Alert archive / Iowa / Tornado Warnings in 1993
Tornado Warning 4, NWS Des Moines, IA
NWS Des Moines, IA issued this tornado warning at Jun 8, 1993, 11:52 AM CDT for Winneshiek County, Iowa. It was in force for 38 min.
The area
The counties it named.
The facts
- Issued
- Jun 8, 1993, 11:52 AM CDT (16:52 UTC)
- Expired
- Jun 8, 1993, 12:30 PM CDT
- In force
- 38 min
- Issued by
- NWS Des Moines, IA
- Area
- Whole counties
County Winneshiek County, IA
The nearest sounding before it
Minneapolis, MN (KSTC), launched 12:00Z, 4.9 hours before the alert went out and 223 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
- NaN m above ground
- 0-6 km bulk shear
- 81 kt
- 0-1 km storm-relative helicity
- 500 m²/s²
- 0-3 km storm-relative helicity
- 604 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KALO 081653 TORALO IAC191-081730- BULLETIN - EBS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE WATERLOO IA 1152 AM CDT TUE JUN 8 1993 THE NATIONAL WEATHER SERVICE IN WATERLOO HAS ISSUED A TORNADO WARNING EFFECTIVE UNTIL 1230 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN NORTHEAST IOWA ...WINNESHIEK COUNTY AT 1149 AM NATIONAL WEATHER SERVICE RADAR IN WATERLOO WAS SHOWING A RADAR SIGNATURE INDICATIVE OF A TORNADO OVER SPILLVILLE. THIS STORM WAS MOVING NORTHEAST AT 35 TO 40 MILES AN HOUR AND WILL BE AFFECTING THE TOWNS OF DECORAH. AT 1137 GOLF BALL SIZE HAIL WAS REPORTED IN RIDGEWAY. DURING A TORNADO...THE SAFEST PLACE IS IN A BASEMENT. GET UNDER A WORKBENCH OR PIECE OF STURDY FURNITURE. IF NO BASEMENT IS AVAILABLE...SEEK SHELTER IN AN INTERIOR ROOM SUCH AS A CLOSET ON THE LOWEST FLOOR. AVOID WINDOWS. LINDENBERG &
What forecasters said that day
The local office's own words before this tornado 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 8, 10:47 AM CDT, 1 hour 5 minutes before
IAZALL-081635- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY.STRONG GUSTY WINDS...AND SMALL HAIL MAY BE EXPECTED WITH THE PASSAGE OF THESE STORMS. OTHER THUNDERSTORMS WERE ALSO LOCATED IN NORTH CENTRAL IOWA BETWEEN SAC CITY AND ALGONA...AND NEAR OGDEN AND JEWELL...ABOUT 40 MILES NORTH OF DES MOINES. THE THUNDERSTORMS WERE G ACROSS NORTHEAST INDIANA AND EXTREME NORTHWEST OHIO TO THE NORTH OF A LINE EXTENDING FROM 15 MILES SOUTHWEST OF NORTH MANCHESTER OR 30 MILES NORTHWEST OF MARION INDIANA TO 15 MILES NORTH OF FORT WAYNE TO 20 MILES NORTH OF DEFIANCE OHIO. THESE THUNDERSTORMS WERE MOVING EAST AT 40 MPH AND CONTAINED BRIEF HEAVY RAIN...SMALL HAIL AND DANGEROUS LIGHTNING. BY 1140 AM EST/ 1240 PM EDT THE THUNDERSTORMS WILL BE NORTH OF A LINE EXTENDING FROM JUST WEST OF WABASH OR 40 MILES SOUTHWEST OF FORT WAYNE TO FORT WAYNE TO 15 MILES NORTH OF DEFIANCE OHIO. REMAIN INDOORS WHILE THUNDERSTORMS MOVE THROUGH YOUR AREA AND STAY AWAY FROM WINDOWS. KOPSKY
Special weather statement, Jun 8, 10:47 AM CDT, 1 hour 5 minutes before
IAZALL-081635- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY.STRONG GUSTY WINDS...AND SMALL HAIL MAY BE EXPECTED WITH THE PASSAGE OF THESE STORMS. OTHER THUNDERSTORMS WERE ALSO LOCATED IN NORTH CENTRAL IOWA BETWEEN SAC CITY AND ALGONA...AND NEAR OGDEN AND JEWELL...ABOUT 40 MILES NORTH OF DES MOINES. THE THUNDERSTORMS WERE G ACROSS NORTHEAST INDIANA AND EXTREME NORTHWEST OHIO TO THE NORTH OF A LINE EXTENDING FROM 15 MILES SOUTHWEST OF NORTH MANCHESTER OR 30 MILES NORTHWEST OF MARION INDIANA TO 15 MILES NORTH OF FORT WAYNE TO 20 MILES NORTH OF DEFIANCE OHIO. THESE THUNDERSTORMS WERE MOVING EAST AT 40 MPH AND CONTAINED BRIEF HEAVY RAIN...SMALL HAIL AND DANGEROUS LIGHTNING. BY 1140 AM EST/ 1240 PM EDT THE THUNDERSTORMS WILL BE NORTH OF A LINE EXTENDING FROM JUST WEST OF WABASH OR 40 MILES SOUTHWEST OF FORT WAYNE TO FORT WAYNE TO 15 MILES NORTH OF DEFIANCE OHIO. REMAIN INDOORS WHILE THUNDERSTORMS MOVE THROUGH YOUR AREA AND STAY AWAY FROM WINDOWS. KOPSKY
Special weather statement, Jun 8, 11:10 AM CDT, 42 minutes before
IAZ006-007-008-009-010-011-016-017-018-019-026-027-028-029-038- 039-040-081700- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WATERLOO IA 1110 AM CDT TUE JUN 8 1993 ...A TORNADO WATCH IS IN EFFECT THROUGH 5 PM ... A TORNADO WATCH IS IN EFFECT FOR ALL OF NORTHEAST AND NORTH CENTRAL IOWA THROUGH 5 PM. AT 1110 AM WEATHER RADAR INDICATED RAPIDLY INTENSIFYING STORMS LOCATED ON A LINE FROM WATERLOO TO MASON CITY. THESE STORMS WERE PRODUCING SMALL HAIL...BRIEF HEAVY DOWNPOURS...AND STRONG WINDS. THESE STORMS ARE MOVING NORTH AT 35 TO 40 MILES AN HOUR AND WILL AFFECT THE WAVERLY...CHARLES CITY...OSAGE...NEW HAMPTON AND DECORAH AREAS BETWEEN 1115 AM AND NOON. THUNDERSTORMS ARE RAPIDLY DEVELOPING ACROSS NORTH CENTRAL IOWA AND WILL BE A THREAT ACROSS THE ENTIRE AREA THROUGH EARLY EVENING. THE POTENTIAL FOR SEVERE WEATHER IN NORTH CENTRAL AND NORTHEAST IOWA IS VERY HIGH TODAY. STAY TUNED TO YOUR LOCAL RADIO...LOCAL TELEVISION AND NOAA WEATHER RADIO FOR ADDITIONAL UPDATES AND WARNINGS. DP
Special weather statement, Jun 8, 11:17 AM CDT, 35 minutes before
IAZ006-007-008-009-010-011-016-017-018-019-026-027-028-029-038- 039-040-081700- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WATERLOO IA 1110 AM CDT TUE JUN 8 1993 ...A TORNADO WATCH IS IN EFFECT THROUGH 5 PM ... A TORNADO WATCH IS IN EFFECT FOR ALL OF NORTHEAST AND NORTH CENTRAL IOWA THROUGH 5 PM. AT 1110 AM WEATHER RADAR INDICATED RAPIDLY INTENSIFYING STORMS LOCATED ON A LINE FROM WATERLOO TO MASON CITY. THESE STORMS WERE PRODUCING SMALL HAIL...BRIEF HEAVY DOWNPOURS...AND STRONG WINDS. THESE STORMS ARE MOVING NORTH AT 35 TO 40 MILES AN HOUR AND WILL AFFECT THE WAVERLY...CHARLES CITY...OSAGE...NEW HAMPTON AND DECORAH AREAS BETWEEN 1115 AM AND NOON. THUNDERSTORMS ARE RAPIDLY DEVELOPING ACROSS NORTH CENTRAL IOWA AND WILL BE A THREAT ACROSS THE ENTIRE AREA THROUGH EARLY EVENING. THE POTENTIAL FOR SEVERE WEATHER IN NORTH CENTRAL AND NORTHEAST IOWA IS VERY HIGH TODAY. STAY TUNED TO YOUR LOCAL RADIO...LOCAL TELEVISION AND NOAA zWEATHER RADIO FOR ADDITIONAL UPDATES AND WARNINGS. DP
Special weather statement, Jun 8, 11:45 AM CDT, 7 minutes before
IAZALL-081735- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 1145 AM CDT TUE JUN 8 1993 ...A TORNADO WATCH IS IN EFFECT FOR CENTRAL AND EASTERN IOWA UNTIL 5 PM... ...A FLASH FLOOD WATCH IS IN EFFECT FOR NORTH CENTRAL AND EASTERN IOWA THIS AFTERNOON... AT 1135 AM CDT...AN INTENSE THUNDERSTORM WITH VERY HEAVY RAIN WAS LOCATED IN NORTHEAST IOWA ABOUT 15 MILES SOUTHWEST OF DECORAH...AND IN NORTH CENTRAL IOWA ABOUT 10 MILES NORTHEAST OF ALGONA. VERY HEAVY RAIN...STRONG GUSTY WINDS...AND SMALL HAIL MAY BE EXPECTED WITH THE PASSAGE OF THESE STORMS. SCATTERED SHOWERS AND THUNDERSHOWERS WERE ALSO LOCATED IN CENTRAL AND NORTH CENTRAL IOWA. THESE SHOWERS AND THUNDERSTORMS WERE NORTHWEST OF A LINE FROM PELLA TO LACROSSE...AND NORTHEAST OF A LINE FROM PELLA TO ESTERVILLE. THE THUNDERSTORMS WERE MOVING TO THE NORTHEAST AT 30 MILES AN HOUR. SCOTT
Special weather statement, Jun 8, 11:51 AM CDT, 1 minute before
IAZALL-081735- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 1145 AM CDT TUE JUN 8 1993 ...A TORNADO WATCH IS IN EFFECT FOR CENTRAL AND EASTERN IOWA UNTIL 5 PM... ...A FLASH FLOOD WATCH IS IN EFFECT FOR NORTH CENTRAL AND EASTERN IOWA THIS AFTERNOON... AT 1135 AM CDT...AN INTENSE THUNDERSTORM WITH VERY HEAVY RAIN WAS LOCATED IN NORTHEAST IOWA ABOUT 15 MILES SOUTHWEST OF DECORAH...AND IN NORTH CENTRAL IOWA ABOUT 10 MILES NORTHEAST OF ALGONA. VERY HEAVY RAIN...STRONG GUSTY WINDS...AND SMALL HAIL MAY BE EXPECTED WITH THE PASSAGE OF THESE STORMS. SCATTERED SHOWERS AND THUNDERSHOWERS WERE ALSO LOCATED IN CENTRAL AND NORTH CENTRAL IOWA. THESE SHOWERS AND THUNDERSTORMS WERE NORTHWEST OF A LINE FROM PELLA TO LACROSSE...AND NORTHEAST OF A LINE FROM PELLA TO ESTERVILLE. THE THUNDERSTORMS WERE MOVING TO THE NORTHEAST AT 30 MILES AN HOUR. SCOTT
The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 7, 7:03 PM CDT | Severe Thunderstorm Warning | DMX | Appanoose | 27 min |
| Jun 7, 7:14 PM CDT | Tornado Warning | DMX | Dickinson | 26 min |
| Jun 7, 7:47 PM CDT | Severe Thunderstorm Warning | DMX | Wapello | 43 min |
| Jun 7, 8:09 PM CDT | Flash Flood Warning | DMX | Appanoose, Monroe, Wayne | 3 hr |
| Jun 7, 8:09 PM CDT | Flash Flood Warning | DMX | Wapello | 3 hr |
| Jun 7, 8:37 PM CDT | Flash Flood Warning | DMX | Keokuk | 2 hr |
| Jun 7, 8:45 PM CDT | Severe Thunderstorm Warning | DMX | Appanoose, Davis | 25 min |
| Jun 7, 9:02 PM CDT | Flash Flood Warning | DMX | Davis | 118 min |
| Jun 7, 9:18 PM CDT | Severe Thunderstorm Warning | DMX | Johnson, Washington | 42 min |
| Jun 7, 10:53 PM CDT | Flash Flood Warning | DMX | Appanoose, Davis | 97 min |
| Jun 8, 11:31 AM CDT | Severe Thunderstorm Warning | DMX | Winneshiek | 29 min |
| Jun 8, 12:16 PM CDT | Severe Thunderstorm Warning | DMX | Allamakee | 44 min |
| Jun 8, 1:11 PM CDT | Tornado Warning | DMX | Worth | 49 min |
| Jun 8, 1:16 PM CDT | Severe Thunderstorm Warning | DMX | Mitchell | 42 min |
| Jun 8, 1:45 PM CDT | Severe Thunderstorm Warning | DMX | Howard, Winneshiek | 26 min |
| Jun 8, 1:48 PM CDT | Tornado Warning | DMX | Wright | 27 min |
| Jun 8, 6:01 PM CDT | Tornado Warning | DMX | Washington | 29 min |
Nearby
Tornado Warnings in Iowa, 1993Every tornado warning in 1993Tornadoes 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.