Alert archive / Iowa / Flash Flood Warnings in 1993
Flash Flood Warning 39, NWS Des Moines, IA
NWS Des Moines, IA issued this flash flood warning at Jun 29, 1993, 6:55 PM CDT for Buena Vista County, Iowa. It was in force for 2 hr.
The area
The counties it named.
The facts
- Issued
- Jun 29, 1993, 6:55 PM CDT (23:55 UTC)
- Expired
- Jun 29, 1993, 9:00 PM CDT
- In force
- 2 hr
- Issued by
- NWS Des Moines, IA
- Area
- Whole counties
County Buena Vista County, IA
The nearest sounding before it
Omaha, NE (KOAX), launched 12:00Z, 11.9 hours before the alert went out and 187 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
- 515 J/kg
- Mixed-layer CIN
- -378 J/kg
- Mixed-layer LCL
- 1356 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 104 m²/s²
- 0-3 km storm-relative helicity
- 168 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.6
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KDSM 292356 FFWDSM IAC021-300200- BULLETIN - EBS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE DES MOINES IA 655 PM CDT TUE JUN 29 1993 THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 900 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATION(S)... IN NORTHWEST IOWA ...BUENA-VISTA COUNTY AT 650 PM...A NWS COOPERATIVE OBSERVER AT SIOUX RAPIDS IN NORTH BUENA VIST COUNTY...ABOUT 50 MILES NOTHWEST OF FORT DODGE...REPORTED RECEIVING 1.6 INCHES OF RAIN IN A 15 MINUTE PERIOD. THE STORM THAT PRODUCED THIS VERY HEAVY RAIN WAS ON THE SOUTH EDGE OF A LINE OF INTENSE THUNDERSTORMS THAT STRETCHED EAST-WEST ACROSS MOST OF NORTHWEST IOWA. THE STORMS WERE MOVING EAST-SOUTHEAST AT NEARLY 40 MILES AN HOUR AND DEVELOPING VERY RAPIDLY. NUMEROUS REPORTS OF HEAVY RAIN HAVE BEEN RECEIVED FROM THE STORMS NORTH OF SIOUX RAPIDS...WITH RATES OF UP TO 4 INCHES AN HOUR REPORTED. STRONG WINDS TO 60 MPH ARE ALSO POSSIBLE WITH THE STRONGEST STORMS. A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS IMMINENT. MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS BRIDGES...DIPS...OR LOW SPOTS IF WATER COVERS THE ROADWAY. NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT. TO ESCAPE RISING WATER MOVE UP TO HIGHER GROUND. BURKE &
What forecasters said that day
The local office's own words before this flash flood 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, 5:54 PM CDT, 1 hour 1 minute before
IAZ006-007-008-009-010-011-016-017-018-019-026-027-028-029-038- 039-040-300000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WATERLOO IA 554 PM CDT TUE JUN 29 1993 ...STAY ALERT FOR POSSIBLE SEVERE WEATHER THIS EVENING... A TORNADO WATCH IS IN EFFECT FOR ALL OF NORTHEAST AND NORTH CENTRAL IOWA UNTIL 11 PM. AT 545 PM STRONG THUNDERSTORMS WERE OCCURRING 25 MILES SOUTHEAST OF MASON CITY OR 5 MILES WEST OF MARBLE ROCK. THESE STORMS WERE MOVING EAST AT 35 MPH AND WILL PRODUCE WINDS OF NEAR 40 MPH AND WILL MOVE THROUGH MARBLE ROCK...GREENE...NASHUA AND CHARLES CITY THROUGH 615 PM. OTHER STORMS WERE DEVELOPING RAPIDLY JUST WEST OF WATERLOO. NO MOVEMENT HAS BEEN DETERMINED WITH THESE STORMS. AN EXTREMELY INTENSE STORM WAS LOCATED 45 MILES WEST OF MASON CITY AND THIS STORM SHOULD MOVE INTO THE BRITT AND GARNER AREAS BY 640 PM. NO SEVERE WEATHER HAS BEEN REPORTED WITH ANY STORMS IN NORTHEAST IOWA. STAY ALERT FOR RAPIDLY CHANGING WEATHER AND BE PREPARED TO MOVE TO A PLACE OF SHELTER QUICKLY. COLLAR
Special weather statement, Jun 29, 5:55 PM CDT, 1 hour before
IAZ006-007-008-009-010-011-016-017-018-019-026-027-028-029-038- 039-040-300000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WATERLOO IA 554 PM CDT TUE JUN 29 1993 ...STAY ALERT FOR POSSIBLE SEVERE WEATHER THIS EVENING... A TORNADO WATCH IS IN EFFECT FOR ALL OF NORTHEAST AND NORTH CENTRAL IOWA UNTIL 11 PM. AT 545 PM STRONG THUNDERSTORMS WERE OCCURRING 25 MILES SOUTHEAST OF MASON CITY OR 5 MILES WEST OF MARBLE ROCK. THESE STORMS WERE MOVING EAST AT 35 MPH AND WILL PRODUCE WINDS OF NEAR 40 MPH AND WILL MOVE THROUGH MARBLE ROCK...GREENE...NASHUA AND CHARLES CITY THROUGH 615 PM. OTHER STORMS WERE DEVELOPING RAPIDLY JUST WEST OF WATERLOO. NO MOVEMENT HAS BEEN DETERMINED WITH THESE STORMS. AN EXTREMELY INTENSE STORM WAS LOCATED 45 MILES WEST OF MASON CITY AND THIS STORM SHOULD MOVE INTO THE BRITT AND GARNER AREAS BY 640 PM. NO SEVERE WEATHER HAS BEEN REPORTED WITH ANY STORMS IN NORTHEAST IOWA. STAY ALERT FOR RAPIDLY CHANGING WEATHER AND BE PREPARED TO MOVE TO A PLACE OF SHELTER QUICKLY. COLLAR
Special weather statement, Jun 29, 6:22 PM CDT, 33 minutes before
IAZ006-007-008-009-010-011-016-017-018-019-026-027-028-029-038- 039-040-300030- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WATERLOO IA 622 PM CDT TUE JUN 29 1993 ...SHOWERS AND THUNDERSTORMS CONTINUE IN NORTHEAST IOWA... AT 615 PM THUNDERSTORMS WERE OCCURRING THROUGHOUT NORTHEAST IOWA FROM I-35 TO HIGHWAY 63. THESE STORMS WERE MOVING EAST AT 30 MPH AND WILL AFFECT THE WATERLOO/CEDAR FALLS...CHARLES CITY AND NASHUA AREAS THROUGH 645 PM. NO SEVERE WEATHER HAS BEEN REPORTED WITH THIS AREA OF STORMS. NOTE: A TORNADO WATCH REMAINS IN EFFECT FOR ALL OF NORTHEAST AND NORTH CENTRAL IOWA UNTIL 11 PM. ALSO...A SEVERE THUNDERSTORM WARNING IS IN EFFECT FOR HANCOCK COUNTY UNTIL 7H PM...MORE INFORMATION ON THIS PARTICULAR STORM FORTHCOMING IN A "SEVERE WEATHER STATEMENT". COLLAR
Special weather statement, Jun 29, 6:22 PM CDT, 33 minutes before
IAZ006-007-008-009-010-011-016-017-018-019-026-027-028-029-038- 039-040-300030- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WATERLOO IA 622 PM CDT TUE JUN 29 1993 ...SHOWERS AND THUNDERSTORMS CONTINUE IN NORTHEAST IOWA... AT 615 PM THUNDERSTORMS WERE OCCURRING THROUGHOUT NORTHEAST IOWA FROM I-35 TO HIGHWAY 63. THESE STORMS WERE MOVING EAST AT 30 MPH AND WILL AFFECT THE WATERLOO/CEDAR FALLS...CHARLES CITY AND NASHUA AREAS THROUGH 645 PM. NO SEVERE WEATHER HAS BEEN REPORTED WITH THIS AREA OF STORMS. NOTE: A TORNADO WATCH REMAINS IN EFFECT FOR ALL OF NORTHEAST AND NORTH CENTRAL IOWA UNTIL 11 PM. ALSO...A SEVERE THUNDERSTORM WARNING IS IN EFFECT FOR HANCOCK COUNTY UNTIL 7 PM...MORE INFORMATION ON THIS PARTICULAR STORM FORTHCOMING IN A "SEVERE WEATHER STATEMENT". COLLAR "@JF.66WWUS t#6WWUSv N6WWUSD tWWUSP WUUS 76WWUS8 7`WWUS^ :a`WWUS 36WWUS . `WWUS @"s`WWUS 0XWSUS = WUUS `WWUS 6WWUSZ <WWUS P ; WUUS0 qWWUS `3U^WSUS T7q4WSUSZ 6WWUS |6WWUS <JJJ**lll~ WUUS@ q6WWUS $iX WUUS LA`WWUS q6WWUS 4LLL[I6WWUS< r*H WUUSL PI`WWUSR TP6WWUSd M`WWUS$ `i`WWUS R WUUS XWOUS sF6WWUSH w WUUS n I`WWUS jI WUUS o6WWUS` xS6WWUS tWWUS 8fWWUS
Special weather statement, Jun 29, 6:43 PM CDT, 12 minutes before
IAZALL-300040- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 643 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 630 PM CDT...ISOLATED INTENSE THUNDERSTORMS WERE OCCURRING IN A 15 MILE WIDE BAND EXTENDING FROM 25 MILES SOUTHWEST OF SPENCER NEAR CHEROKEE...TO 20 MILES NORTHWEST OF MASON CITY. OTHER INTENSE STORMS WERE LOCATED 15 MILES SOUTHEAST OF MASON CITY...AND 25 MILES EAST OF MASON CITY NEAR CHARLES CITY. THESE STORMS WERE PRODUCING TORRENTIAL RAINFALL...GUSTY WINDS...HAIL AND NEARLY CONTINUOUS LIGHTNING. THE STORMS WERE OCCURRING IN AN AREA OF SHOWERS AND STORMS NORTH OF A LINE FROM 20 MILES NORTHEAST OF SIOUX CITY NEAR LE MARS...TO NEAR WATERLOO. SCATTERED SHOWERS AND A FEW THUNDERSTORMS WERE ALSO OCCURRING IN A 30 MILE WIDE BAND FROM 30 MILES WEST OF WATERLOO NEAR ACKLEY...TO 15 MILES NORTHWEST OF OTTUMWA NEAR OSKALOOSA. THE STORMS AND SHOWERS WERE MOVING EAST SOUTHEAST AT 40 MILES AN HOUR. JAK/BRF
Special weather statement, Jun 29, 6:43 PM CDT, 12 minutes before
IAZALL-300040- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 643 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 630 PM CDT...ISOLATED INTENSE THUNDERSTORMS WERE OCCURRING IN A 15 MILE WIDE BAND EXTENDING FROM 25 MILES SOUTHWEST OF SPENCER NEAR CHEROKEE...TO 20 MILES NORTHWEST OF MASON CITY. OTHER INTENSE STORMS WERE LOCATED 15 MILES SOUTHEAST OF MASON CITY...AND 25 MILES EAST OF MASON CITY NEAR CHARLES CITY. THESE STORMS WERE PRODUCING TORRENTIAL RAINFALL...GUSTY WINDS...HAIL AND NEARLY CONTINUOUS LIGHTNING. THE STORMS WERE OCCURRING IN AN AREA OF SHOWERS AND STORMS NORTH OF A LINE FROM 20 MILES NORTHEAST OF SIOUX CITY NEAR LE MARS...TO NEAR WATERLOO. SCATTERED SHOWERS AND A FEW THUNDERSTORMS WERE ALSO OCCURRING IN A 30 MILE WIDE BAND FROM 30 MILES WEST OF WATERLOO NEAR ACKLEY...TO 15 MILES NORTHWEST OF OTTUMWA NEAR OSKALOOSA. THE STORMS AND SHOWERS WERE MOVING EAST SOUTHEAST AT 40 MILES AN HOUR. JAK/BRF
The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 29, 3:24 PM CDT | Severe Thunderstorm Warning | DMX | Clay, Dickinson | 28 min |
| Jun 29, 4:11 PM CDT | Flash Flood Warning | DMX | Dickinson | 3 hr |
| Jun 29, 4:30 PM CDT | Severe Thunderstorm Warning | DMX | Dickinson | 30 min |
| Jun 29, 5:01 PM CDT | Severe Thunderstorm Warning | DMX | Emmet | 39 min |
| Jun 29, 5:05 PM CDT | Flash Flood Warning | DMX | Emmet | 3 hr |
| Jun 29, 5:43 PM CDT | Flash Flood Warning | DMX | Kossuth, Palo Alto | 62 min |
| Jun 29, 5:43 PM CDT | Severe Thunderstorm Warning | DMX | Kossuth, Palo Alto | 62 min |
| Jun 29, 5:46 PM CDT | Flash Flood Warning | DMX | Clay, Dickinson | 59 min |
| Jun 29, 5:46 PM CDT | Severe Thunderstorm Warning | DMX | Clay, Dickinson | 59 min |
| Jun 29, 5:58 PM CDT | Tornado Warning | DMX | Kossuth | 32 min |
| Jun 29, 6:04 PM CDT | Severe Thunderstorm Warning | DMX | Palo Alto | 26 min |
| Jun 29, 6:10 PM CDT | Severe Thunderstorm Warning | DMX | Hancock | 50 min |
| Jun 29, 6:30 PM CDT | Severe Thunderstorm Warning | DMX | Pocahontas | 30 min |
| Jun 29, 6:42 PM CDT | Flash Flood Warning | DMX | Kossuth | 3 hr |
Nearby
Flash Flood Warnings in Iowa, 1993Every flash flood 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.