Alert archive / Iowa / Severe Thunderstorm Warnings in 1993
Severe Thunderstorm Warning 104, NWS Des Moines, IA
NWS Des Moines, IA issued this severe thunderstorm warning at Jun 29, 1993, 8:23 PM CDT for Butler County, Iowa. It was in force for 52 min.
The area
The counties it named.
The facts
- Issued
- Jun 29, 1993, 8:23 PM CDT (01:23 UTC)
- Expired
- Jun 29, 1993, 9:15 PM CDT
- In force
- 52 min
- Issued by
- NWS Des Moines, IA
- Area
- Whole counties
County Butler County, IA
The nearest sounding before it
Minneapolis, MN (KSTC), launched 00:00Z, 1.4 hours before the alert went out and 244 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
- 679 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 177 m²/s²
- 0-3 km storm-relative helicity
- 311 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 29, 7:43 PM CDT, 40 minutes before
IAZALL-300140- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 743 PM CDT TUE JUN 29 1993 ...A TORNADO WATCH IS IN EFFECT FOR MUCH OF THE NORTH HALF OF IOWA UNTIL 11 PM. ...A FLASH FLOOD WATCH IS IN EFFECT FOR NORTHWEST IOWA UNTIL MIDNIGHT... ...A FLASH FLOOD WATCH IS IN EFFECT FOR A SMALL PART OF EXTREME NORTHEAST IOWA TONIGHT... AT 732 PM CDT...INTENSE THUNDERSTORMS CONTINUED FROM NORTHWEST INTO NORTH CENTRAL IOWA. TH STORMS WERE LOCATED IN A 15 TO 20 MILE WIDE BAND EXTENDING FROM 35 MILES SOUTH OF SPENCER NEAR STORM LAKE...TO 10 MILES NORTHEAST OF MASON CITY NEAR MANLY. THESE STORMS CONTINUED TO PRODUCE TORRENTIAL RAINFALL...GUSTY WINDS...HAIL AND FREQUENT LIGHTNING. THE STORMS WERE LOCATED IN AND AREA OF STORMS AND SHOWERS GENERALLY NORTH OF A LINE FROM SIOUX CITY...TO FORT DODGE...TO NEAR DUBUQUE. OTHER SCATTERED SHOWERS WERE OCCURRING IN A 40 MILE WIDE AREA CENTERED FROM 20 MILES EAST OF WATERLOO NEAR INDEPENDENCE...TO 20 MILES NORTHEAST OF OTTUMWA NEAR RICHLAND. THE STORMS AND SHOWERS WERE MOVING EAST SOUTHEAST AT 40 MILES AN HOUR. JAK/BRF
Special weather statement, Jun 29, 7:43 PM CDT, 40 minutes before
IAZALL-300140- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 743 PM CDT TUE JUN 29 1993 ...A TORNADO WATCH IS IN EFFECT FOR MUCH OF THE NORTH HALF OF IOWA UNTIL 11 PM. ...A FLASH FLOOD WATCH IS IN EFFECT FOR NORTHWEST IOWA UNTIL MIDNIGHT... ...A FLASH FLOOD WATCH IS IN EFFECT FOR A SMALL PART OF EXTREME NORTHEAST IOWA TONIGHT... AT 732 PM CDT...INTENSE THUNDERSTORMS CONTINUED FROM NORTHWEST INTO NORTH CENTRAL IOWA. TH STORMS WERE LOCATED IN A 15 TO 20 MILE WIDE BAND EXTENDING FROM 35 MILES SOUTH OF SPENCER NEAR STORM LAKE...TO 10 MILES NORTHEAST OF MASON CITY NEAR MANLY. THESE STORMS CONTINUED TO PRODUCE TORRENTIAL RAINFALL...GUSTY WINDS...HAIL AND FREQUENT LIGHTNING. THE STORMS WERE LOCATED IN AND AREA OF STORMS AND SHOWERS GENERALLY NORTH OF A LINE FROM SIOUX CITY...TO FORT DODGE...TO NEAR DUBUQUE. OTHER SCATTERED SHOWERS WERE OCCURRING IN A 40 MILE WIDE AREA CENTERED FROM 20 MILES EAST OF WATERLOO NEAR INDEPENDENCE...TO 20 MILES NORTHEAST OF OTTUMWA NEAR RICHLAND. THE STORMS AND SHOWERS WERE MOVING EAST SOUTHEAST AT 40 MILES AN HOUR. JAK/BRF
Special weather statement, Jun 29, 8:03 PM CDT, 20 minutes before
IAZ006-007-008-009-010-011-016-017-018-019-026-027-028-029-038- 039-040-300200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WATERLOO IA 803 PM CDT TUE JUN 29 1993 ...STRONG THUNDERSTORMS ARE GOING TO SPREAD THROUGH NORTHEAST IOWA... AT 8 PM A LINE OF STRONG THUNDERSTORMS WAS OCCURRING FROM 30 MILES SOUTH OF MASON CITY AND EXTENDING NORTHEAST TO THE MINNESOTA BORDER 35 MILES NORTHEAST OF MASON CITY. THESE STORMS ARE CAPABLE OF PRODUCING VERY HEAVY RAINFALL...SMALL HAIL AND WINDS OF 40 MPH. PEOPLE IN THE CITIES OF NEW HAMPTON...NASHUA...CLARKSVILLE AND DUMONT SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER AND SEEK APPROPRIATE SHELTER AS THESE STORMS MOVE IN BY 830 PM. A TORNADO WATCH REMAINS IN EFFECT UNTIL 11 PM CDT. COLLAR/GOODSON
Special weather statement, Jun 29, 8:04 PM CDT, 19 minutes before
IAZ006-007-008-009-010-011-016-017-018-019-026-027-028-029-038- 039-040-300200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WATERLOO IA 803 PM CDT TUE JUN 29 1993 ...STRONG THUNDERSTORMS ARE GOING TO SPREAD THROUGH NORTHEAST IOWA... AT 8 PM A LINE OF STRONG THUNDERSTORMS WAS OCCURRING FROM 30 MILES SOUTH OF MASON CITY AND EXTENDING NORTHEAST TO THE MINNESOTA BORDER 35 MILES NORTHEAST OF MASON CITY. THESE STORMS ARE CAPABLE OF PRODUCING VERY HEAVY RAINFALL...SMALL HAIL AND WINDS OF 40 MPH. PEOPLE IN THE CITIES OF NEW HAMPTON...NASHUA...CLARKSVILLE AND DUMONT SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER AND SEEK APPROPRIATE SHELTER AS THESE STORMS MOVE IN BY 830 PM. A TORNADO WATCH REMAINS IN EFFECT UNTIL 11 PM CDT. COLLAR/GOODSON
Special weather statement, Jun 29, 8:20 PM CDT, 3 minutes before
IAZ006-007-008-009-010-011-016-017-018-019-026-027-028-029-038- 039-040-300200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WATERLOO IA 820 PM CDT TUE JUN 29 1993 ...REPORTS OF STRONG WINDS HAVE BEEN RECEIVED... AT 810 PM 45 TO 50 MPH WINDS WERE REPORTED AT CHARLES CITY...30 MILES EAST OF MASON CITY. IN ADDITION VERY HEAVY RAINFALL WAS REPORTED. WITH THE ALREADY SATURATED GROUND IT WILL TAKE LITTLE WIND TO UPROOT TREES. AT 815 THE STORMS WERE FROM 25 MILES WEST OF WATERLOO TO 25 MILES NORTHWEST OF DECORAH. OTHER STORMS WERE SCATTERED ABOUT NORTHEAST IOWA. THE CITIES IN THE PATH OF THE STRONGER STORMS ARE ALLISON...NEW HAMPTON...AND NASHUA AND SHOULD BE AFFECTED THROUGH 845 PM. THE POTENTIAL FOR URBAN AND SMALL STREAM FLOODING EXISTS AND THIS SITUATION WILL BE MONITORED AS THE STORMS APPROACH. COLLAR
Special weather statement, Jun 29, 8:21 PM CDT, 2 minutes before
IAZ006-007-008-009-010-011-016-017-018-019-026-027-028-029-038- 039-040-300200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WATERLOO IA 820 PM CDT TUE JUN 29 1993 ...REPORTS OF STRONG WINDS HAVE BEEN RECEIVED... AT 810 PM 45 TO 50 MPH WINDS WERE REPORTED AT CHARLES CITY...30 MILES EAST OF MASON CITY. IN ADDITION VERY HEAVY RAINFALL WAS REPORTED. WITH THE ALREADY SATURATED GROUND IT WILL TAKE LITTLE WIND TO UPROOT TREES. AT 815 THE STORMS WERE FROM 25 MILES WEST OF WATERLOO TO 25 MILES NORTHWEST OF DECORAH. OTHER STORMS WERE SCATTERED ABOUT NORTHEAST IOWA. THE CITIES IN THE PATH OF THE STRONGER STORMS ARE ALLISON...NEW HAMPTON...AND NASHUA AND SHOULD BE AFFECTED THROUGH 845 PM. THE POTENTIAL FOR URBAN AND SMALL STREAM FLOODING EXISTS AND THIS SITUATION WILL BE MONITORED AS THE STORMS APPROACH. COLLAR
The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 29, 7:05 PM CDT | Tornado Warning | DMX | Humboldt, Pocahontas | 25 min |
| Jun 29, 7:18 PM CDT | Flash Flood Warning | DMX | Kossuth, Palo Alto, Pocahontas | 3 hr |
| Jun 29, 7:26 PM CDT | Severe Thunderstorm Warning | DMX | Winnebago | 24 min |
| Jun 29, 7:27 PM CDT | Severe Thunderstorm Warning | DMX | Webster | 33 min |
| Jun 29, 7:34 PM CDT | Severe Thunderstorm Warning | DMX | Humboldt | 26 min |
| Jun 29, 8:01 PM CDT | Severe Thunderstorm Warning | DMX | Hamilton, Humboldt, Webster, Wright | 29 min |
| Jun 29, 8:17 PM CDT | Tornado Warning | DMX | Calhoun, Greene | 28 min |
| Jun 29, 8:38 PM CDT | Severe Thunderstorm Warning | DMX | Boone | 37 min |
| Jun 29, 8:44 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Bremer, Grundy | 46 min |
| Jun 29, 8:44 PM CDT | Tornado Warning | DMX | Calhoun | 31 min |
| Jun 29, 8:50 PM CDT | Tornado Warning | DMX | Boone, Greene | 25 min |
| Jun 29, 8:53 PM CDT | Severe Thunderstorm Warning | DMX | Marshall, Story | 52 min |
| Jun 29, 8:57 PM CDT | Tornado Warning | DMX | Crawford | 33 min |
| Jun 29, 9:01 PM CDT | Severe Thunderstorm Warning | DMX | Carroll, Sac | 29 min |
| Jun 29, 9:20 PM CDT | Tornado Warning | DMX | Jasper, Polk, Story | 25 min |
| Jun 29, 9:25 PM CDT | Severe Thunderstorm Warning | DMX | Buchanan, Fayette | 65 min |
| Jun 29, 9:28 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk | 32 min |
| Jun 29, 9:36 PM CDT | Severe Thunderstorm Warning | DMX | Benton, Tama | 54 min |
| Jun 29, 9:37 PM CDT | Severe Thunderstorm Warning | DMX | Dallas, Jasper, Polk | 68 min |
| Jun 29, 9:49 PM CDT | Severe Thunderstorm Warning | DMX | Marshall | 26 min |
| Jun 29, 10:00 PM CDT | Tornado Warning | DMX | Jasper, Polk | 26 min |
| Jun 29, 10:15 PM CDT | Flash Flood Warning | DMX | Boone | 96 min |
| Jun 30, 12:21 AM CDT | Flash Flood Warning | DMX | Decatur, Ringgold | 66 min |
| Jun 30, 3:01 PM CDT | Severe Thunderstorm Warning | DMX | Cass | 29 min |
Nearby
Severe Thunderstorm Warnings in Iowa, 1993Every severe thunderstorm warning in 1993
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.