Alert archive / Iowa / Flash Flood Warnings in 2007
Flash Flood Warning 9, NWS Des Moines, IA
NWS Des Moines, IA issued this flash flood warning at May 6, 2007, 3:16 AM CDT for Cass County, Iowa. It was in force for 3 hr. 6 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- May 6, 2007, 3:16 AM CDT (08:16 UTC)
- Expired
- May 6, 2007, 6:15 AM CDT
- In force
- 3 hr
- Issued by
- NWS Des Moines, IA
- Area
- Whole counties
County Cass County, IA
The radar
The Des Moines radar (KDMX), 110 km from the middle of the area, began a volume at 08:16 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 6, 3:42 AM CDT | FLASH FLOOD | Atlantic, IA | HIGHWAY 6 THROUGH ATLANTIC HAS WATER RUNNING 1 TO 1 1/2 FOOT DEEP IN PLACES. |
| May 6, 3:48 AM CDT | FLASH FLOOD | 3 W Cumberland, IA | WATER OVER THE ROAD ON QUINCY ROAD. DITCHES ARE FULL. |
| May 6, 3:55 AM CDT | FLASH FLOOD | 3 S Atlantic, IA | HIGHWAY 6 SOUTH OF ATLANTIC TO ATLANTIC RUNNING WATER CURB TO CURB. IN SOME LOCATIONS WATER OVER ONE FOOT DEEP ON HIGHWAY. |
| May 6, 3:55 AM CDT | FLASH FLOOD | 3 W Cumberland, IA | WATER RUNNING OVER THE HIGHWAY |
| May 6, 4:08 AM CDT | FLASH FLOOD | Atlantic, IA | FLASH FLOODING AND WATER OVER MOST ROADS IN TOWN. |
| May 6, 5:15 AM CDT | FLASH FLOOD | Griswold, IA | WATER OVER NUMEROUS ROADS THROUGHOUT GRISWOLD. PEOPLE WERE BEING RESCUED FROM THE HIGH WATER. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Omaha, NE (KOAX), launched 00:00Z, 8.3 hours before the alert went out and 120 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
- 2431 J/kg
- Mixed-layer CIN
- -8 J/kg
- Mixed-layer LCL
- 1133 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 22 m²/s²
- 0-3 km storm-relative helicity
- 67 m²/s²
- Significant tornado parameter
- 0.6
- Supercell composite
- 7.3
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGUS53 KDMX 060816 FFWDMX IAC029-061115- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE DES MOINES IA 316 AM CDT SUN MAY 6 2007 THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A * FLASH FLOOD WARNING FOR... CASS COUNTY IN SOUTHWEST IOWA... * UNTIL 615 AM CDT... * AT 311 AM CDT...TRAINED WEATHER SPOTTERS REPORTED FLASH FLOODING FROM A THUNDERSTORM OVER THE WARNED AREA. * LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO ATLANTIC. EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE BANKS OF CREEKS AND STREAMS. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODING. IF FLASH 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. LAT...LON 4118 9510 4119 9476 4150 9473 4151 9505 $$ FORSTER
3 follow-up statements
000 WGUS73 KDMX 060851 FFSDMX FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 344 AM CDT SUN MAY 6 2007 ...HEAVY RAINS CAUSING PROBLEMS... IAC029-061115- CASS IA- 344 AM CDT SUN MAY 6 2007 ...FLASH FLOOD WARNING REMAINS IN EFFECT FOR CASS COUNTY UNTIL 615 AM CDT... AT 342 AM CDT...WEATHER SPOTTERS REPORTED THAT EXCESSIVE RAINFALL WAS PRODUCING FLASH FLOODING IN THE COUNTY WITH WATER IN SOME LOCATIONS OVER A FOOT DEEP WHILE IN OTHER LOCATIONS RUNNING WATER WAS FROM CURB TO CURB OCCURRING ON HIGHWAY 6 FROM SOUTH OF ATLANTIC INTO ATLANTIC. RECENT REPORT HAS WATER RUNNING OVER THE ROAD 3 MILES WEST OF CUMBERLAND ON QUINCY AVENUE. LAT...LON 4118 9510 4119 9476 4150 9473 4151 9505 $$ FORSTER
000 WGUS73 KDMX 061017 FFSDMX FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 516 AM CDT SUN MAY 6 2007 HEAVY RAINS IN CASS COUNTY IOWA CONTINUE TO CAUSE PROBLEMS WITH FLOODING. FLOODING WAS REPORTED AT MANY LOCATIONS IN CASS COUNTY. IAC029-061115- CASS IA- 516 AM CDT SUN MAY 6 2007 ...FLASH FLOOD WARNING REMAINS IN EFFECT FOR CASS COUNTY UNTIL 615 AM CDT... 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. LAT...LON 4118 9510 4119 9476 4150 9473 4151 9505 $$ BAKER
000 WGUS73 KDMX 061053 FFSDMX FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 552 AM CDT SUN MAY 6 2007 IAC029-061115- CASS IA- 552 AM CDT SUN MAY 6 2007 ...FLASH FLOOD WARNING REMAINS IN EFFECT FOR CASS COUNTY UNTIL 615 AM CDT... AT 548 AM CDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED AN AREA OF VERY HEAVY RAINFALL ACROSS THE WARNED AREA. DOPPLER RADAR ESTIMATED THAT OVER 4 INCHES OF RAIN HAD FALLEN ACROSS CASS COUNTY. HEAVY RAIN CONTINUES TO FALL ACROSS THE WARNED AREA. RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...ATLANTIC. FLOOD WATERS ARE MOVING DOWN THE EAST FORK NISHNABOTNA RIVER NEAR ATLANTIC. THE FLOOD CREST IS EXPECTED TO REACH NEAR 20 FEET BY MIDDAY. REPORT FLOODING TO THE NEAREST LAW ENFORCEMENT AGENCY SO THAT THEY MAY TAKE APPROPRIATE ACTION TO CLOSE FLOODED ROADWAYS. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN DES MOINES. LAT...LON 4118 9510 4119 9476 4150 9473 4151 9505 $$ BAKER
The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 5, 9:03 PM CDT | Severe Thunderstorm Warning | DMX | Cass | 42 min |
| May 5, 9:14 PM CDT | Tornado Warning | DMX | Cass | 46 min |
| May 6, 2:39 AM CDT | Severe Thunderstorm Warning | DMX | Cass | 36 min |
| May 6, 2:45 AM CDT | Tornado Warning | DMX | Cass | 30 min |
| May 6, 3:07 AM CDT | Tornado Warning | DMX | Audubon | 23 min |
| May 6, 3:15 AM CDT | Severe Thunderstorm Warning | DMX | Cass | 15 min |
| May 6, 3:19 AM CDT | Flash Flood Watch | DMX | Adair, Adams, Appanoose, Audubon, Boone, Calhoun and 36 more | 28 hr |
| May 6, 3:31 AM CDT | Severe Thunderstorm Warning | DMX | Audubon | 28 min |
| May 6, 3:55 AM CDT | Severe Thunderstorm Warning | DMX | Adams, Ringgold, Taylor, Union | 35 min |
| May 6, 4:06 AM CDT | Flash Flood Warning | DMX | Audubon | 3 hr |
| May 6, 4:22 AM CDT | Severe Thunderstorm Warning | DMX | Adair, Clarke, Dallas, Guthrie, Madison, Ringgold and 1 more | 38 min |
| May 6, 4:47 AM CDT | Severe Thunderstorm Warning | DMX | Greene | 28 min |
| May 6, 5:00 AM CDT | Severe Thunderstorm Warning | DMX | Boone, Clarke, Dallas, Decatur, Greene, Madison and 3 more | 45 min |
| May 6, 5:08 AM CDT | Flash Flood Warning | DMX | Sac | 4 hr |
| May 6, 5:46 AM CDT | Severe Thunderstorm Warning | DMX | Boone, Clarke, Decatur, Jasper, Lucas, Marion and 4 more | 44 min |
| May 6, 6:05 AM CDT | Flash Flood Warning | DMX | Crawford | 4 hr |
| May 6, 6:13 AM CDT | Flash Flood Warning | DMX | Cass | 4 hr |
| May 6, 6:13 AM CDT | High Wind Warning | DMX | Black Hawk, Bremer, Butler, Cerro Gordo, Emmet, Franklin and 12 more | 6 hr |
| May 6, 6:35 AM CDT | Severe Thunderstorm Warning | DMX | Appanoose, Jasper, Lucas, Marion, Monroe, Wayne | 40 min |
| May 6, 6:45 AM CDT | Flash Flood Warning | DMX | Audubon | 3 hr |
| May 6, 7:25 AM CDT | Flash Flood Warning | DMX | Audubon | 3 hr |
| May 6, 7:30 AM CDT | Flash Flood Warning | DMX | Crawford | 3 hr |
| May 6, 7:34 AM CDT | Flash Flood Warning | DMX | Sac | 116 min |
Nearby
Flash Flood Warnings in Iowa, 2007Every flash flood warning in 2007
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.