Alert archive / Iowa / Flash Flood Warnings in 1993
Flash Flood Warning 3, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this flash flood warning at Jun 12, 1993, 5:20 PM CDT for Cherokee County, Ida County, Iowa. It was in force for 4 hr.
The area
The counties it named.
The facts
- Issued
- Jun 12, 1993, 5:20 PM CDT (22:20 UTC)
- Expired
- Jun 12, 1993, 9:15 PM CDT
- In force
- 4 hr
- Issued by
- NWS Sioux Falls, SD
- Area
- Whole counties
Counties Cherokee County, IA, Ida County, IA
The nearest sounding before it
Omaha, NE (KOAX), launched 12:00Z, 10.3 hours before the alert went out and 153 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
- 116 J/kg
- Mixed-layer CIN
- -90 J/kg
- Mixed-layer LCL
- 949 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 35 m²/s²
- 0-3 km storm-relative helicity
- 67 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSUX 122222 FFWSUX IAC035-093-130215- BULLETIN - EBS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE SIOUX CITY IA 520 PM CDT SAT JUN 12 1993 THE NATIONAL WEATHER SERVICE IN SIOUX CITY HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 915 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN NORTHWEST IOWA ...EASTERN CHEROKEE COUNTY IN WEST CENTRAL IOWA ...EASTERN IDA COUNTY THROUGH 515 PM STRONG THUNDERSTORMS PRODUCED HEAVY RAINFALL IN SHORT PERIODS OF TIME ACROSS MUCH OF BUENA VISTA COUNTY IN IOWA. THIS RAIN IS EXPECTED TO AFFECT THE RIVER STAGES ALONG THE LITTLE SIOUX RIVER AND MAPLE RIVER IN EASTERN CHEROKEE COUNTY...AND THE MAPLE RIVER IN EASTERN IDA COUNTY. PEOPLE AROUND THESE AREAS...INCLUDING CHEROKEE...AURELIA...GALVA AND IDA GROVE SHOULD EXPECTED THESE RIVERS AND SMALL STREAMS AROUND THEM TO RISE RAPIDLY DURING THE NEXT 2 TO 4 HOURS. IF YOU LIVE NEAR OR ALONG THESE RIVERS...SEEK HIGHER GROUND WHEN YOU NOTICE INCREASING WATER LEVELS. MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES. VEHICLES CAUGHT IN RISING WATERS SHOULD BE ABANDONED. DO NOT ATTEMPT TO CROSS BRIDGES OR LOW SPOTS IF WATER COVERS THEM. NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT. ACT QUICKLY. MOVE TO HIGHER GROUND TO ESCAPE RISING WATER. S QUINN
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 12, 4:10 PM CDT, 1 hour 10 minutes before
IAZ013-020-021-031-032-043-NEZ094>096-SDZ066-122215- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX CITY IA 410 PM CDT SAT JUN 12 1993 ...A STRONG THUNDERSTORM WAS SOUTHWEST OF SIOUX CITY... AT 405 PM CDT A STRONG THUNDERSTORM WAS 30 MILES SOUTHWEST OF SIOUX CITY ...JUST EAST OF PENDER NEBRASKA. MOVEMENT WAS NORTHEAST AT 25 MILES AN HOUR. THE STORM SHOULD MOVE THROUGH WALTHILL AND WINNEBAGO NEBRASKA BETWEEN 430 AND 500 PM. PEOPLE IN THESE AREAS CAN EXPECT BRIEF HEAVY RAIN... DANGEROUS LIGHTNING AND SMALL HAIL. OTHER SHOWERS AND THUNDERSTORMS ARE EXPECTED TO CONTINUE EAST OF A LINE FROM SHELDON IOWA TO PENDER NEBRASKA THROUGH EARLY EVENING. S QUINN
Special weather statement, Jun 12, 4:10 PM CDT, 1 hour 10 minutes before
IAZ013-020-021-031-032-043-NEZ094>096-SDZ066-122215- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX CITY IA 410 PM CDT SAT JUN 12 1993 ...A STRONG THUNDERSTORM WAS SOUTHWEST OF SIOUX CITY... AT 405 PM CDT A STRONG THUNDERSTORM WAS 30 MILES SOUTHWEST OF SIOUX CITY ...JUST EAST OF PENDER NEBRASKA. MOVEMENT WAS NORTHEAST AT 25 MILES AN HOUR. THE STORM SHOULD MOVE THROUGH WALTHILL AND WINNEBAGO NEBRASKA BETWEEN 430 AND 500 PM. PEOPLE IN THESE AREAS CAN EXPECT BRIEF HEAVY RAIN... DANGEROUS LIGHTNING AND SMALL HAIL. OTHER SHOWERS AND THUNDERSTORMS ARE EXPECTED TO CONTINUE EAST OF A LINE FROM SHELDON IOWA TO PENDER NEBRASKA THROUGH EARLY EVENING. S QUINN
Special weather statement, Jun 12, 4:49 PM CDT, 31 minutes before
IAZ013-020-021-031-032-043-NEZ094>096-SDZ066-122230- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX CITY IA 449 PM CDT SAT JUN 12 1993 ...SCATTERED STRONG THUNDERSTORMS WILL CONTINUE LATE THIS AFTERNOON... AT 445 PM CDT A STRONG THUNDERSTORM WAS 25 MILES SOUTH OF SIOUX CITY... OR WEST OF WHITING IOWA. MOVEMENT WAS NORTHEAST AT 25 MILES AN HOUR. THIS STORM WILL PRODUCE HEAVY RAIN...DANGEROUS LIGHTNING AND SMALL HAIL AS IT MOVES THROUGH WHITING...SLOAN AND HORNICK IOWA AROUND 515 PM. OTHER STRONG THUNDERSTORMS PRODUCING HEAVY RAIN ARE EXPECTED TO MOVE THROUGH BLENCOE AND ONAWA IOWA AROUND 530 PM. MORE HEAVY RAIN IS ALSO EXPECTED TO CONTINUE ACROSS EASTERN CHEROKEE COUNTY. S QUINN
Special weather statement, Jun 12, 4:50 PM CDT, 30 minutes before
IAZ013-020-021-031-032-043-NEZ094>096-SDZ066-122230- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX CITY IA 449 PM CDT SAT JUN 12 1993 ...SCATTERED STRONG THUNDERSTORMS WILL CONTINUE LATE THIS AFTERNOON... AT 445 PM CDT A STRONG THUNDERSTORM WAS 25 MILES SOUTH OF SIOUX CITY... OR WEST OF WHITING IOWA. MOVEMENT WAS NORTHEAST AT 25 MILES AN HOUR. THIS STORM WILL PRODUCE HEAVY RAIN...DANGEROUS LIGHTNING AND SMALL HAIL AS IT MOVES THROUGH WHITING...SLOAN AND HORNICK IOWA AROUND 515 PM. OTHER STRONG THUNDERSTORMS PRODUCING HEAVY RAIN ARE EXPECTED TO MOVE THROUGH BLENCOE AND ONAWA IOWA AROUND 530 PM. MORE HEAVY RAIN IS ALSO EXPECTED TO CONTINUE ACROSS EASTERN CHEROKEE COUNTY. S QUINN
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.