Alert archive / Iowa / Flash Flood Warnings in 2008
Flash Flood Warning 3, NWS La Crosse, WI
NWS La Crosse, WI issued this flash flood warning at Apr 25, 2008, 5:19 AM CDT for Chickasaw 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
- Apr 25, 2008, 5:19 AM CDT (10:19 UTC)
- Expired
- Apr 25, 2008, 8:15 AM CDT
- In force
- 3 hr
- Issued by
- NWS La Crosse, WI
- Area
- Storm-based polygon
- Flood severity
- None
County Chickasaw County, IA
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 25, 8:00 AM CDT | FLASH FLOOD | Fredericksburg, IA | AREA HIT HARD WITH WATER. SIX COUNTY ROADS WASHED OUT FROM ESTIMATED 5 TO 6 INCHES OF RAIN. ONE CAR STUCK IN HIGH WATER EARLIER ALONG BREMER-CHICKASAW COUNTY LINE. |
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, 10.3 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
- 158 J/kg
- Mixed-layer CIN
- -16 J/kg
- Mixed-layer LCL
- 495 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 226 m²/s²
- 0-3 km storm-relative helicity
- 289 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGUS53 KARX 251021 FFWARX IAC037-251315- /O.NEW.KARX.FF.W.0003.080425T1019Z-080425T1315Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE LA CROSSE WI 519 AM CDT FRI APR 25 2008 THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A * FLASH FLOOD WARNING FOR... CHICKASAW COUNTY IN NORTHEAST IOWA * UNTIL 815 AM CDT * AT 519 AM CDT...NATIONAL WEATHER SERVICE RADAR DETECTED THUNDERSTORMS PRODUCING HEAVY RAIN MOVING INTO CHICKASAW COUNTY. THESE THUNDERSTORMS ARE CAPABLE OF PRODUCING 1 INCH OF RAIN PER HOUR...ON SOILS ALREADY SATURATED FROM RECENT RAINS. * SOME LOCATIONS THAT MAY BE AFFECTED INCLUDE...FREDERICKSBURG... IONIA...LAWLER...NASHUA...NEW HAMPTON...COUNTY ROADS B 28 AND V 18 AND HIGHWAY 63 AND COUNTY B 22. A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IMMINENT. IF YOU ARE IN THE WARNED AREA MOVE TO HIGHER GROUND IMMEDIATELY. DO NOT ATTEMPT TO CROSS FLOODED ROADWAYS BY FOOT OR AUTOMOBILE. REMEMBER...TURN AROUND DONT DROWN. MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROAD. TWO FEET OF RUSHING WATER CAN CARRY AWAY MOST VEHICLES INCLUDING SPORT UTILITY VEHICLES AND PICKUPS. REMEMBER...TURN AROUND DONT DROWN. LAT...LON 4291 9256 4320 9255 4320 9209 4292 9208 $$ RRS
2 follow-up statements
000 WGUS73 KARX 251122 FFSARX FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE LA CROSSE WI 622 AM CDT FRI APR 25 2008 IAC037-251315- /O.CON.KARX.FF.W.0003.000000T0000Z-080425T1315Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ CHICKASAW IA- 622 AM CDT FRI APR 25 2008 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 815 AM CDT FOR CHICKASAW COUNTY... AT 620 AM CDT...THUNDERSTORMS PRODUCING HEAVY RAIN WERE OCCURRING OVER MUCH OF THE WARNED AREA. LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO JERICO... LAWLER AND NEW HAMPTON AT 620 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED SLOW MOVING THUNDERSTORMS WITH HEAVY RAIN ACROSS THE WARNED AREA. LOCATIONS WITH THE GREATEST RISK OF FLASH FLOODING INCLUDE NEW HAMPTON...JERICO...NASHUA...LAWLER...IONIA AND FREDERICKSBURG. IF YOU ARE IN THE WARNED AREA MOVE TO HIGHER GROUND IMMEDIATELY. DO NOT ATTEMPT TO CROSS FLOODED ROADWAYS BY FOOT OR AUTOMOBILE. REMEMBER...TURN AROUND DONT DROWN. MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROAD. TWO FEET OF RUSHING WATER CAN CARRY AWAY MOST VEHICLES INCLUDING SPORT UTILITY VEHICLES AND PICKUPS. REMEMBER...TURN AROUND DONT DROWN. LAT...LON 4291 9256 4320 9255 4320 9209 4292 9208 TIME...MOT...LOC 1122Z 180DEG 0KT 4306 9232 $$ RRS
000 WGUS73 KARX 251309 FFSARX FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE LA CROSSE WI 809 AM CDT FRI APR 25 2008 IAC037-251320- /O.EXP.KARX.FF.W.0003.000000T0000Z-080425T1315Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ CHICKASAW IA- 809 AM CDT FRI APR 25 2008 ...THE FLASH FLOOD WARNING WILL EXPIRE AT 815 AM CDT FOR CHICKASAW COUNTY... THE THREAT FOR FLASH FLOODING HAS DIMINISHED ACROSS THE WARNED AREA AS HEAVY RAIN FROM THIS MORNING MOVES OFF TO THE EAST. THEREFORE...THE FLASH FLOOD WARNING WILL BE ALLOWED TO EXPIRE. THERE WILL CERTAINLY BE SOME PONDING OF WATER THIS MORNING AND COULD BE SOME ROADS CLOSED. DO NOT DRIVE THROUGH ANY HIGH WATER. FIND A DIFFERENT ROUTE. LAT...LON 4291 9256 4320 9255 4320 9209 4292 9208 TIME...MOT...LOC 1307Z 180DEG 0KT 4306 9232 $$ SHEA
The office that day
Everything else NWS La Crosse, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 24, 9:00 PM CDT | Flood Watch | ARX | Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more | 21 hr |
| Apr 24, 11:01 PM CDT | Flash Flood Warning | ARX | Clayton, Fayette | 4 hr |
| Apr 25, 2:55 AM CDT | Areal Flood Warning | ARX | Clayton, Fayette | 6 hr |
| Apr 25, 6:41 AM CDT | Areal Flood Advisory | ARX | Allamakee, Winneshiek | 2 hr |
| Apr 25, 6:53 AM CDT | River Flood Warning | ARX | Clayton | 5 days |
| Apr 25, 9:00 AM CDT | Areal Flood Warning | ARX | Chickasaw, Clayton, Fayette | 6 hr |
| Apr 25, 9:55 AM CDT | River Flood Warning | ARX | Clayton | 4 days |
| Apr 25, 11:40 AM CDT | River Flood Warning | ARX | Allamakee | 31 hr |
| Apr 25, 2:34 PM CDT | Severe Thunderstorm Warning | ARX | Clayton | 56 min |
| Apr 25, 2:51 PM CDT | Areal Flood Warning | ARX | Clayton | 6 hr |
Nearby
Flash Flood Warnings in Iowa, 2008Every flash flood warning in 2008
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.