Alert archive / Iowa / Severe Thunderstorm Warnings in 1994
Severe Thunderstorm Warning 114, NWS Des Moines, IA
NWS Des Moines, IA issued this severe thunderstorm warning at Jun 19, 1994, 4:32 PM CDT for Story County, Iowa. It was in force for 28 min.
The area
The counties it named.
The facts
- Issued
- Jun 19, 1994, 4:32 PM CDT (21:32 UTC)
- Expired
- Jun 19, 1994, 5:00 PM CDT
- In force
- 28 min
- Issued by
- NWS Des Moines, IA
- Area
- Whole counties
County Story County, IA
The nearest sounding before it
Minneapolis, MN (KSTC), launched 12:00Z, 9.5 hours before the alert went out and 313 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
- 741 J/kg
- Mixed-layer CIN
- -153 J/kg
- Mixed-layer LCL
- 734 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 121 m²/s²
- 0-3 km storm-relative helicity
- 130 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, Jun 19, 2:32 PM CDT, 2 hours before
IAZ071-057-047-045-070-044-059-046-058-061-072-023-060-048-073- 035-192030- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 229 PM CDT SUN JUN 19 1994 ...THUNDERSTORMS WERE EXPLODING OVER WEST CENTRAL IOWA... AT 225 PM CDT DOPPLER RADAR INDICATED STRONG THUNDERSTORMS WITH VERY HEAVY RAIN...PEA SIZED HAIL AND DEADLY LIGHTNING. SOME GUSTY WINDS UP TO 40 MILES AN HOUR ARE ALSO POSSIBLE WITH THESE THUNDERSTORMS. THE STORMS WERE LOCATED FROM NEAR ATLANTIC TO GUTHRIE CENTER...WEST TO NEAR EARLHAM. THE STORMS WERE MOVING TO THE NORTHEAST AND SHOULD ENTER THE DES MOINES METRO BY 3 PM CDT. THESE STORMS HAVE THE POTENTIAL TO PRODUCE TORRENTIAL RAIN. PONDING OF WATER WILL OCCUR QUICKLY IN POOR DRAINAGE AND LOW-LYING AREAS. BELLES
Special weather statement, Jun 19, 2:42 PM CDT, 1 hour 50 minutes before
IAZ071-057-047-045-070-044-059-046-058-061-072-023-060-048-073- 035-192030- SPECIAL WEATHER STATEMENT...CORRECT DIRECTION 4TH LINE NATIONAL WEATHER SERVICE DES MOINES IA 229 PM CDT SUN JUN 19 1994 ...THUNDERSTORMS WERE EXPLODING OVER WEST CENTRAL IOWA... AT 225 PM CDT DOPPLER RADAR INDICATED STRONG THUNDERSTORMS WITH VERY HEAVY RAIN...PEA SIZED HAIL AND DEADLY LIGHTNING. SOME GUSTY WINDS UP TO 40 MILES AN HOUR ARE ALSO POSSIBLE WITH THESE THUNDERSTORMS. THE STORMS WERE LOCATED FROM NEAR ATLANTIC TO GUTHRIE CENTER...EAST TO NEAR EARLHAM. THE STORMS WERE MOVING TO THE NORTHEAST AND SHOULD ENTER THE DES MOINES METRO BY 3 PM CDT. THESE STORMS HAVE THE POTENTIAL TO PRODUCE TORRENTIAL RAIN. PONDING OF WATER WILL OCCUR QUICKLY IN POOR DRAINAGE AND LOW-LYING AREAS. BELLES
Special weather statement, Jun 19, 2:50 PM CDT, 1 hour 42 minutes before
IAZALL-192100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 250 PM CDT SUN JUN 19 1994 ...THUNDERSTORMS STALLING OVER CENTRAL IOWA COUNTIES... AT 235 PM CDT DOPPLER RADAR INDICATED STRONG THUNDERSTORMS WITH VERY HEAVY RAIN AFFECTING TAMA...GRUNDY...AND MARSHALL COUNTIES. THE MOST INTENSE RAINS STALLED OVER NORTHERN MARSHALL COUNTY JUST NORTH OF MARSHALLTOWN. THE STORM TOTAL PRECIPITATION HAS REACHED AMOUNTS OF 1 TO 3 INCHES HOWEVER DURING THE PAST TEN MINUTES THE STORMS WERE WEAKENING. BE AWARE OF PONDING WATER AND LOCALIZED FLOODING IN DITCHES AND LOW LYING AREAS. KAUFMAN
Special weather statement, Jun 19, 2:51 PM CDT, 1 hour 41 minutes before
IAZALL-192100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 250 PM CDT SUN JUN 19 1994 ...THUNDERSTORMS STALLING OVER CENTRAL IOWA COUNTIES... AT 235 PM CDT DOPPLER RADAR INDICATED STRONG THUNDERSTORMS WITH VERY HEAVY RAIN AFFECTING TAMA...GRUNDY...AND MARSHALL COUNTIES. THE MOST INTENSE RAINS STALLED OVER NORTHERN MARSHALL COUNTY JUST NORTH OF MARSHALLTOWN. THE STORM TOTAL PRECIPITATION HAS REACHED AMOUNTS OF 1 TO 3 INCHE S HOWEVER DURING THE PAST TEN MINUTES THE STORMS WERE WEAKENING. BE AWARE OF PONDING WATER AND LOCALIZED FLOODING IN DITCHES AND LOW LYING AREAS. KAUFMAN
Special weather statement, Jun 19, 4:25 PM CDT, 7 minutes before
IAZ006-007-008-009-010-011-016-017-018-019-026-027-028-029-038- 039-040-192230- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WATERLOO IA 425 PM CDT SUN JUN 19 1994 ...THUNDERSTORMS CONTINUED TO RUMBLE IN NORTHEAST IOWA... AT 425 PM SCATTERED STORMS WERE LOCATED FROM WATERLOO AND LAPORTE CITY NORTH TO NEAR CHARLES CITY (30 MILES NORTH OF WATERLOO) AND EXTENDING SOUTHEAST TO FAYETTE (30 MILES SOUTH OF DECORAH). OTHER STORMS WERE DEVELOPING ALONG AND WEST OF I-35 AS WELL. THROUGH 6 PM SCATTERED STORMS WILL CONTINUE TO PRODUCE ISOLATED LOCALLY HEAVY RAINS AND DEADLY LIGHTNING...ESPECIALLY ALONG AND EAST OF HIGHWAY 218 AND SOUTH OF HIGHWAY 18. SCATTERED STORMS WILL TRAVEL AREAS WEST OF MASON CITY AND HAMPTON AS WELL. AN URBAN AND SMALL STREAM FLOOD ADVISORY REMAINS IN EFFECT FOR FLOYD AND BUTLER COUNTIES UNTIL 6 PM. DO NOT CROSS ROADWAYS THAT ARE FLOODED. COLLAR
Special weather statement, Jun 19, 4:27 PM CDT, 5 minutes before
IAZ006-007-008-009-010-011-016-017-018-019-026-027-028-029-038- 039-040-192230- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WATERLOO IA 425 PM CDT SUN JUN 19 1994 ...THUNDERSTORMS CONTINUED TO RUMBLE IN NORTHEAST IOWA... AT 425 PM SCATTERED STORMS WERE LOCATED FROM WATERLOO AND LAPORTE CITY NORTH TO NEAR CHARLES CITY (30 MILES NORTH OF WATERLOO) AND EXTENDING SOUTHEAST TO FAYETTE (30 MILES SOUTH OF DECORAH). OTHER STORMS WERE DEVELOPING ALONG AND WEST OF I-35 AS WELL. THROUGH 6 PM SCATTERED STORMS WILL CONTINUE TO PRODUCE ISOLATED LOCALLY HEAVY RAINS AND DEADLY LIGHTNING...ESPECIALLY ALONG AND EAST OF HIGHWAY 218 AND SOUTH OF HIGHWAY 18. SCATTERED STORMS WILL TRAVEL AREAS WEST OF MASON CITY AND HAMPTON AS WELL. AN URBAN AND SMALL STREAM FLOOD ADVISORY REMAINS IN EFFECT FOR FLOYD AND BUTLER COUNTIES UNTIL 6 PM. DO NOT CROSS ROADWAYS THAT ARE FLOODED. COLLAR
The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 18, 7:12 PM CDT | Tornado Warning | DMX | Humboldt | 18 min |
| Jun 19, 2:51 PM CDT | Severe Thunderstorm Warning | DMX | Grundy | 39 min |
| Jun 19, 4:48 PM CDT | Tornado Warning | DMX | Hardin | 27 min |
| Jun 19, 5:44 PM CDT | Severe Thunderstorm Warning | DMX | Linn | 31 min |
| Jun 19, 6:09 PM CDT | Severe Thunderstorm Warning | DMX | Benton | 36 min |
Nearby
Severe Thunderstorm Warnings in Iowa, 1994Every severe thunderstorm warning in 1994
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.