Alert archive / Iowa / Severe Thunderstorm Warnings in 1992
Severe Thunderstorm Warning 46, NWS Des Moines, IA
NWS Des Moines, IA issued this severe thunderstorm warning at Jul 2, 1992, 1:14 AM CDT for Audubon County, Iowa. It was in force for 61 min.
The area
The counties it named.
The facts
- Issued
- Jul 2, 1992, 1:14 AM CDT (06:14 UTC)
- Expired
- Jul 2, 1992, 2:15 AM CDT
- In force
- 61 min
- Issued by
- NWS Des Moines, IA
- Area
- Whole counties
County Audubon County, IA
The nearest sounding before it
Omaha, NE (KOVN), launched 00:00Z, 6.2 hours before the alert went out and 128 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
- 1215 J/kg
- Mixed-layer CIN
- -85 J/kg
- Mixed-layer LCL
- 1615 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 55 m²/s²
- 0-3 km storm-relative helicity
- 145 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 5.6
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KDSM 020614 SVRDSM IAC009-020715- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE DES MOINES IA 114 AM CDT THU JUL 2 1992 THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 215 AM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN WEST CENTRAL IOWA ...SOUTHERN AUDUBON COUNTY AT 110 AM CDT...DES MOINES RADAR DETECTED A SEVERE THUNDERSTORM 50 MILES NORTHEAST OF COUNCIL BLUFFS...NEAR THE TOWN OF ELK HORN. THE THUNDERSTORM WAS MOVING NORTHEAST AT 35 MPH. PEOPLE IN THE TOWNS OF BRAYTON...EXIRA...AND HAMLIN ARE IN THE DIRECT PATH OF THIS STORM...WHICH SHOULD MOVE THROUGH THESE COMMUNITIES BY 2 AM CDT THIS THURSDAY MORNING. SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY RAINS FXLOOD ROADS QUICKLY SO DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. SMITH
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, Jul 1, 9:34 PM CDT, 3 hours 40 minutes before
IAZALL-020335- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 934 PM CDT WED JUL 1 1992 AT 925 PM CDT...SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS CONTINUED OVER NORTHWEST AND NORTH CENTRAL IOWA. THE STORMS AND SHOWERS WERE LOCATED GENERALLY NORTHWEST OF A LINE EXTENDING FROM STORM LAKE...TO THE IOWA/MINNESOTA BORDER 35 MILES NORTHWEST OF MASON CITY. SOME OF THE STRONGER STORMS IN THIS AREA MAY PRODUCE BRIEF HEAVY RAIN...GUSTY WINDS OF 40 TO 50 MILES AN HOUR...AND FREQUENT DANGEROUS LIGHTNING. THE SHOWERS AND STORMS WERE MOVING EAST AT 25 TO 30 MILES AN HOUR. JAK
Special weather statement, Jul 1, 10:42 PM CDT, 2 hours 32 minutes before
IAZALL-020440- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 1042 PM CDT WED JUL 1 1992 ...A TORNADO WATCH IS IN EFFECT FOR PARTS OF WEST CENTRAL AND SOUTHWEST IOWA UNTIL 4 AM THURSDAY MORNING... AT 1030 PM CDT...ISOLATED THUNDERSTORMS AND SCATTERED SHOWERS WERE OCCURRING OVER THE NORTHWEST THIRD OF IOWA. THE STORMS AND SHOWERS WERE LOCATED NORTHWEST OF A LINE EXTENDING FROM THE IOWA/NEBRASKA BORDER 20 MILES NORTH OF OMAHA/COUNCIL BLUFFS...THROUGH STORM LAKE...TO THE IOWA/MINNESOTA BORDER 45 MILES NORTHWEST OF MASON CITY. SOME OF THE STRONGER THUNDERSTORMS IN THIS AREA MAY PRODUCE BRIEF VERY HEAVY RAIN...GUSTY WINDS OF 40 TO 50 MILES AN HOUR AND DEADLY LIGHTNING. THE SHOWERS AND STORMS WERE MOVING EAST AT 20 TO 25 MILES AN HOUR. JAK
Special weather statement, Jul 1, 11:13 PM CDT, 2 hours 1 minute before
IAZALL-020610- SPECIAL WEATHER STATEMENT AND WEATHER UPDATE FOR IOWA NATIONAL WEATHER SERVICE DES MOINES IA 1113 PM CDT WED JUL 1 1992 ...A TORNADO WATCH IS IN EFFECT FOR PARTS OF SOUTHWEST AND WEST CENTRAL IOWA UNTIL 4 AM THURSDAY MORNING... SHOWERS AND THUNDERSTORMS WERE LOCATED OVER THE NORTHWEST THIRD OF IOWA AT 11 PM...NORTHWEST OF A LINE FROM COUNCIL BLUFFS...THROUGH STORM LAKE TO THE MINNESOTA BORDER NORTH OF MASON CITY. SHOWERS AND WIDELY SCATTERED STRONG THUNDERSTORMS WILL CONTINUE MOVING ACROSS THE NORTHWEST THIRD OF IOWA THROUGH 1 AM. SOME OF THESE STORMS MAY PRODUCE HEAVY RAIN AND GUSTY WINDS. OTHERWISE SKIES WILL BE PARTLY TO MOSTLY CLOUDY WITH TEMPERATURES IN THE MI>DDLE 60S TO AROUND 80 DEGREES. JAK
Special weather statement, Jul 1, 11:39 PM CDT, 1 hour 35 minutes before
IAZALL-020530- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 1140 PM CDT WED JUL 1 1992 ...A TORNADO WATCH IS IN EFFECT FOR PARTS OF WEST CENTRAL AND SOUTHWEST IOWA UNTIL 4 AM THURSDAY MORNING... AT 1128 PM CDT...ISOLATED VERY STRONG THUNDERSTORMS...WERE LOCATED OVER THE NORTHWEST ONE-THIRD OF IOWA. THE STORMS AND SHOWERS WERE LOCATED NORTHWEST OF A LINE EXTENDING FROM THE IOWA/NEBRASKA BORDER JUST NORTH OF OMAHA/COUNCIL BLUFFS...TO 80 MILES NORTHEAST OF SIOUX CITY...NEAR LAURENS...TO THE IOWA/MINNESOTA BORDER 40 MILES NORTHWEST OF MASON CITY. THE VERY STRONG STORMS...ALONG WITH VERY HEAVY RAINFALL...COULD ALSO PRODUCE BRIEF STRONG GUSTY WIND...HAIL...AND FREQUENT DANGEROUS LIGHTNING. THE SHOWERS AND STORMS WERE MOVING EAST AT 25 TO 30 MILES AN HOUR. JAK/WPM
Special weather statement, Jul 2, 12:35 AM CDT, 39 minutes before
IAZALL-020640- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 1235 AM CDT THU JUL 2 1992 ...A TORNADO WATCH IS IN EFFECT FOR PARTS OF WEST CENTRAL AND SOUTHWEST IOWA UNTIL 4 AM... ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR PARTS OF NORTHERN IOWA UNTIL 6 AM... AT 1225 AM CDT...ISOLATED VERY STRONG THUNDERSTORMS AND SCATTERED SHOWERS WERE OCCURRING OVER THE NORTHWEST THIRD OF IOWA. THE STRONGEST STORMS WERE LOCATED 20 MILES NORTHEAST OF OMAHA/COUNCIL BLUFFS NEAR LOGAN...AND 5 MILES SOUTHEAST OF STORM LAKE. THESE STORMS WERE PRODUCING VERY HEAVY RAIN...GUSTY WINDS...DEADLY LIGHTNING AND POSSIBLY SOME HAIL. THE STORMS WERE PART OF AN AREA OF SHOWERS AND STORMS LOCATED WEST OF A LINE FROM 25 MILES SOUTHEAST OF OMAHA/COUNCIL BLUFFS NEAR SIDNEY... TO THE IOWA/MINNESOTA BORDER 45 MILES NORTHWEST OF MASON CITY. . THE STORMS AND SHOWERS WERE MOVING NORTHEAST AT AROUND 25 MILES AN HOUR. RAR/JAK
Special weather statement, Jul 2, 12:42 AM CDT, 32 minutes before
IAZ002-003-007-020640-
SPECIAL WEATHER STATEMENT AND WEATHER UPDATE FOR NORTHEAST IOWA
NATIONAL WEATHER SERVICE WATERLOO IA
1240 AM CDT THU JUL 2 1992
...SEVERE THUNDERSTORM WATCH UNTIL 6 AM CDT...
AT 1235 AM WEATHER RADAR IN WATERLOO WAS SHOWING SOME SHOWERS
DEVELOPING NEAR MASON CITY. STRONG THUNDERSTORMS WERE IN THE WESTERN
HALF OF IOWA EXTENDING FROM AREAS WEST OF FORT DODGE INTO SOUTHWEST
IOWA.
THROUGH 130 AM SHOWERS AND THUNDERSTORMS WILL BE APPROACHING THE I-35
VICINITY FROM CENTRAL IOWA. CLOUDS WILL BE INCREASING THROUGHOUT THE
REST OF NORTHEAST IOWA. AREAS AROUND WATERLOO AND CHARLES CITY SHOULD
REMAIN FREE OF THUNDERSTORMS UNTIL SOMETIME AFTER 3 AM.
PEOPLE IN THIS WATCH AREA SHOULD STAY ALERT FOR THE DEVELOPMENT OF
THUNDERSTORMS. LATER STATEMENTS WILL BE UPDATING THIS SITUATION AS THE
MORNING WEARS ON.
COLLARThe office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 1, 11:35 PM CDT | Severe Thunderstorm Warning | DMX | Crawford | 55 min |
| Jul 2, 2:16 AM CDT | Severe Thunderstorm Warning | DMX | Adair, Cass | 44 min |
| Jul 2, 9:11 AM CDT | Severe Thunderstorm Warning | DMX | Polk, Story | 34 min |
| Jul 2, 9:50 AM CDT | Tornado Warning | DMX | Marshall | 25 min |
| Jul 2, 9:50 AM CDT | Tornado Warning | DMX | Story | 20 min |
| Jul 2, 9:56 AM CDT | Severe Thunderstorm Warning | DMX | Jasper | 34 min |
| Jul 2, 10:09 AM CDT | Severe Thunderstorm Warning | DMX | Grundy | 51 min |
| Jul 2, 10:21 AM CDT | Severe Thunderstorm Warning | DMX | Poweshiek, Tama | 24 min |
| Jul 2, 10:43 AM CDT | Severe Thunderstorm Warning | DMX | Benton | 42 min |
| Jul 2, 10:44 AM CDT | Severe Thunderstorm Warning | DMX | Black Hawk | 46 min |
| Jul 2, 10:44 AM CDT | Severe Thunderstorm Warning | DMX | Grundy | 23 min |
| Jul 2, 10:55 AM CDT | Severe Thunderstorm Warning | DMX | Keokuk | 43 min |
| Jul 2, 11:08 AM CDT | Severe Thunderstorm Warning | DMX | Appanoose | 37 min |
| Jul 2, 11:30 AM CDT | Severe Thunderstorm Warning | DMX | Davis, Wapello | 30 min |
| Jul 2, 2:58 PM CDT | Tornado Warning | DMX | Mahaska | 32 min |
| Jul 2, 3:12 PM CDT | Tornado Warning | DMX | Keokuk, Wapello | 21 min |
Nearby
Severe Thunderstorm Warnings in Iowa, 1992Every severe thunderstorm warning in 1992
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.