Alert archive / Iowa / Flash Flood Warnings in 1993
Flash Flood Warning 20, NWS Des Moines, IA
NWS Des Moines, IA issued this flash flood warning at Jun 12, 1993, 5:47 PM CDT for 4 counties in Iowa. It was in force for 4 hr.
The area
The counties it named.
The facts
- Issued
- Jun 12, 1993, 5:47 PM CDT (22:47 UTC)
- Expired
- Jun 12, 1993, 9:45 PM CDT
- In force
- 4 hr
- Issued by
- NWS Des Moines, IA
- Area
- Whole counties
Counties Emmet County, IA, Kossuth County, IA, Palo Alto County, IA, Pocahontas County, IA
The nearest sounding before it
Minneapolis, MN (KSTC), launched 12:00Z, 10.8 hours before the alert went out and 209 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
- 12 kt
- 0-1 km storm-relative helicity
- 46 m²/s²
- 0-3 km storm-relative helicity
- 100 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 KDSM 122249 FFWDSM IAC109-063-147-151-130245- BULLETIN - EBS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE DES MOINES IA 547 PM CDT SAT JUN 12 1993 THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 945 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN NORTH CENTRAL IOWA ...KOSSUTH COUNTY IN NORTHWEST IOWA ...EMMET COUNTY...PALO-ALTO COUNTY ...NORTHERN POCAHONTAS COUNTY AT 540 PM CDT...DES MOINES RADAR DETECTED STRONG THUNDERSTORMS MOVING ACROSS BUENA VISTA...CLAY...AND WESTERN PALO ALTO COUNTIES. THE THUNDERSTORMS CONTINUED TO MOVE NORTHEAST AT 25 MPH WITH NEW DEVELOPMENT NOTED TO THE SOUTHWEST. THESE AREAS WILL LIKELY SEE ADDITIONAL HEAVY RAINS AS THE NEW STORMS MOVE ACROSS THE AREA. SOME OF THE TOWNS AND COMMUNITIES THAT WILL BE AFFECTED INCLUDE SPENCER...EMMETSBURG...ALGONA...ESTHERVILLE. RIVERS THAT WILL BE AFFECTED INCLUDE TRIBUTARIES ALONG THE MAIN STEM OF THE DES MOINES RIVER AND TRIBUTARIES ALONG THE EAST FORK OF THE DES MOINES RIVER. IN ADDITION...RURAL ROADWAYS AS WELL AS COUNTY ROADS WILL BE FLOODED AS THESE THUNDERSTORMS MOVE ACROSS NORTHWEST IOWA DURING THE NEXT HOUR. DO NOT DRIVEh YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY. MOVE TO HIGHER GROUND. SMITH
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
Local storm report, Jun 12, 5:18 PM CDT, 29 minutes before
LOCAL STORM REPORT...PRELIMINARY
NATIONAL WEATHER SERVICE DES MOINES IA
518 PM CDT SAT JUN 12 1993
TIME EVENT LOCATION -CITY AND COUNTY
...EVENT OCCURRED ON JUN 12 1993...
430 PM CDT GOLFBALL SIZE HAIL 30 SW 3SE OR 8 SW REMBRANDT
IN N BUENA VISTA COUNTY
...FOLLOWED BY TORRENTIAL RAIN...
BURKELocal storm report, Jun 12, 5:18 PM CDT, 29 minutes before
LOCAL STORM REPORT...PRELIMINARY
NATIONAL WEATHER SERVICE DES MOINES IA
518 PM CDT SAT JUN 12 1993
TIME EVENT LOCATION -CITY AND COUNTY
...EVENT OCCURRED ON JUN 12 199"3...
430 PM CDT GOLFBALL SIZE HAIL 30 SW 3SE OR 8 SW REMBRANDT
IN N BUENA VISTA COUNTY
...FOLLOWED BY TORRENTIAL RAIN...
BURKESpecial weather statement, Jun 12, 5:24 PM CDT, 23 minutes before
IAC021-041-122330- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 524 PM CDT SAT JUN 12 1993 ...TORRENTIAL RAINFALL CONTINUES ACROSS PARTS OF NORTHWEST IOWA LATE THIS AFTERNOON... AT 522 PM CDT...DES MOINES RADAR CONTINUED TO SHOW STRONG THUNDERSTORMS OVER NORTHWEST IOWA. THE STRONGEST STORMS WERE CONTINUING OVER BUENA VIS AND CLAY COUNTIES. UNOFFICIAL RAINFALL REPORTS RECEIVED AS OF 5PM INCLUDE: 5 INCHES OF RAIN IN ABOUT AN HOUR AND A HALF 7 MILES NORTH OF ALTA IN WESTERN BUENA VISTA COUNTY. 2.6 INCHES RECORDED AT PETERSON...IN EXTREME SOUTHWEST CLAY COUNTY. 2.34 INCHES IN A 45 MINUTE PERIOD 5 MILES WEST OF THE TOWN OF REMBRANDT IN NORTH CENTRAL BUENA VISTA COUNTY. THUNDERSTORMS WILL CONTINUE TO MOVE ACROSS BUENA VISTA AND CLAY COUNTIES DURING THE NEXT HOUR WITH ADDITIONAL HEAVY RAINFALL POSSIBLE. IF YOU LIVE NEAR A FLOOD PRONE AREA...BE PREPARED TO MOVE TO SAFETY IF FLOODING IS OBSERVED IN YOUR AREA. SMITH
Special weather statement, Jun 12, 5:25 PM CDT, 22 minutes before
IAC021-041-122330- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 524 PM CDT SAT JUN 12 1993 ...TORRENTIAL RAINFALL CONTINUES ACROSS PARTS OF NORTHWEST IOWA LATE THIS AFTERNOON... AT 522 PM CDT...DES MOINES RADAR CONTINUED TO SHOW STRONG THUNDERSTORMS OVER NORTHWEST IOWA. THE STRONGEST STORMS WERE CONTINUING OVER BUENA VIS AND CLAY COUNTIES. UNOFFICIAL RAINFALL REPORTS RECEIVED AS OF 5PM INCLUDE: 5 INCHES OF RAIN IN ABOUT AN HOUR AND A HALF 7 MILES NORTH OF ALTA IN WESTERN BUENA VISTA COUNTY. 2.6 INCHES RECORDED AT PETERSON...IN EXTREME SOUTHWEST CLAY COUNTY. 2.34 INCHES IN A 45 MINUTE PERIOD 5 MILES WEST OF THE TOWN OF REMBRANDT IN NORTH CENTRAL BUENA VISTA COUNTY. THUNDERSTORMS WILL CONTINUE TO MOVE ACROSS BUENA VISTA AND CLAY COUNTIES DURING THE NEXT HOUR WITH ADDITIONAL HEAVY RAINFALL POSSIBLE. IF YOU LIVE NEAR A FLOOD PRONE AREA...BE PREPARED TO MOVE TO SAFETY IF FLOODING IS OBSERVED IN YOUR .AREA. SMITH
Special weather statement, Jun 12, 5:43 PM CDT, 4 minutes before
IAZALL-122340- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 545 PM CDT SAT JUN 12 1993 AT 525 PM CDT...A SMALL AREA OF STRONG THUNDERSTORMS CONTINUED OVER NORTHWEST IOWA. THE STRONGEST STORM WAS LOCATED 15 MILES SOUTHEAST OF SPENCER...NEAR LAURENS. THESE STORMS HAVE BEEN PRODUCING VERY HEAVY RAIN...WIND GUSTS UP TO 50 MILES AN HOUR AND PEA TO MARBLE SIZE HAIL. THESE STRONG STORMS WERE PART OF A LARGER AREA OF SHOWERS AND STORMS OVER THE NORTHWEST THIRD OF IOWA. THE RAIN WAS NORTHWEST OF A LINE THAT EXTENDED FROM 20 MILES EAST OF COUNCIL BLUFFS TO 20 MILES WEST OF MASON CITY. SOME RAINFALL AMOUNTS WHICH HAVE COME FROM THESE STRONG THUNDERSTORMS AFRE SIOUX RAPIDS 2.16... DICKEN 2.50... GREENVILLE 4.75 PETERSON 5.50 AND ALTA 6.00. THESE AMOUNTS ALL CAME IN 90 MINUTES OR LESS. THE SHOWERS AND STORMS WERE MOVING NORTHEAST AT 30 MILES AN HOUR. FILLBACH
Special weather statement, Jun 12, 5:45 PM CDT, 2 minutes before
IAZALL-122340- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 545 PM CDT SAT JUN 12 1993 AT 525 PM CDT...A SMALL AREA OF STRONG THUNDERSTORMS CONTINUED OVER NORTHWEST IOWA. THE STRONGEST STORM WAS LOCATED 15 MILES SOUTHEAST OF SPENCER...NEAR LAURENS. THESE STORMS HAVE BEEN PRODUCING VERY HEAVY RAIN...WIND GUSTS UP TO 50 MILES AN HOUR AND PEA TO MARBLE SIZE HAIL. THESE STRONG STORMS WERE PART OF A LARGER AREA OF SHOWERS AND STORMS OVER THE NORTHWEST THIRD OF IOWA. THE RAIN WAS NORTHWEST OF A LINE THAT EXTENDED FROM 20 MILES EAST OF COUNCIL BLUFFS TO 20 MILES WEST OF MASON CITY. SOME RAINFALL AMOUNTS WHICH HAVE COME FROM THESE STRONG THUNDERSTORMS ARE SIOUX RAPIDS 2.16... DICKEN 2.50... GREENVILLE 4.75 PETERSON 5.50 AND ALTA 6.00. THESE AMOUNTS ALL CAME IN 90 MINUTES OR LESS. THE SHOWERS AND STORMS WERE MOVING NORTHEAST AT 30 MILES AN HOUR. FILLBACH
The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 12, 4:00 PM CDT | Severe Thunderstorm Warning | DMX | Buena Vista | 45 min |
| Jun 12, 5:34 PM CDT | Flash Flood Warning | DMX | Buena Vista, Clay, Sac | 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.