Alert archive / Iowa / Flash Flood Warnings in 2007
Flash Flood Warning 21, NWS Des Moines, IA
NWS Des Moines, IA issued this flash flood warning at May 7, 2007, 2:06 AM CDT for Marion County, Iowa. It took effect at May 7, 2007, 2:11 AM CDT. It was in force for 6 hr. 1 report 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 7, 2007, 2:06 AM CDT (07:06 UTC)
- In effect from
- May 7, 2007, 2:11 AM CDT
- Expired
- May 7, 2007, 8:00 AM CDT
- In force
- 6 hr
- Issued by
- NWS Des Moines, IA
- Area
- Whole counties
County Marion County, IA
The radar
The Des Moines radar (KDMX), 68 km from the middle of the area, began a volume at 07:09 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 7, 4:00 AM CDT | FLASH FLOOD | Knoxville, IA | NUMEROUS COUNTY ROADS THROUGHOUT COUNTY CLOSED FROM FLASH FLOODING. TIME ESTIMATED. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Davenport, (KDVN), launched 00:00Z, 7.1 hours before the alert went out and 219 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2324 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 72 m²/s²
- 0-3 km storm-relative helicity
- 148 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 070711 FFWDMX IAC125-071300- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE DES MOINES IA 206 AM CDT MON MAY 7 2007 THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A * FLASH FLOOD WARNING FOR... MARION COUNTY IN SOUTH CENTRAL IOWA... * UNTIL 800 AM CDT... * AT 201 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED HEAVY RAIN FROM THUNDERSTORMS LIKELY TO CAUSE FLASH FLOODING OVER THE WARNED AREA. RADAR ESTIMATED THAT ONE TO ONE AND A HALF INCHES OF RAIN HAS FALLEN SINCE LAST EVENING IN AN AXIS SOUTHEAST OF A LINE FROM MELCHER-DALLAS TO KNOXVILLE. A PELLA RAIN GAGE REPORTED ONE INCH OF RAIN SINCE 1 AM...OR ONE INCH PER HOUR RAINFALL RATES. * THE HIGHEST FLASH FLOOD THREAT IS OVER THE SOUTHEAST HALF OF THE COUNTY...THOUGH FLOODING COULD OCCUR ANYWHERE. ADDITIONAL RAINFALL AMOUNTS OF ONE TO TWO INCHES ARE POSSIBLE IN THE WARNED AREA. 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 4117 9333 4117 9288 4151 9288 4150 9333 $$ KINNEY/MOYER
2 follow-up statements
000 WGUS73 KDMX 070816 FFSDMX FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 312 AM CDT MON MAY 7 2007 IAC125-071300- MARION IA- 312 AM CDT MON MAY 7 2007 ...FLASH FLOOD WARNING REMAINS IN EFFECT FOR MARION COUNTY UNTIL 800 AM CDT... AT 309 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED AN AREA OF VERY HEAVY RAINFALL HAD MOVED EAST OF THE WARNED AREA. HOWEVER...DOPPLER RADAR ESTIMATED THAT 1 TO 2 INCHES OF RAIN FELL THROUGH 230 AM CDT...JUST SOUTHEAST OF A LINE FROM MELCHER-DALLAS TO PELLA. ALTHOUGH THE HEAVIEST RAIN HAS ENDED FOR THE TIME BEING...RUNOFF FROM THE PREVIOUS RAINFALL WILL CAUSE FLASH FLOODING TO OCCUR...ESPECIALLY OVER THE SOUTHEAST HALF OF MARION COUNTY. AT 3 AM CDT...LAW ENFORCEMENT REPORTED CREEKS OUT OF THEIR BANKS. THE RISING WATER HAD NOT CAUSED ANY SIGNIFICANT FLOODING THROUGH 3 AM...BUT FLASH FLOODING IS LIKELY BEFORE DAY BREAK. ADDITIONAL HEAVY RAIN WILL MOVE INTO MARION COUNTY BEFORE SUN RISE...AND SOME LOCATIONS COULD RECEIVE AN ADDITIONAL 1 TO 2 INCHES. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODING. IF FLOODING IS OBSERVED...ACT QUICKLY. DO NOT ENTER THE WATER. TURN AROUND AND MOVE UP TO HIGHER GROUND. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING. REPORT FLOODING TO THE NEAREST LAW ENFORCEMENT AGENCY SO THAT THEY MAY TAKE APPROPRIATE ACTION TO CLOSE FLOODED ROADWAYS. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN DES MOINES. LAT...LON 4117 9333 4117 9288 4151 9288 4150 9333 $$ KINNEY
000 WGUS73 KDMX 071004 FFSDMX FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 502 AM CDT MON MAY 7 2007 ...HEAVY RAINS CONTINUE TO AFFECT THE COUNTY... IAC125-071300- MARION IA- 502 AM CDT MON MAY 7 2007 ...FLASH FLOOD WARNING REMAINS IN EFFECT FOR MARION COUNTY UNTIL 800 AM CDT... AT 459 AM CDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED THAT EXCESSIVE RAINFALL WAS PRODUCING FLASH FLOODING WITH SMALL CREEKS OUT OF THEIR BANKS AND SECONDARY ROADS WERE UNDERWATER. LAT...LON 4117 9333 4117 9288 4151 9288 4150 9333 $$ FORSTER
The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 6, 11:04 PM CDT | Flash Flood Warning | DMX | Clarke, Decatur, Ringgold, Taylor, Union | 6 hr |
| May 6, 11:08 PM CDT | Flash Flood Warning | DMX | Adams, Cass | 6 hr |
| May 6, 11:58 PM CDT | Flash Flood Warning | DMX | Lucas | 6 hr |
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.