Alert archive / Iowa / Flash Flood Warnings in 2012
Flash Flood Warning 6, NWS Des Moines, IA
NWS Des Moines, IA issued this flash flood warning at May 3, 2012, 3:48 PM CDT for Kossuth County, Iowa. It was in force for 4 hr. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- May 3, 2012, 3:48 PM CDT (20:48 UTC)
- Expired
- May 3, 2012, 8:07 PM CDT
- In force
- 4 hr
- Issued by
- NWS Des Moines, IA
- Area
- Storm-based polygon
- Flood severity
- None
County Kossuth County, IA
The radar
The Des Moines radar (KDMX), 178 km from the middle of the area, began a volume at 20:49 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 3, 5:05 PM CDT | HEAVY RAIN 3.2 | 4 Ese Bancroft, IA | STORM TOTAL RAINFALL SINCE IT STARTED RAINING AROUND 2 PM. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Minneapolis, MN (KMPX), launched 12:00Z, 8.8 hours before the alert went out and 178 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
- 1755 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 521 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 27 m²/s²
- 0-3 km storm-relative helicity
- 33 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.3
The text
As transmitted, in the capitals the NWS used until 2016.
621 WGUS53 KDMX 032048 FFWDMX IAC109-040300- /O.NEW.KDMX.FF.W.0006.120503T2048Z-120504T0300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE DES MOINES IA 348 PM CDT THU MAY 3 2012 THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A * FLASH FLOOD WARNING FOR... NORTHERN KOSSUTH COUNTY IN NORTH CENTRAL IOWA... * UNTIL 1000 PM CDT * AT 347 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED AREA. RADAR ESTIMATED RAINFALL TOTALS OF 2 TO 4 INCHES ARE COMMON ACROSS THE AREA...WITH LOCALLY HIGHER AMOUNTS. * RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... BANCROFT. FLOODING HAS BEEN REPORTED IN THE TOWN OF BANCROFT WITH WATER IN ROADS AND FIELDS. PRECAUTIONARY/PREPAREDNESS ACTIONS... DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. TURN AROUND...DONT DROWN. A FLASH FLOOD 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 4320 9398 4319 9444 4345 9444 4346 9397 $$ AWB
2 follow-up statements
050 WGUS73 KDMX 032234 FFSDMX FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 534 PM CDT THU MAY 3 2012 IAC109-040300- /O.CON.KDMX.FF.W.0006.000000T0000Z-120504T0300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ KOSSUTH IA- 534 PM CDT THU MAY 3 2012 ...FLASH FLOOD WARNING REMAINS IN EFFECT FOR NORTHERN KOSSUTH COUNTY UNTIL 1000 PM CDT... AT 532 PM CDT...THUNDERSTORMS PRODUCING EXCESSIVE RAINFALL...RADAR ESTIMATED 2 TO 4 INCHES...HAVE MOVED EAST OF THE AREA...AND A FLASH FLOOD RISK WILL CONTINUE TO FOR AREAS DOWNSTREAM OF HEAVY RAINFALL. IN ADDITION...RAINFALL IS POSSIBLE THROUGHOUT THE EVENING HOURS.. SOME LOCATIONS THAT WILL EXPERIENCE FLASH FLOODING INCLUDE... BANCROFT. PRECAUTIONARY/PREPAREDNESS ACTIONS... DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY DEEPER THAN THEY APPEAR AND THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. TURN AROUND...DONT DROWN. A FLASH FLOOD WARNING MEANS THAT FLASH FLOODING IS IMMINENT OR OCCURRING. IF YOU ARE IN THE WARNING AREA...MOVE TO HIGHER GROUND IMMEDIATELY. RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY AUTOMOBILE. && LAT...LON 4320 9398 4319 9444 4345 9444 4346 9397 $$ AWB
476 WGUS73 KDMX 040107 FFSDMX FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 807 PM CDT THU MAY 3 2012 IAC109-040122- /O.CAN.KDMX.FF.W.0006.000000T0000Z-120504T0300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ KOSSUTH IA- 807 PM CDT THU MAY 3 2012 ...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR NORTHERN KOSSUTH COUNTY IS CANCELLED... EXCESS RUNOFF FROM HEAVY RAIN HAS ENDED OVER THE WARNED AREA. NO ADDITIONAL REPORTS OF FLOODING HAVE BEEN REPORTED. IF FLOODING HAS BEEN OBSERVED...PLEASE REPORT IT TO YOUR LOCAL LAW ENFORCEMENT AGENCY. LAT...LON 4320 9398 4319 9444 4345 9444 4346 9397 $$ COGIL
The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 3, 5:11 AM CDT | Severe Thunderstorm Warning | DMX | Butler, Cerro Gordo, Franklin | 47 min |
| May 3, 2:24 PM CDT | Severe Thunderstorm Warning | DMX | Kossuth | 21 min |
| May 3, 2:48 PM CDT | Severe Thunderstorm Warning | DMX | Kossuth | 42 min |
| May 3, 3:31 PM CDT | Severe Thunderstorm Warning | DMX | Hancock, Kossuth, Winnebago | 44 min |
| May 3, 4:03 PM CDT | Severe Thunderstorm Warning | DMX | Emmet, Kossuth | 42 min |
| May 3, 4:18 PM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo, Hancock, Winnebago, Worth | 42 min |
| May 3, 4:52 PM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo | 53 min |
| May 3, 5:06 PM CDT | Severe Thunderstorm Warning | DMX | Kossuth | 39 min |
| May 3, 6:13 PM CDT | Severe Thunderstorm Warning | DMX | Humboldt | 47 min |
| May 3, 6:57 PM CDT | Severe Thunderstorm Warning | DMX | Humboldt | 48 min |
Nearby
Flash Flood Warnings in Iowa, 2012Every flash flood warning in 2012
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.