305 PM CDT FRI SEP 7 1990 ...TORNADO WATCH FOR NORTH CENTRAL IOWA UNTIL 800 PM CDT... A 305 PM CDT SCATTERED SHOWERS HAD DEVELOPED OVER PARTS OF NORTHEAST IOWA...MAINLY NORTH OF DECORAH AND ALONG THE IOWA/MINNESOTA BORDER NORTH OF MASON CITY. THE SHOWERS WERE MOVING SOUTHEAST AT 25 MILES AN HOUR. THE REST OF NORTHEAST IOWA HAD MOSTLY SUNNY SKIES. THE TEMPERATURES WERE IN THE UPPER 70S TO LOWER 80S. THE WINDS WERE EAST TO SOUTHEAST AT 5 TO 15 MILES AN HOUR. AT 400 PM CDT THE SKY OVER NORTHEAST IOWA SHOULD BE PARTLY CLOUDY WITH SHOWERS AND THUNDERSTORMS POSSIBLE ABOUT ANYWHERE. TEMPERATURES SHOULD REMAIN STEADY WITH VARIABLE WINDS 5 TO 15 MILES AN HOUR. NO SEVERE WEATHER HAS BEEN REPORTED IN THE TORNADO WATCH AREA. PEOPLE IN AND NEAR THE WATCH AREA SHOULD REMAIN ALERT FOR RAPID CHANGES IN THE WEATHER CONDITIONS. BE PREPARED TO TAKE PROTECTIVE ACTION IF SEVERE WEATHER STARTS TO OCCUR.
Special weather statement, Sep 7, 3:18 PM CDT, 1 hour 43 minutes before
IAZALL-072120- SPECIAL WEATHER STATEMENT AND WEATHER UPDATE FOR IOWA NATIONAL WEATHER SERVICE DES MOINES IA 315 PM CDT FRI SEP 7 1990 ...TORNADO WATCH IN EFFECT FOR NORTHWEST AND NORTH CENTRAL IOWA UNTIL 8 PM CDT THIS FRIDAY EVENING... AT 310 PM...WIDELY SCATTERED LIGHT SHOWERS WERE OCCURRING OVER SOUTHWEST AND SOUTH CENTRAL IOWA. MOST OF THE SHOWERS WERE ALONG AND SOUTH OF A COUNCIL BLUFFS TO DES MOINES LINE. MOST OF THE SHOWERS STRETCHED FROM REDFIELD...25 MILES WEST OF DES MOINES...TO THE ATLANTIC AREA...65 MILES SOUTHWEST OF DES MOINES...AND NEAR AFTON...40 MILES SOUTHWEST OF DES MOINES. THESE SHOWERS WERE MOVING SOUTHEAST AT 25 MILES AN HOUR. ALSO...INTENSE THUNDERSTORMS WERE APPROACHING THE IOWA BORDER NORTH OF THE IOWA GREAT LAKES...80 MILES NORTHEAST OF SIOUX CITY. THESE STORMS WERE MOVING SOUTHEAST AT 25 MILES AN HOUR. THE ONE TO TWO HOUR OUTLOOK IS FOR THE STORMS APPROACHING THE NORTHWEST IOWA BORDER TO MOVE INTO THE IOWA GREAT LAKES AREA AND ADJACENT AREAS OF NORTH CENTRAL IOWA. ALSO...THE SHOWERS OVER SOUTHERN IOWA WILL CONTINUE TO BUILD...PRODUCING OCCASIONAL THUNDERSHOWERS. DM
Special weather statement, Sep 7, 3:45 PM CDT, 1 hour 16 minutes before
IAZALL-072130- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 342 PM CDT FRI SEP 7 1990 ...TORNADO WATCH IN EFFECT FOR NORTHWEST AND NORTH CENTRAL IOWA UNTIL 8 PM CDT THIS FRIDAY EVENING... AT 335 PM...SCATTERED SHOWERS AND ISOLATED STRONG THUNDERSTORMS WERE MOVING INTO THE NORTHERN TIER OF IOWAS COUNTIES. THE STRONGEST STORMS WERE STILL LOCATED IN SOUTHERN MINNESOTA...HOWEVER STRONG STORMS WERE APPROACHING THE SPIRIT LAKE AREA SOME 25 MILES NORTH OF SPENCER. PEOPLE ON SPIRIT LAKE SHOULD BE PREPARED TO MOVE TO A PLACE OF SAFE HARBOR AS THESE STORMS APPROACH. THE SHOWERS AND STORMS OVER NORTHERN IOWA WERE LOCATED NORTH OF A LINE FROM SPIRIT LAKE EAST TO DECORAH. SCATTERED LIGHT SHOWERS WERE OCCURRING FROM SOUTHWEST INTO CENTRAL IOWA. THESE SHOWERS WERE ALONG AND 20 MILES EITHER SIDE OF A LINE FROM 10 SOUTHEAST OF OMAHA/CONCIL BLUFFS EAST TO WINTERSET OR 20 MILES SOUTHWEST OF DES MOINES. THE S4HOWERS AND STORMS WERE MOVING SOUTH SOUTHEAST AT 25 MILES AN HOUR. BARLOW/MILLER
Special weather statement, Sep 7, 4:10 PM CDT, 51 minutes before
IAZ002-003-007-072200- SPECIAL WEATHER STATEMENT AND WEATHER UPDATE FOR NORTHEAST IOWA NATIONAL WEATHER SERVICE WATERLOO IA 405 PM CDT FRI SEP 7 1990 ...TORNADO WATCH FOR NORTH CENTRAL IOWA UNTIL 800 PM CDT... A 405 PM CDT SCATTERED SHOWERS AND THUNDERSTORMS WERE LOCATED ALONG THE IOWA/MINNESOTA BORDER FROM NORTHWEST OF MASON CITY TO EAST OF DECORAH ON THE MISSISSIPPI RIVER. THE SHOWERS AND THUNDERSTORMS WERE MOVING SOUTHEAST AT 25 MILES AN HOUR. ELSEWHERE IN NORTHEAST IOWA THE SKIES WERE PARTLY CLOUDY. THE TEMPERATURES WERE IN THE UPPER 70S AND LOWER 80S. THE WINDS WERE SOUTHEAST AT 5 TO 15 MILES AN HOUR. AT 500 PM CDT THE SKY OVER NORTHEAST IOWA SHOULD BE PARTLY CLOUDY WITH SHOWERS AND THUNDERSTORMS POSSIBLE ABOUT ANYWHERE. TEMPERATURES SHOULD REMAIN STEADY WITH VARIABLE WINDS 5 TO 15 MILES AN HOUR. SOME HALF INCH HAIL HAS BEEN REPORTED IN THE TORNADO WATCH AREA. PEOPLE IN AND NEAR THE WATCH AREA SHOULD REMAIN ALERT FOR RAPID_ CHANGES IN THE WEATHER CONDITIONS. BE PREPARED TO TAKE PROTECTIVE ACTION IF SEVERE WEATHER STARTS TO OCCUR.
Special weather statement, Sep 7, 4:18 PM CDT, 43 minutes before
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</html>Special weather statement, Sep 7, 4:48 PM CDT, 13 minutes before
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<section class="card" role="status" aria-live="polite">
<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
<p id="message1">
The site you requested is temporarily down for maintenance or an unexpected outage.
</p>
<p id="message2">
Please try again in a few minutes.
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</html>The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 7, 3:47 PM CDT | Severe Thunderstorm Warning | DMX | Emmet | 28 min |
| Sep 7, 4:05 PM CDT | Severe Thunderstorm Warning | DMX | Kossuth | 40 min |
| Sep 7, 4:15 PM CDT | Severe Thunderstorm Warning | DMX | Emmet, Palo Alto | 35 min |
| Sep 7, 5:39 PM CDT | Severe Thunderstorm Warning | DMX | Buena Vista | 36 min |
| Sep 7, 6:17 PM CDT | Severe Thunderstorm Warning | DMX | Buena Vista, Calhoun, Pocahontas, Sac | 43 min |
Nearby
Severe Thunderstorm Warnings in Iowa, 1990Every severe thunderstorm warning in 1990
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.