Alert archive / Iowa / Flash Flood Warnings in 2005
Flash Flood Warning 7, NWS Des Moines, IA
NWS Des Moines, IA issued this flash flood warning at May 12, 2005, 5:22 PM CDT for Cass County, Iowa. It was in force for 6 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- May 12, 2005, 5:22 PM CDT (22:22 UTC)
- Expired
- May 12, 2005, 11:15 PM CDT
- In force
- 6 hr
- Issued by
- NWS Des Moines, IA
- Area
- Counties, with a storm outline in the text
County Cass County, IA
The radar
The Des Moines radar (KDMX), 106 km from the middle of the area, began a volume at 22:23 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Topeka, KS (KTOP), launched 12:00Z, 10.4 hours before the alert went out and 271 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
- 47 J/kg
- Mixed-layer CIN
- -239 J/kg
- Mixed-layer LCL
- 1153 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 418 m²/s²
- 0-3 km storm-relative helicity
- 395 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGUS53 KDMX 122226 FFWDMX IAC029-130415- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE DES MOINES IA 522 PM CDT THU MAY 12 2005 THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A * FLASH FLOOD WARNING FOR... CASS COUNTY IN SOUTHWEST IOWA. * UNTIL 1115 PM CDT. * AT 518 PM CDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WESTERN PORTION OF CASS COUNTY. DOPPLER RADAR ESTIMATED ONE AND ONE HALF TO TWO INCHES OF RAIN HAS FALLEN OVER THE PAST HOUR. * SLOW MOVING THUNDERSTORMS ARE PRODUCING TORRENTIAL RAINFALL IN THE WARNED AREA. RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...ATLANTIC...GRISWOLD...ANITA...ANITA MUNICIPAL AIRPORT... ATLANTIC MUNICIPAL AIRPORT...CUMBERLAND...LEWIS...MARNE...MASSENA AND WIOTA. PERSONS IN ATLANTIC AND THE WESTERN PORTIONS OF THE COUNTY SHOULD BE AWARE OF SIGNIFICANT PONDING IN TOWN AND RAPID RISES ON LOCAL CREEKS AND STEAMS. ALSO HIGHWAY 48 NORTH OF GRISWALD IS IN DANGER OF BECOMING SUBMERGED. A FLASH FLOODING WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING. IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY. RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY AUTOMOBILE. LAT...LON 4150 9472 4118 9473 4118 9517 4149 9516 $$ DONAVON
4 follow-up statements
000 WGUS73 KDMX 122344 FFSDMX FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 639 PM CDT THU MAY 12 2005 IAC029-130415- CASS IA- 639 PM CDT THU MAY 12 2005 ...FLASH FLOOD WARNING CONTINUES FOR CASS COUNTY UNTIL 1115 PM CDT... AT 636 PM CDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED AN AREA OF VERY HEAVY RAINFALL HAS FALLEN ACROSS THE WARNED AREA. DOPPLER RADAR ESTIMATED THAT OVER TWO INCHES OF RAIN HAS FALLEN ACROSS THE WESTERN HALF OF THE COUNTY HEAVY RAIN HAS MOVED TO THE EAST OF THE WARNED AREA...HOWEVER...RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLOODING TO OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...ATLANTIC...GRISWOLD...ANITA...ANITA MUNICIPAL AIRPORT...ATLANTIC MUNICIPAL AIRPORT...CUMBERLAND...LEWIS...MARNE...MASSENA AND WIOTA. THE CASS COUNTY SHERIFF OFFICE REPORTED EXTENSIVE LOW LAND FLOODING ACROSS THE WESTERN ONE THIRD OF THE COUNTY. IN ADDITION...A DRAINAGE PIPE HAS BURST NORTH OF MARNE SPILL WATER OVER THE ROAD ALONG WITH ONE FOOT OF MUD. $$ DONAVON
000 WGUS73 KDMX 130046 FFSDMX FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 744 PM CDT THU MAY 12 2005 IAC029-130415- CASS IA- 744 PM CDT THU MAY 12 2005 ...FLASH FLOOD WARNING CONTINUES FOR CASS COUNTY UNTIL 1115 PM CDT... AT 740 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED AN AREA OF VERY HEAVY RAINFALL HAS FALLEN ACROSS THE WARNED AREA...ESPECIALLY THE WESTERN PORTION OF THE COUNTY. DOPPLER RADAR ESTIMATED THAT 1.5 TO 2 INCHES OF RAIN FELL EARLIER THIS EVENING. LIGHT TO MODERATE RAIN CONTINUES TO FALL ACROSS THE WARNED AREA. RUNOFF FROM THE PREVIOUS EXCESSIVE RAINFALL WILL CAUSE FLOODING TO OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...ATLANTIC...GRISWOLD...ANITA...ANITA MUNICIPAL AIRPORT...ATLANTIC MUNICIPAL AIRPORT...CUMBERLAND...LEWIS...MARNE...MASSENA AND WIOTA. DO NOT UNDERESTIMATE THE POWER OF FLOOD WATERS. ONLY A FEW INCHES OF RAPIDLY FLOWING WATER CAN QUICKLY CARRY AWAY YOUR VEHICLE. REPORT FLOODING TO THE NEAREST LAW ENFORCEMENT AGENCY SO THAT THEY MAY TAKE APPROPRIATE ACTION TO CLOSE FLOODED ROADWAYS. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN DES MOINES. $$ DONAVON
000 WGUS73 KDMX 130156 FFSDMX FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 854 PM CDT THU MAY 12 2005 IAC029-130415- CASS IA- 854 PM CDT THU MAY 12 2005 ...FLASH FLOOD WARNING CONTINUES FOR CASS COUNTY UNTIL 1115 PM CDT... AT 853 PM CDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED THAT LOW FLOODING WAS OCCURRING ACROSS THE WESTERN ONE THIRD OF THE COUNTY. RAIN HAS BECOME LIGHT OVER THE AREA HOWEVER ADDITIONAL THUNDERSTORMS HAVE BEGAN TO DEVELOP TO THE WEST AND MAY MOVE INTO THE COUNTY LATER THIS EVENING AND OVERNIGHT. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODING. IF FLOODING IS OBSERVED ACT QUICKLY. MOVE UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING. $$ DONAVON
000 WGUS73 KDMX 130308 FFSDMX FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 1006 PM CDT THU MAY 12 2005 IAC029-130316- CASS IA- 1006 PM CDT THU MAY 12 2005 ...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR CASS COUNTY HAS BEEN CANCELLED... EXCESS RUNOFF FROM HEAVY RAIN HAS ENDED OVER THE WARNED AREA. STREAMS AND CREEKS IN THE WARNED AREA HAVE RECEDED OR WERE BEGINNING TO RECEDE...ENDING THE FLOOD THREAT. IF FLOODING HAS BEEN OBSERVED... PLEASE REPORT IT TO YOUR LOCAL LAW ENFORCEMENT AGENCY. $$ COGIL
The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 12, 5:38 PM CDT | Severe Thunderstorm Warning | DMX | Story | 61 min |
Nearby
Flash Flood Warnings in Iowa, 2005Every flash flood warning in 2005
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; radar from the NEXRAD Level II archive.