Alert archive / Iowa / Flash Flood Warnings in 1993
Flash Flood Warning 16, NWS Des Moines, IA
NWS Des Moines, IA issued this flash flood warning at Jun 7, 1993, 8:37 PM CDT for Keokuk County, Iowa. It was in force for 2 hr.
The area
The counties it named.
The facts
- Issued
- Jun 7, 1993, 8:37 PM CDT (01:37 UTC)
- Expired
- Jun 7, 1993, 11:00 PM CDT
- In force
- 2 hr
- Issued by
- NWS Des Moines, IA
- Area
- Whole counties
County Keokuk County, IA
The nearest sounding before it
Omaha, NE (KOAX), launched 00:00Z, 1.6 hours before the alert went out and 350 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
- 378 J/kg
- Mixed-layer CIN
- -87 J/kg
- Mixed-layer LCL
- 1627 m above ground
- 0-6 km bulk shear
- 60 kt
- 0-1 km storm-relative helicity
- 91 m²/s²
- 0-3 km storm-relative helicity
- 192 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.6
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 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 7, 7:20 PM CDT, 1 hour 17 minutes before
IAZ020-031-043-SDZ066-08230- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 720 PM CDT MON JUN 7 1993 ...THE TORNADO WATCH IS NO LONGER IN EFFECT FOR EXTREME NORTHWEST IOWA... ...THE FLASH FLOOD WATCH HAS BEEN CANCELLED FOR EXTREME NORTHWEST IOWA... THE TORNADO AND FLASH FLOOD WATCHES THAT WERE IN EFFECT FOR EXTREME NORTHWEST IOWA HAVE BEEN CANCELLED. CITIES THAT ARE NO LONGER UNDER THE TORNADO AND FLASH FLOOD WATCHES INCLUDE SIOUX CITY AND LEMARS. SMITH . PETERSEN WWUS34KBIS ,
Special weather statement, Jun 7, 7:21 PM CDT, 1 hour 16 minutes before
IAZ020-031-043-SDZ066-08230- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 720 PM CDT MON JUN 7 1993 ...THE TORNADO WATCH IS NO LONGER IN EFFECT FOR EXTREME NORTHWEST IOWA... ...THE FLASH FLOOD WATCH HAS BEEN CANCELLED FOR EXTREME NORTHWEST IOWA... THE TORNADO AND FLASH FLOOD WATCHES THAT WERE IN EFFECT FOR EXTREME NORTHWEST IOWA HAVE BEEN CANCELLED. CITIES THAT ARE NO LONGER UNDER THE TORNADO AND FLASH FLOOD WATCHES INCLUDE S0IOUX CITY AND LEMARS. SMITH . PETERSEN
Special weather statement, Jun 7, 7:45 PM CDT, 52 minutes before
IAZ006-007-008-009-010-011-016-017-018-019-026-027-028-029-038- 039-040-080140- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WATERLOO IA 745 PM CDT MON JUN 7 1993 ...A TORNDADO WATCH IS IN EFFECT FOR NORTHEAST AND NORTH CENTRAL IOWA UNTIL 2 AM... AT 735PM A LINE OF STRONG THUNDERSTORMS WERE LOCATED FROM 10 MILES SOUTHEAST OF WATERLOO...TO 10 MILES NORTH OF OELWEIN. THESE STORMS WERE PRODUCING VERY HEAVY RAINS...DANGEROUS LIGHTNING...GUSTY WINDS... AND SMALL HAIL. MOVEMENT OF THESE STORMS WAS TO THE NORTHEAST AT 30 MILES AN HOUR AND SHOULD MOVE INTO THE INDEPENDENCE...AND OELWEIN AREAS BY 8PM. A TORNADO WATCH IS IN EFFECT FOR NORTHEAST AND NORTH CENTRAL IOWA UNTIL 2AM TUESDAY MORNING. ATMOSPHERIC CONDITIONS REMAIN FAVORABLE FOR SEVERE THUNDERSTORM DEVELOPMENT TONIGHT AND TORNADOES ARE POSSIBLE IN THE WATCH AREA. A FLASH FLOOD WATCH IS ALSO IN EFFECT FOR ALL OF NORTHEAST AND NORTH CENTRAL IOWA TONIGHT. THOSE PERSONS` IN NORTHEAST IOWA SHOULD STAY ALERT FOR RAPIDLY CHANGING WEATHER CONDITIONS AND STAYED TUNED TO YOUR TELEVISION... RADIO...OR NOAA WEATHER RADIO STATION FOR FURTHER UPDATES AND POSSIBLE WARNINGS. LINDENBERG
Special weather statement, Jun 7, 7:45 PM CDT, 52 minutes before
IAZ006-007-008-009-010-011-016-017-018-019-026-027-028-029-038- 039-040-080140- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WATERLOO IA 745 PM CDT MON JUN 7 1993 ...A TORNDADO WATCH IS IN EFFECT FOR NORTHEAST AND NORTH CENTRAL IOWA UNTIL 2 AM... AT 735PM A LINE OF STRONG THUNDERSTORMS WERE LOCATED FROM 10 MILES SOUTHEAST OF WATERLOO...TO 10 MILES NORTH OF OELWEIN. THESE STORMS WERE PRODUCING VERY HEAVY RAINS...DANGEROUS LIGHTNING...GUSTY WINDS... AND SMALL HAIL. MOVEMENT OF THESE STORMS WAS TO THE NORTHEAST AT 30 MILES AN HOUR AND SHOULD MOVE INTO THE INDEPENDENCE...AND OELWEIN AREAS BY 8PM. A TORNADO WATCH IS IN EFFECT FOR NORTHEAST AND NORTH CENTRAL IOWA UNTIL 2AM TUESDAY MORNING. ATMOSPHERIC CONDITIONS REMAIN FAVORABLE FOR SEVERE THUNDERSTORM DEVELOPMENT TONIGHT AND TORNADOES ARE POSSIBLE IN THE WATCH AREA. A FLASH FLOOD WATCH IS ALSO IN EFFECT FOR ALL OF NORTHEAST AND NORTH CENTRAL IOWA TONIGHT. THOSE PERSONS IN NORTHEAST IOWA SHOULD STAY ALERT FOR RAPIDLY CHANGING WEATHER CONDITIONS AND STAYED TUNED TO YOUR TELEVISION... RADIO...OR NOAA WEATHER RADIO STATION FOR FURTHER UPDATES AND POSSIBLE WARNINGS. LINDENBERG
Special weather statement, Jun 7, 7:58 PM CDT, 39 minutes before
IAZALL-080140-
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE DES MOINES IA
758 PM CDT MON JUN 7 1993
...A TORNADO WATCH IS IN EFFECT FOR THE EASTERN TWO-THIRDS OF IOWA
UNTIL 2AM...
...A FLASH FLOOD WATCH IS IN EFFECT FOR ALL BUT EXTREME NORTHWEST
IOWA TONIGHT...
AT 730 PM CDT...AN AREA OF SHOWERS AND STRONG THUNDERSTORMS CONTINUED
OVER ABOUT THE SOUTHEASTERN HALF OF IOWA. THE SHOWERS AND STORMS
WERE GENERALLY SOUTH AND EAST OF A LINE FROM LAMONI TO WATERLOO TO
DECORAH. THE STRONGEST STORMS WERE LOCATED OVER SOUTH CENTRAL AND
SOUTHEASTERN IOWA IN MONROE AND APPANOOSE COUNTIES BETWEEN ALBIA AND
CENTERVILLE. DANGEROUS LIGHTNING...GUSTY WINDS AND HAIL ARE POSSIBLE
WITH THESE STORMS. OTHER STRONG STORMS WERE LOCATED IN EAST CENTRAL IOWA
NEAR CEDAR RAPIDS.
ANOTHER AREA OF STRONG THUNDERSTORMS WAS LOCATED IN NORTHWESTERN IOWA
ABOUT 10 MILES WEST OF SPENCER. THESE STORMS ARE ALSO CAPABLE OF
PRODUCING STRONG WINDS...DANGEROUS LIGHTNING AND HAIL.
MOVEMENT OF ALL THE SHOWERS AND THUNDERSTORMS WAS TO THE NORTHEAST AT
35 MILES AN HOUR.
PETERSEN/MARTINSpecial weather statement, Jun 7, 7:59 PM CDT, 38 minutes before
IAZALL-080140-
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE DES MOINES IA
758 PM CDT MON JUN 7 1993
...A TORNADO WATCH IS IN EFFECT FOR THE EASTERN TWO-THIRDS OF IOWA
UNTIL 2AM...
...A FLASH FLOOD WATCH IS IN EFFECT FOR ALL BUT EXTREME NORTHWEST
IOWA TONIGHT...
AT 730 PM CDT...AN AREA OF SHOWERS AND STRONG THUNDERSTORMS CONTINUED
OVER ABOUT THE SOUTHEASTERN HALF OF IOWA. THE SHOWERS AND STORMS
WERE GENERALLY SOUTH AND EAST OF A LINE FROM LAMONI TO WATERLOO TO
DECORAH. THE STRONGEST STORMS WERE LOCATED OVER SOUTH CENTRAL AND
SOUTHEASTERN IOWA IN MONROE AND APPANOOSE COUNTIES BETWEEN ALBIA AND
CENTERVILLE. DANGEROUS LIGHTNING...GUSTY WINDS AND HAIL ARE POSSIBLE
WITH THESE STORMS. OTHER STRONG STORMS WERE LOCATED IN EAST CENTRAL IOWA
NEAR CEDAR RAPIDS.
ANOTHER AREA OF STRONG THUNDERSTORMS WAS LOCATED IN NORTHWESTERN IOWA
ABOUT 10 MILES WEST OF SPENCER. THESE STORMS ARE ALSO CAPABLE OF
PRODUCING STRONG WINDS...DANGEROUS LIGHTNING AND HAIL.
MOVEMENT OF ALL THE SHOWERS AND THUNDERSTORMS WAS TO THE NORTHEAST AT
35 MILES AN HOUR.
PETERSEN/MARTINThe 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, 8:45 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, 11:52 AM CDT | Tornado Warning | DMX | Winneshiek | 38 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
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.