Alert archive / Iowa / Flash Flood Warnings in 2004
Flash Flood Warning 36, NWS Des Moines, IA
NWS Des Moines, IA issued this flash flood warning at Jun 16, 2004, 1:17 PM CDT for Calhoun County, Iowa. It was in force for 3 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
- Jun 16, 2004, 1:17 PM CDT (18:17 UTC)
- Expired
- Jun 16, 2004, 4:30 PM CDT
- In force
- 3 hr
- Issued by
- NWS Des Moines, IA
- Area
- Counties, with a storm outline in the text
County Calhoun County, IA
The radar
The Des Moines radar (KDMX), 106 km from the middle of the area, began a volume at 18:18 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 |
|---|---|---|---|
| Jun 16, 1:52 PM CDT | FLASH FLOOD | Rockwell City, IA | NUMEROUS COUNTY ROADS FLOODED. HIGHWAY 20 EAST OF ROCKWELL CITY FLOODING WITH WATER RUNNING OVER ROAD. |
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 12:00Z, 6.3 hours before the alert went out and 190 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
- 338 J/kg
- Mixed-layer CIN
- -410 J/kg
- Mixed-layer LCL
- 1794 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- -26 m²/s²
- 0-3 km storm-relative helicity
- 71 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 161818 FFWDMX IAC025-172130- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE DES MOINES IA 117 PM CDT WED JUN 16 2004 THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A * FLASH FLOOD WARNING FOR... CALHOUN COUNTY IN WEST CENTRAL IOWA * UNTIL 430 PM * AT 113 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THUNDERSTORMS WITH FLASH FLOOD PRODUCING RAINS IN THE WARNING AREA. * THUNDERSTORMS ARE CONTINUOUSLY REDEVELOPING...RESULTING IN EXCESSIVE RAINFALL. RAINFALL RATES MAY EXCEED 2 INCHES PER HOUR. ROCKWELL CITY REPORTED 0.84 INCHES IN THE PAST 15 MINUTES. THIS WILL PRODUCE FLASH FLOODING ALONG THE CAMP CREEK AND OTHER TRIBUTARIES AND SMALLER STREAMS. OTHER WARNING LOCATIONS INCLUDE... JOLLEY...KNIERIM...LAKE CITY...LOHRVILLE...MANSON...POMEROY... RINARD...ROCKWELL CITY...ROCKWELL CITY MUNICIPAL AIRPORT AND YETTER FLASH FLOODS OCCUR QUICKLY...MOVE TO HIGHER GROUND. AVOID WATER COVERED ROADS...THE ROAD MAY BE WASHED OUT. LESS THAN ONE FOOT OF FAST FLOWING WATER CAN SWEEP AN AUTOMOBILE OFF THE ROAD. LAT...LON 4256 9447 4221 9442 4221 9486 4255 9485 $$ SMALL
3 follow-up statements
000 WGUS73 KDMX 161901 FFSDMX IAC025-162130- FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 200 PM CDT WED JUN 16 2004 ...A FLASH FLOOD WARNING CONTINUES FOR CALHOUN COUNTY UNTIL 430 PM... AT 152 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR REPORTED THUNDERSTORMS WITH FLASH FLOOD PRODUCING RAINS OVER KNIERIM...OR ABOUT 14 MILES SOUTHWEST OF FORT DODGE...MOVING EAST AT 25 MPH. OTHER MODERATE TO OCCASIONALLY HEAVY RAINS WERE OCCURRING FARTHER EAST ACROSS THE COUNTY. THUNDERSTORMS ARE CONTINUOUSLY REDEVELOPING OVER THE WARNING AREA...RESULTING IN EXCESSIVE RAINFALL. RAINFALL RATES OVER 2 INCHES PER HOUR CONTINUE TO AFFECT THE COUNTY. THIS WILL PRODUCE FLASH FLOODING ALONG CAMP CREEK...THE NORTH RACCOON RIVER...PRAIRIE CREEK...AND THEIR TRIBUTARIES. AT 155 PM...THE CALHOUN COUNTY SHERIFF REPORTED WATER OVER SEVERAL COUNTY ROADS...AND HIGHWAY 20 EAST OF ROCKWELL CITY. OVER 3 INCHES OF RAIN HAS FALLEN 5 MILES EAST OF JOLLEY. DOPPLER RADAR PRECIPITATION ESTIMATES SHOW THAT OVER 4 INCHES OF RAIN MAY HAVE FALLEN IN WESTERN PORTIONS OF THE COUNTY. FLASH FLOODS OCCUR QUICKLY...MOVE TO HIGHER GROUND. AVOID WATER COVERED ROADS...THE ROAD MAY BE WASHED OUT. LESS THAN ONE FOOT OF FAST FLOWING WATER CAN SWEEP AN AUTOMOBILE OFF THE ROAD. LAT...LON 4255 9486 4222 9485 4222 9443 4256 9448 $$ SMALL
000 WGUS73 KDMX 162005 FFSDMX IAC025-161-162130- FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 307 PM CDT WED JUN 16 2004 ...A FLASH FLOOD WARNING CONTINUES FOR SAC UNTIL 330 PM... ...A FLASH FLOOD WARNING CONTINUES FOR CALHOUN COUNTY UNTIL 430 PM... AT 300 PM...THUNDERSTORMS CAPABLE OF PRODUCING FLASH FLOODING HAD MOVED EAST OF SAC AND CALHOUN COUNTY. A FEW SHOWERS WILL CONTINUE THROUGH 5 PM...BUT ADDITIONAL HEAVY RAINFALL IS NOT EXPECTED. NUMEROUS COUNTY ROADS WERE FLOODED EARLY THIS AFTERNOON. THE WATER SHOULD RECEDE LATE THIS AFTERNOON AND EXPECT THE FLASH FLOODING TO SLOWLY DIMINISH. WATER OVER AREA ROADS WILL CONTINUE TO BE DANGEROUS. DO NOT DRIVE INTO FLOODED AREAS. AVOID WATER COVERED ROADS...THE ROAD MAY BE WASHED OUT. LESS THAN ONE FOOT OF FAST FLOWING WATER CAN SWEEP AN AUTOMOBILE OFF THE ROAD. LAT...LON 4255 9486 4222 9485 4222 9443 4256 9448 $$ JOHNSON
000 WGUS73 KDMX 162009 FFSDMX IAC025-161-162130- FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 310 PM CDT WED JUN 16 2004 ...THE FLASH FLOOD WARNING FOR SAC COUNTY WILL EXPIRE AT 315 PM... ...A FLASH FLOOD WARNING CONTINUES FOR CALHOUN COUNTY UNTIL 430 PM... AT 310 PM...THUNDERSTORMS CAPABLE OF PRODUCING FLASH FLOODING HAD MOVED EAST OF SAC AND CALHOUN COUNTY. A FEW SHOWERS WILL CONTINUE THROUGH 5 PM...BUT ADDITIONAL HEAVY RAINFALL IS NOT EXPECTED. NUMEROUS COUNTY ROADS WERE FLOODED EARLY THIS AFTERNOON. THE WATER SHOULD RECEDE LATE THIS AFTERNOON AND EXPECT THE FLASH FLOODING TO SLOWLY DIMINISH. WATER OVER AREA ROADS WILL CONTINUE TO BE DANGEROUS. DO NOT DRIVE INTO FLOODED AREAS. AVOID WATER COVERED ROADS...THE ROAD MAY BE WASHED OUT. LESS THAN ONE FOOT OF FAST FLOWING WATER CAN SWEEP AN AUTOMOBILE OFF THE ROAD. LAT...LON 4255 9486 4222 9485 4222 9443 4256 9448 $$ JOHNSON
The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 16, 10:59 AM CDT | Tornado Warning | DMX | Crawford | 31 min |
| Jun 16, 11:07 AM CDT | Severe Thunderstorm Warning | DMX | Sac | 38 min |
| Jun 16, 12:19 PM CDT | Flash Flood Warning | DMX | Sac | 3 hr |
| Jun 16, 12:28 PM CDT | Severe Thunderstorm Warning | DMX | Sac | 47 min |
| Jun 16, 12:30 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun | 60 min |
| Jun 16, 1:01 PM CDT | Tornado Warning | DMX | Calhoun | 44 min |
| Jun 16, 1:23 PM CDT | Severe Thunderstorm Warning | DMX | Polk | 52 min |
| Jun 16, 1:31 PM CDT | Severe Thunderstorm Warning | DMX | Webster | 59 min |
| Jun 16, 1:38 PM CDT | Tornado Warning | DMX | Webster | 57 min |
| Jun 16, 1:49 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun | 41 min |
| Jun 16, 2:29 PM CDT | Severe Thunderstorm Warning | DMX | Humboldt | 46 min |
| Jun 16, 2:35 PM CDT | Severe Thunderstorm Warning | DMX | Webster | 40 min |
| Jun 16, 3:10 PM CDT | Severe Thunderstorm Warning | DMX | Hamilton, Wright | 50 min |
| Jun 16, 3:48 PM CDT | Flash Flood Warning | DMX | Cerro Gordo | 4 hr |
| Jun 16, 3:58 PM CDT | Severe Thunderstorm Warning | DMX | Franklin | 32 min |
| Jun 16, 4:27 PM CDT | Severe Thunderstorm Warning | DMX | Jasper | 33 min |
| Jun 16, 5:24 PM CDT | Severe Thunderstorm Warning | DMX | Decatur | 56 min |
Nearby
Flash Flood Warnings in Iowa, 2004Every flash flood warning in 2004
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.