Alert archive / Iowa / Flash Flood Watches in 2007
Flash Flood Watch 5, NWS La Crosse, WI
NWS La Crosse, WI issued this flash flood watch at Aug 18, 2007, 3:19 AM CDT for 8 counties in Iowa; 7 counties in Minnesota; 7 counties in Wisconsin. It took effect at Aug 18, 2007, 7:00 AM CDT. It was in force for 45 hr.
The area
The counties it named.
The facts
- Issued
- Aug 18, 2007, 3:19 AM CDT (08:19 UTC)
- In effect from
- Aug 18, 2007, 7:00 AM CDT
- Expired
- Aug 20, 2007, 4:00 AM CDT
- In force
- 45 hr
- Issued by
- NWS La Crosse, WI
- Flood severity
- None
All 22 counties
Allamakee County, IA, Chickasaw County, IA, Clayton County, IA, Fayette County, IA, Floyd County, IA, Howard County, IA, Mitchell County, IA, Winneshiek County, IA, Dodge County, MN, Fillmore County, MN, Houston County, MN, Mower County, MN, Olmsted County, MN, Wabasha County, MN, Winona County, MN, Buffalo County, WI, Crawford County, WI, Grant County, WI, La Crosse County, WI, Richland County, WI, Trempealeau County, WI, Vernon County, WI
The radar
The La Crosse radar (KARX), 57 km from the middle of the area, began a volume at 08:21 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.
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 8.3 hours before the alert went out and 204 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
- 2194 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- -17 m²/s²
- 0-3 km storm-relative helicity
- 53 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGUS63 KARX 180819 FFAARX URGENT - IMMEDIATE BROADCAST REQUESTED FLOOD WATCH NATIONAL WEATHER SERVICE LA CROSSE WI 319 AM CDT SAT AUG 18 2007 ...MORE HEAVY RAINS EXPECTED ACROSS THE AREA TODAY... .A NORTHWARD MOVING WARM FRONT WILL BE THE FOCAL POINT FOR MORE HEAVY RAINFALL TODAY. MOISTURE STREAMING NORTHWARD OVER THE BOUNDARY WILL LEAD TO WIDESPREAD RAINFALL ACROSS THE AREA. REPEATED ROUNDS OF SHOWERS AND THUNDERSTORMS OVER ALL THE ALL READY WET GROUND COULD LEAD TO FLASH FLOODING PROBLEMS. IAZ008>011-018-019-029-030-MNZ086>088-094>096-WIZ041-053>055-061- 181630- /O.NEW.KARX.FF.A.0005.070818T1200Z-070819T0000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ MITCHELL-HOWARD-WINNESHIEK-ALLAMAKEE-FLOYD-CHICKASAW-FAYETTE- CLAYTON-DODGE-OLMSTED-WINONA-MOWER-FILLMORE-HOUSTON-LA CROSSE- VERNON-CRAWFORD-RICHLAND-GRANT- INCLUDING THE CITIES OF...DECORAH...WAUKON...CHARLES CITY... OELWEIN...ROCHESTER...WINONA...AUSTIN...LA CROSSE...VIROQUA... PRAIRIE DU CHIEN...RICHLAND CENTER...PLATTEVILLE 319 AM CDT SAT AUG 18 2007 ...FLASH FLOOD WATCH IN EFFECT FROM 7 AM CDT THIS MORNING THROUGH THIS EVENING... THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A * FLASH FLOOD WATCH FOR PORTIONS OF IOWA...SOUTHEAST MINNESOTA AND WISCONSIN...INCLUDING THE FOLLOWING AREAS...IN IOWA... ALLAMAKEE...CHICKASAW...CLAYTON...FAYETTE...FLOYD...HOWARD... MITCHELL AND WINNESHIEK. IN SOUTHEAST MINNESOTA...DODGE... FILLMORE...HOUSTON...MOWER...OLMSTED AND WINONA. IN WISCONSIN...CRAWFORD...GRANT...LA CROSSE...RICHLAND AND VERNON. * FROM 7 AM CDT THIS MORNING THROUGH THIS EVENING * SEVERAL ROUNDS OF SHOWERS AND THUNDERSTORMS WILL PRODUCE LOCALLY HEAVY RAINFALL TODAY. WITH THE RECENT RAINS THE SOIL IS ALREADY WET AND ADDITIONAL HEAVY RAINFALL WILL LEAD TO THE POTENTIAL FOR FLASH FLOODING. * RUNOFF FROM THE HEAVY RAINS MAY LEAD TO FAST-FLOWING WATER OVER ROADS...PONDING OF WATER IN LOW LYING AREAS...AND SOIL EROSION OR MUD SLIDES IN HILLY TERRAIN. URBAN AREAS MAY ALSO EXPERIENCE CLOSED ROADS DUE TO ACCUMULATING WATER. A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION. YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION SHOULD FLASH FLOOD WARNINGS BE ISSUED. $$ RABERDING
9 follow-up statements
000 WGUS63 KARX 181612 FFAARX FLOOD WATCH NATIONAL WEATHER SERVICE LA CROSSE WI 1112 AM CDT SAT AUG 18 2007 ...HEAVY RAINS EXPECTED ACROSS THE AREA TODAY... .MOISTURE STREAMING NORTHWARD OVER A NEARLY STATIONARY FRONT IS EXPECTED TO BRING WIDESPREAD RAINFALL ACROSS THE AREA. RAINFALL RUNOFF FROM REPEATED ROUNDS OF SHOWERS AND THUNDERSTORMS OVER THE ALREADY WET GROUND COULD LEAD TO FLASH FLOODING PROBLEMS. IAZ008>011-018-019-029-030-MNZ086>088-094>096-WIZ041-053>055-061- 190000- /O.CON.KARX.FF.A.0005.000000T0000Z-070819T0000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ MITCHELL-HOWARD-WINNESHIEK-ALLAMAKEE-FLOYD-CHICKASAW-FAYETTE- CLAYTON-DODGE-OLMSTED-WINONA-MOWER-FILLMORE-HOUSTON-LA CROSSE- VERNON-CRAWFORD-RICHLAND-GRANT- INCLUDING THE CITIES OF...DECORAH...WAUKON...CHARLES CITY... OELWEIN...ROCHESTER...WINONA...AUSTIN...LA CROSSE...VIROQUA... PRAIRIE DU CHIEN...RICHLAND CENTER...PLATTEVILLE 1112 AM CDT SAT AUG 18 2007 ...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING... THE FLASH FLOOD WATCH CONTINUES FOR * PORTIONS OF IOWA...SOUTHEAST MINNESOTA AND WISCONSIN... INCLUDING THE FOLLOWING AREAS...IN IOWA...ALLAMAKEE... CHICKASAW...CLAYTON...FAYETTE...FLOYD...HOWARD...MITCHELL AND WINNESHIEK. IN SOUTHEAST MINNESOTA...DODGE...FILLMORE... HOUSTON...MOWER...OLMSTED AND WINONA. IN WISCONSIN... CRAWFORD...GRANT...LA CROSSE...RICHLAND AND VERNON. * UNTIL 7 PM CDT THIS EVENING * SEVERAL ROUNDS OF SHOWERS AND THUNDERSTORMS WILL PRODUCE LOCALLY HEAVY RAINFALL TODAY. WITH THE RECENT RAINS THE SOIL IS ALREADY WET AND ADDITIONAL HEAVY RAINFALL WILL LEAD TO THE POTENTIAL FOR FLASH FLOODING. * RUNOFF FROM THE HEAVY RAINS MAY LEAD TO FAST-FLOWING WATER OVER ROADS...PONDING OF WATER IN LOW LYING AREAS...AND SOIL EROSION OR MUD SLIDES IN HILLY TERRAIN. URBAN AREAS MAY ALSO EXPERIENCE CLOSED ROADS DUE TO ACCUMULATING WATER. A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION. YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION SHOULD FLASH FLOOD WARNINGS BE ISSUED. $$ THOMPSON
000 WGUS63 KARX 182015 FFAARX URGENT - IMMEDIATE BROADCAST REQUESTED FLOOD WATCH NATIONAL WEATHER SERVICE LA CROSSE WI 315 PM CDT SAT AUG 18 2007 ...HEAVY RAINS TO CONTINUE TONIGHT... .MOISTURE WILL CONTINUE TO STREAM NORTHWARD OF A NEARLY STATIONARY FRONT...SITUATED ACROSS NORTHERN IA AND CENTRAL ILLINOIS...RESULTING IN WIDESPREAD RAINFALL FOR THE AREA TONIGHT. DUE TO THE APPRECIABLE AMOUNT OF MOISTURE IN THE AIR...PERIODS OF HEAVY RAIN ARE LIKELY. WITH AREA SOILS ALREADY WET FROM RECENT RAINS...THE RAINFALL RUNOFF COULD LEAD TO FLASH FLOODING PROBLEMS. IAZ008>011-018-019-029-030-MNZ086>088-094>096-WIZ041-053>055-061- 190415- /O.EXT.KARX.FF.A.0005.000000T0000Z-070819T0900Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ MITCHELL-HOWARD-WINNESHIEK-ALLAMAKEE-FLOYD-CHICKASAW-FAYETTE- CLAYTON-DODGE-OLMSTED-WINONA-MOWER-FILLMORE-HOUSTON-LA CROSSE- VERNON-CRAWFORD-RICHLAND-GRANT- INCLUDING THE CITIES OF...DECORAH...WAUKON...CHARLES CITY... OELWEIN...ROCHESTER...WINONA...AUSTIN...LA CROSSE...VIROQUA... PRAIRIE DU CHIEN...RICHLAND CENTER...PLATTEVILLE 315 PM CDT SAT AUG 18 2007 ...FLASH FLOOD WATCH NOW IN EFFECT THROUGH LATE TONIGHT... THE FLASH FLOOD WATCH IS NOW IN EFFECT FOR * PORTIONS OF IOWA...SOUTHEAST MINNESOTA AND WISCONSIN... INCLUDING THE FOLLOWING AREAS...IN IOWA...ALLAMAKEE... CHICKASAW...CLAYTON...FAYETTE...FLOYD...HOWARD...MITCHELL AND WINNESHIEK. IN SOUTHEAST MINNESOTA...DODGE...FILLMORE... HOUSTON...MOWER...OLMSTED AND WINONA. IN WISCONSIN... CRAWFORD...GRANT...LA CROSSE...RICHLAND AND VERNON. * THROUGH LATE TONIGHT * SHOWERS AND THUNDERSTORMS WILL PRODUCE LOCALLY HEAVY RAINFALL TONIGHT. THE RECENT RAINS HAVE LEFT AREA SOILS WET...AND ANY ADDITIONAL HEAVY RAINFALL COULD LEAD TO FLASH FLOODING. * RUNOFF FROM THE HEAVY RAINS MAY LEAD TO FAST-FLOWING WATER OVER ROADS...PONDING OF WATER IN LOW LYING AREAS...AND SOIL EROSION OR MUD SLIDES IN HILLY TERRAIN. URBAN AREAS MAY ALSO EXPERIENCE CLOSED ROADS DUE TO ACCUMULATING WATER. A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION. YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION SHOULD FLASH FLOOD WARNINGS BE ISSUED. $$ RIECK
000 WGUS63 KARX 190215 FFAARX URGENT - IMMEDIATE BROADCAST REQUESTED FLOOD WATCH NATIONAL WEATHER SERVICE LA CROSSE WI 915 PM CDT SAT AUG 18 2007 ...HEAVY RAINS TO CONTINUE TONIGHT... .MOISTURE WILL CONTINUE TO STREAM UP AND OVER A STATIONARY FRONT LOCATED ACROSS CENTRAL IOWA AND NORTHERN IOWA. THIS WILL RESULT IN REPEATED ROUNDS OF SHOWERS AND THUNDERSTORMS MOVING ACROSS THE REGION. LOCALLY HEAVY RAIN WILL OCCUR WITH HOURLY RAINFALL AMOUNTS OF 1 TO 2 INCHES AN HOUR. WITH AREA SOILS ALREADY WET FROM RECENT RAINS...THE RAINFALL RUNOFF COULD LEAD TO FLASH FLOODING PROBLEMS. MNZ079-WIZ032-033-190900- /O.EXA.KARX.FF.A.0005.000000T0000Z-070819T0900Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ WABASHA-BUFFALO-TREMPEALEAU- 915 PM CDT SAT AUG 18 2007 ...FLASH FLOOD WATCH IN EFFECT UNTIL 4 AM CDT SUNDAY... THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS EXPANDED THE * FLASH FLOOD WATCH TO INCLUDE PORTIONS OF SOUTHEAST MINNESOTA AND WEST CENTRAL WISCONSIN...INCLUDING THE FOLLOWING AREAS... IN SOUTHEAST MINNESOTA...WABASHA. IN WEST CENTRAL WISCONSIN... BUFFALO AND TREMPEALEAU. * UNTIL 4 AM CDT SUNDAY * SHOWERS AND THUNDERSTORMS WILL PRODUCE LOCALLY HEAVY RAINFALL TONIGHT. THE RECENT RAINS HAVE LEFT AREA SOILS WET...AND ANY ADDITIONAL HEAVY RAINFALL COULD LEAD TO FLASH FLOODING. * RUNOFF FROM THE HEAVY RAINS MAY LEAD TO FAST-FLOWING WATER OVER ROADS...PONDING OF WATER IN LOW LYING AREAS...AND SOIL EROSION OR MUD SLIDES IN HILLY TERRAIN. URBAN AREAS MAY ALSO EXPERIENCE CLOSED ROADS DUE TO ACCUMULATING WATER. A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION. YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION SHOULD FLASH FLOOD WARNINGS BE ISSUED. $$ IAZ008>011-018-019-029-030-MNZ086>088-094>096-WIZ041-053>055-061- 190900- /O.CON.KARX.FF.A.0005.000000T0000Z-070819T0900Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ MITCHELL-HOWARD-WINNESHIEK-ALLAMAKEE-FLOYD-CHICKASAW-FAYETTE- CLAYTON-DODGE-OLMSTED-WINONA-MOWER-FILLMORE-HOUSTON-LA CROSSE- VERNON-CRAWFORD-RICHLAND-GRANT- INCLUDING THE CITIES OF...DECORAH...WAUKON...CHARLES CITY... OELWEIN...ROCHESTER...WINONA...AUSTIN...LA CROSSE...VIROQUA... PRAIRIE DU CHIEN...RICHLAND CENTER...PLATTEVILLE 915 PM CDT SAT AUG 18 2007 ...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 4 AM CDT SUNDAY... THE FLASH FLOOD WATCH CONTINUES FOR * PORTIONS OF IOWA...SOUTHEAST MINNESOTA AND WISCONSIN... INCLUDING THE FOLLOWING AREAS...IN IOWA...ALLAMAKEE... CHICKASAW...CLAYTON...FAYETTE...FLOYD...HOWARD...MITCHELL AND WINNESHIEK. IN SOUTHEAST MINNESOTA...DODGE...FILLMORE... HOUSTON...MOWER...OLMSTED AND WINONA. IN WISCONSIN... CRAWFORD...GRANT...LA CROSSE...RICHLAND AND VERNON. * UNTIL 4 AM CDT SUNDAY * SHOWERS AND THUNDERSTORMS WILL PRODUCE LOCALLY HEAVY RAINFALL TONIGHT. THE RECENT RAINS HAVE LEFT AREA SOILS WET...AND ANY ADDITIONAL HEAVY RAINFALL COULD LEAD TO FLASH FLOODING. * RUNOFF FROM THE HEAVY RAINS MAY LEAD TO FAST-FLOWING WATER OVER ROADS...PONDING OF WATER IN LOW LYING AREAS...AND SOIL EROSION OR MUD SLIDES IN HILLY TERRAIN. URBAN AREAS MAY ALSO EXPERIENCE CLOSED ROADS DUE TO ACCUMULATING WATER. A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION. YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION SHOULD FLASH FLOOD WARNINGS BE ISSUED. $$ 04
000 WGUS63 KARX 190847 FFAARX URGENT - IMMEDIATE BROADCAST REQUESTED FLOOD WATCH NATIONAL WEATHER SERVICE LA CROSSE WI 347 AM CDT SUN AUG 19 2007 ...HEAVY RAINS TO CONTINUE TODAY... .MOISTURE WILL CONTINUE TO STREAM UP AND OVER A STATIONARY FRONT LOCATED ACROSS NORTHERN IOWA. THIS WILL RESULT IN MORE SHOWERS AND THUNDERSTORMS ACROSS THE AREA. WITH THE ALREADY SATURATED GROUND AND MANY RIVERS OUT OF THEIR BANKS ANY ADDITIONAL RAINFALL WILL ONLY AGGRAVATE THE FLOODING PROBLEMS. IAZ008>011-018-019-029-030-MNZ079-086>088-094>096-WIZ032-033-041- 053>055-061-191700- /O.EXT.KARX.FF.A.0005.000000T0000Z-070820T0000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ MITCHELL-HOWARD-WINNESHIEK-ALLAMAKEE-FLOYD-CHICKASAW-FAYETTE- CLAYTON-WABASHA-DODGE-OLMSTED-WINONA-MOWER-FILLMORE-HOUSTON- BUFFALO-TREMPEALEAU-LA CROSSE-VERNON-CRAWFORD-RICHLAND-GRANT- INCLUDING THE CITIES OF...DECORAH...WAUKON...CHARLES CITY... OELWEIN...ROCHESTER...WINONA...AUSTIN...LA CROSSE...VIROQUA... PRAIRIE DU CHIEN...RICHLAND CENTER...PLATTEVILLE 347 AM CDT SUN AUG 19 2007 ...FLASH FLOOD WATCH NOW IN EFFECT THROUGH THIS EVENING... THE FLASH FLOOD WATCH IS NOW IN EFFECT FOR * PORTIONS OF IOWA...SOUTHEAST MINNESOTA AND WISCONSIN... INCLUDING THE FOLLOWING AREAS...IN IOWA...ALLAMAKEE... CHICKASAW...CLAYTON...FAYETTE...FLOYD...HOWARD...MITCHELL AND WINNESHIEK. IN SOUTHEAST MINNESOTA...DODGE...FILLMORE... HOUSTON...MOWER...OLMSTED...WABASHA AND WINONA. IN WISCONSIN... BUFFALO...CRAWFORD...GRANT...LA CROSSE...RICHLAND... TREMPEALEAU AND VERNON. * THROUGH THIS EVENING * SHOWERS AND THUNDERSTORMS WILL PRODUCE LOCALLY HEAVY RAINFALL TODAY. THE RECENT RAINS HAVE LEFT AREA SOILS SATURATED...AND ANY ADDITIONAL HEAVY RAINFALL WILL LEAD TO FLASH FLOODING. ADDITIONAL RAINFALL AMOUNTS OF 1 TO 3 INCHES CAN BE EXPECTED THROUGH THIS EVENING. * RUNOFF FROM THE HEAVY RAINS WILL LEAD TO FAST-FLOWING WATER OVER ROADS...PONDING OF WATER IN LOW LYING AREAS...AND SOIL EROSION OR MUD SLIDES IN HILLY TERRAIN. URBAN AREAS MAY ALSO EXPERIENCE CLOSED ROADS DUE TO ACCUMULATING WATER. A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION. YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION SHOULD FLASH FLOOD WARNINGS BE ISSUED. $$ RABERDING
000 WGUS63 KARX 191624 FFAARX FLOOD WATCH NATIONAL WEATHER SERVICE LA CROSSE WI 1124 AM CDT SUN AUG 19 2007 ...HEAVY RAINS CONTINUE TODAY... .MOISTURE CONTINUES TO STREAM UP AND OVER A STATIONARY FRONT LOCATED ACROSS NORTHERN IOWA. AS A RESULT...ADDITIONAL SHOWERS AND THUNDERSTORMS ARE EXPECTED ACROSS THE AREA TODAY. WITH THE ALREADY SATURATED GROUND AND MANY RIVERS OUT OF THEIR BANKS...ANY ADDITIONAL RAINFALL WILL ONLY AGGRAVATE ONGOING FLOODING PROBLEMS. IAZ008>011-018-019-029-030-MNZ079-086>088-094>096-WIZ032-033-041- 053>055-061-200000- /O.CON.KARX.FF.A.0005.000000T0000Z-070820T0000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ MITCHELL-HOWARD-WINNESHIEK-ALLAMAKEE-FLOYD-CHICKASAW-FAYETTE- CLAYTON-WABASHA-DODGE-OLMSTED-WINONA-MOWER-FILLMORE-HOUSTON- BUFFALO-TREMPEALEAU-LA CROSSE-VERNON-CRAWFORD-RICHLAND-GRANT- INCLUDING THE CITIES OF...DECORAH...WAUKON...CHARLES CITY... OELWEIN...ROCHESTER...WINONA...AUSTIN...LA CROSSE...VIROQUA... PRAIRIE DU CHIEN...RICHLAND CENTER...PLATTEVILLE 1124 AM CDT SUN AUG 19 2007 ...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING... THE FLASH FLOOD WATCH CONTINUES FOR * PORTIONS OF IOWA...SOUTHEAST MINNESOTA AND WISCONSIN... INCLUDING THE FOLLOWING AREAS...IN IOWA...ALLAMAKEE... CHICKASAW...CLAYTON...FAYETTE...FLOYD...HOWARD...MITCHELL AND WINNESHIEK. IN SOUTHEAST MINNESOTA...DODGE...FILLMORE... HOUSTON...MOWER...OLMSTED...WABASHA AND WINONA. IN WISCONSIN... BUFFALO...CRAWFORD...GRANT...LA CROSSE...RICHLAND... TREMPEALEAU AND VERNON. * UNTIL 7 PM CDT THIS EVENING * SHOWERS AND THUNDERSTORMS WILL PRODUCE LOCALLY HEAVY RAINFALL TODAY. THE RECENT RAINS HAVE LEFT AREA SOILS SATURATED...AND ANY ADDITIONAL HEAVY RAINFALL COULD LEAD TO FLASH FLOODING. ADDITIONAL RAINFALL AMOUNTS OF 1 TO 2 INCHES CAN BE EXPECTED THROUGH THIS EVENING. * RUNOFF FROM THE HEAVY RAINS WILL LEAD TO FAST-FLOWING WATER OVER ROADS...PONDING OF WATER IN LOW LYING AREAS...AND SOIL EROSION OR MUD SLIDES IN HILLY TERRAIN. URBAN AREAS MAY ALSO EXPERIENCE CLOSED ROADS DUE TO ACCUMULATING WATER. A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION. YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION SHOULD FLASH FLOOD WARNINGS BE ISSUED. $$ THOMPSON
000 WGUS63 KARX 192020 FFAARX URGENT - IMMEDIATE BROADCAST REQUESTED FLOOD WATCH NATIONAL WEATHER SERVICE LA CROSSE WI 320 PM CDT SUN AUG 19 2007 ...HEAVY RAIN THREAT CONTINUES TONIGHT... .A RAINFALL AND FLOODING EVENT OF HISTORIC PORTIONS HAS STRUCK PARTS OF THE AREA...ESPECIALLY ACROSS THE COUNTIES OF WINONA...HOUSTON...AND VERNON. LAW ENFORCEMENT REPORTED NUMEROUS INJURIES AND SOME FATALITIES. WITH A FRONTAL BOUNDARY PERSISTING TO THE SOUTH...ADDITIONAL SHOWERS AND THUNDERSTORMS...CAPABLE OF PRODUCING HEAVY RAIN...CAN BE EXPECTED TONIGHT. ADDITIONAL AMOUNTS FROM 1 TO 3 INCHES ARE POSSIBLE. ANY ADDITIONAL RAIN WILL EXASPERATE THE FLOODING ALREADY ON GOING...OR CREATE ADDITIONAL PROBLEMS IN OTHER AREAS. IAZ008>011-018-019-029-030-MNZ079-086>088-094>096-WIZ032-033-041- 053>055-061-200430- /O.EXT.KARX.FF.A.0005.000000T0000Z-070820T0900Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ MITCHELL-HOWARD-WINNESHIEK-ALLAMAKEE-FLOYD-CHICKASAW-FAYETTE- CLAYTON-WABASHA-DODGE-OLMSTED-WINONA-MOWER-FILLMORE-HOUSTON- BUFFALO-TREMPEALEAU-LA CROSSE-VERNON-CRAWFORD-RICHLAND-GRANT- INCLUDING THE CITIES OF...DECORAH...WAUKON...CHARLES CITY... OELWEIN...ROCHESTER...WINONA...AUSTIN...LA CROSSE...VIROQUA... PRAIRIE DU CHIEN...RICHLAND CENTER...PLATTEVILLE 320 PM CDT SUN AUG 19 2007 ...FLASH FLOOD WATCH NOW IN EFFECT THROUGH LATE TONIGHT... THE FLASH FLOOD WATCH IS NOW IN EFFECT FOR * PORTIONS OF IOWA...SOUTHEAST MINNESOTA AND WISCONSIN... INCLUDING THE FOLLOWING AREAS...IN IOWA...ALLAMAKEE... CHICKASAW...CLAYTON...FAYETTE...FLOYD...HOWARD...MITCHELL AND WINNESHIEK. IN SOUTHEAST MINNESOTA...DODGE...FILLMORE... HOUSTON...MOWER...OLMSTED...WABASHA AND WINONA. IN WISCONSIN... BUFFALO...CRAWFORD...GRANT...LA CROSSE...RICHLAND... TREMPEALEAU AND VERNON. * THROUGH LATE TONIGHT * SHOWERS AND THUNDERSTORMS WILL PRODUCE LOCALLY HEAVY RAINFALL TONIGHT. ANY ADDITIONAL HEAVY RAINFALL WILL LEAD TO MORE FLASH FLOODING. ADDITIONAL RAINFALL AMOUNTS OF 1 TO 3 INCHES CAN BE EXPECTED THROUGH TONIGHT. * RUNOFF FROM THE HEAVY RAINS WILL LEAD TO FAST-FLOWING WATER OVER ROADS...PONDING OF WATER IN LOW LYING AREAS...AND SOIL EROSION OR MUD SLIDES IN HILLY TERRAIN. URBAN AREAS MAY ALSO EXPERIENCE CLOSED ROADS DUE TO ACCUMULATING WATER. A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION. THIS FLOODING EVENT HAS ALREADY PROVEN DEADLY. YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION SHOULD FLASH FLOOD WARNINGS BE ISSUED. $$ RIECK
000 WGUS63 KARX 200147 FFAARX FLOOD WATCH NATIONAL WEATHER SERVICE LA CROSSE WI 847 PM CDT SUN AUG 19 2007 ...HEAVY RAIN THREAT CONTINUES TONIGHT... .THE POTENTIAL FOR THE HEAVIEST RAIN TONIGHT CURRENTLY LOOKS TO EXIST ACROSS CENTRAL IOWA. EVEN THOUGH THE HEAVIEST RAIN WILL MOST LIKELY FALL SOUTH OF THE AREA...ADDITIONAL SHOWERS AND THUNDERSTORMS WILL MOVE ACROSS THE REGION. THESE SHOWERS AND THUNDERSTORMS WILL HAVE THE POTENTIAL TO PRODUCE SOME SHORT PERIODS OF HEAVY RAIN...WHICH COULD PRODUCE SOME ADDITIONAL LOCALIZED FLOODING. RADAR ESTIMATES INDICATE THAT A HALF TO AS MUCH AS TWO INCHES HAS ALREADY FALLEN THIS EVENING. THE POTENTIAL EXISTS FOR ADDITIONAL RAINFALL AMOUNTS OF A HALF TO ONE AND A HALF INCHES TO FALL OVERNIGHT. IAZ008>011-018-019-029-030-MNZ079-086>088-094>096-WIZ032-033-041- 053>055-061-200900- /O.CON.KARX.FF.A.0005.000000T0000Z-070820T0900Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ MITCHELL-HOWARD-WINNESHIEK-ALLAMAKEE-FLOYD-CHICKASAW-FAYETTE- CLAYTON-WABASHA-DODGE-OLMSTED-WINONA-MOWER-FILLMORE-HOUSTON- BUFFALO-TREMPEALEAU-LA CROSSE-VERNON-CRAWFORD-RICHLAND-GRANT- INCLUDING THE CITIES OF...DECORAH...WAUKON...CHARLES CITY... OELWEIN...ROCHESTER...WINONA...AUSTIN...LA CROSSE...VIROQUA... PRAIRIE DU CHIEN...RICHLAND CENTER...PLATTEVILLE 847 PM CDT SUN AUG 19 2007 ...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 4 AM CDT MONDAY... THE FLASH FLOOD WATCH CONTINUES FOR * PORTIONS OF IOWA...SOUTHEAST MINNESOTA AND WISCONSIN... INCLUDING THE FOLLOWING AREAS...IN IOWA...ALLAMAKEE... CHICKASAW...CLAYTON...FAYETTE...FLOYD...HOWARD...MITCHELL AND WINNESHIEK. IN SOUTHEAST MINNESOTA...DODGE...FILLMORE... HOUSTON...MOWER...OLMSTED...WABASHA AND WINONA. IN WISCONSIN... BUFFALO...CRAWFORD...GRANT...LA CROSSE...RICHLAND... TREMPEALEAU AND VERNON. * UNTIL 4 AM CDT MONDAY * SHOWERS AND THUNDERSTORMS WILL PRODUCE LOCALLY HEAVY RAINFALL TONIGHT. ANY ADDITIONAL HEAVY RAINFALL WILL LEAD TO MORE FLASH FLOODING. ADDITIONAL RAINFALL AMOUNTS OF 1 TO 3 INCHES CAN BE EXPECTED THROUGH TONIGHT. * RUNOFF FROM THE HEAVY RAINS WILL LEAD TO FAST-FLOWING WATER OVER ROADS...PONDING OF WATER IN LOW LYING AREAS...AND SOIL EROSION OR MUD SLIDES IN HILLY TERRAIN. URBAN AREAS MAY ALSO EXPERIENCE CLOSED ROADS DUE TO ACCUMULATING WATER. A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION. THIS FLOODING EVENT HAS ALREADY PROVEN DEADLY. YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION SHOULD FLASH FLOOD WARNINGS BE ISSUED. $$ 04
000 WGUS63 KARX 200525 FFAARX FLOOD WATCH NATIONAL WEATHER SERVICE LA CROSSE WI 1225 AM CDT MON AUG 20 2007 ...HEAVY RAIN THREAT CONTINUES TONIGHT... .THE HEAVY RAINS FOR THE OVERNIGHT HOURS WILL REMAIN SOUTH OF THE REGION ACROSS CENTRAL IOWA. HOWEVER...SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS WILL MOVE ACROSS THE AREA. THESE SHOWERS AND THUNDERSTORMS WILL HAVE THE POTENTIAL TO PRODUCE SOME SHORT PERIODS OF HEAVY RAIN...WHICH COULD PRODUCE SOME ADDITIONAL LOCALIZED FLOODING. RADAR ESTIMATES INDICATE THAT A HALF TO AS MUCH AS TWO AND A HALF INCHES OF RAIN FELL SUNDAY EVENING. THE POTENTIAL EXISTS FOR ADDITIONAL RAINFALL AMOUNTS OF A QUARTER TO ONE AND A HALF INCHES TO FALL. IAZ008>011-018-019-029-030-MNZ079-086>088-094>096-WIZ032-033-041- 053>055-061-200900- /O.CON.KARX.FF.A.0005.000000T0000Z-070820T0900Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ MITCHELL-HOWARD-WINNESHIEK-ALLAMAKEE-FLOYD-CHICKASAW-FAYETTE- CLAYTON-WABASHA-DODGE-OLMSTED-WINONA-MOWER-FILLMORE-HOUSTON- BUFFALO-TREMPEALEAU-LA CROSSE-VERNON-CRAWFORD-RICHLAND-GRANT- INCLUDING THE CITIES OF...DECORAH...WAUKON...CHARLES CITY... OELWEIN...ROCHESTER...WINONA...AUSTIN...LA CROSSE...VIROQUA... PRAIRIE DU CHIEN...RICHLAND CENTER...PLATTEVILLE 1225 AM CDT MON AUG 20 2007 ...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 4 AM CDT EARLY THIS MORNING... THE FLASH FLOOD WATCH CONTINUES FOR * PORTIONS OF IOWA...SOUTHEAST MINNESOTA AND WISCONSIN... INCLUDING THE FOLLOWING AREAS...IN IOWA...ALLAMAKEE... CHICKASAW...CLAYTON...FAYETTE...FLOYD...HOWARD...MITCHELL AND WINNESHIEK. IN SOUTHEAST MINNESOTA...DODGE...FILLMORE... HOUSTON...MOWER...OLMSTED...WABASHA AND WINONA. IN WISCONSIN... BUFFALO...CRAWFORD...GRANT...LA CROSSE...RICHLAND... TREMPEALEAU AND VERNON. * UNTIL 4 AM CDT EARLY THIS MORNING * SHOWERS AND THUNDERSTORMS WILL PRODUCE LOCALLY HEAVY RAINFALL TONIGHT. ANY ADDITIONAL HEAVY RAINFALL WILL LEAD TO MORE FLASH FLOODING. ADDITIONAL RAINFALL AMOUNTS OF 1 TO 3 INCHES CAN BE EXPECTED THROUGH TONIGHT. * RUNOFF FROM THE HEAVY RAINS WILL LEAD TO FAST-FLOWING WATER OVER ROADS...PONDING OF WATER IN LOW LYING AREAS...AND SOIL EROSION OR MUD SLIDES IN HILLY TERRAIN. URBAN AREAS MAY ALSO EXPERIENCE CLOSED ROADS DUE TO ACCUMULATING WATER. A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION. THIS FLOODING EVENT HAS ALREADY PROVEN DEADLY. YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION SHOULD FLASH FLOOD WARNINGS BE ISSUED. $$
000 WGUS63 KARX 200904 FFAARX FLOOD WATCH NATIONAL WEATHER SERVICE LA CROSSE WI 404 AM CDT MON AUG 20 2007 ...FLASH FLOOD WATCH ALLOWED TO EXPIRE THIS MORNING... .EVEN THOUGH A FEW SHOWERS AND THUNDERSTORMS LINGER OVER PARTS OF NORTHEAST IOWA AND SOUTHWEST WISCONSIN EARLY THIS MORNING...THE THREAT OF HEAVY RAINS AND FLASH FLOODING HAS DIMINISHED ACROSS THE AREA. THUS THE FLASH FLOOD WATCH HAS BEEN ALLOWED TO EXPIRE AT 4 AM. IAZ008>011-018-019-029-030-MNZ079-086>088-094>096-WIZ032-033-041- 053>055-061-201015- /O.EXP.KARX.FF.A.0005.000000T0000Z-070820T0900Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ MITCHELL-HOWARD-WINNESHIEK-ALLAMAKEE-FLOYD-CHICKASAW-FAYETTE- CLAYTON-WABASHA-DODGE-OLMSTED-WINONA-MOWER-FILLMORE-HOUSTON- BUFFALO-TREMPEALEAU-LA CROSSE-VERNON-CRAWFORD-RICHLAND-GRANT- INCLUDING THE CITIES OF...DECORAH...WAUKON...CHARLES CITY... OELWEIN...ROCHESTER...WINONA...AUSTIN...LA CROSSE...VIROQUA... PRAIRIE DU CHIEN...RICHLAND CENTER...PLATTEVILLE 404 AM CDT MON AUG 20 2007 ...FLASH FLOOD WATCH WILL EXPIRE AT 4 AM CDT EARLY THIS MORNING... THE FLASH FLOOD WATCH FOR PORTIONS OF IOWA...SOUTHEAST MINNESOTA AND WISCONSIN HAS BEEN ALLOWED TO EXPIRE AT 4 AM CDT EARLY THIS MORNING. $$ RRS
What forecasters said that day
The local office's own words before this flash flood watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS La Crosse, WI wrote its last area forecast discussion before this flash flood watch went out at Aug 18, 3:04 AM CDT, 15 minutes earlier.
Area forecast discussion, Aug 18, 3:04 AM CDT, 15 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LA CROSSE WI
304 AM CDT SAT AUG 18 2007
.SHORT TERM...TODAY THROUGH MONDAY NIGHT
FORECAST CONCERNS ARE ON RAIN AMOUNTS OVER THE NEXT SEVERAL DAYS AND
EXTENT OF FLOOD/FLASH FLOOD THREAT.
07Z SURFACE ANALYSIS SHOWS HIGH PRESSURE CENTERED JUST NORTH OF
LAKE SUPERIOR AND EXTENDING INTO EASTERN WISCONSIN. DRY EASTERLY
FLOW AROUND THE HIGH ADVECTING MID 30 DEW POINTS INTO NORTHEAST
WISCONSIN. MEANWHILE FARTHER WEST SURFACE WARM FRONT RESIDES
FROM CENTRAL NEBRASKA INTO EASTERN KANSAS. 30 TO 40 KNOT LOW
LEVEL JET SHOWING UP ON PROFILER DATA TRANSPORTING MOISTURE OVER
THE BOUNDARY. THE RESULT HAS BEEN CONVECTION BREAKING OUT FROM
SOUTHEASTERN SOUTH DAKOTA...THROUGH CENTRAL IOWA.
00Z 18AUG07 MODELS ONE AGAIN IN DECENT AGREEMENT BUT CONTINUE TO
HAVE PROBLEMS WITH PLACEMENT OF THEIR QPF FIELDS. NAM CONTINUE TO BE
THE FARTHEST NORTH WITH ITS HEAVIEST RAIN FALLING ALONG THE HIGHWAY
29 CORRIDOR...WHILE THE GFS IS FURTHER SOUTH. GIVEN MODEL BIASES
AND FORCING FIELDS LOOKS AS THOUGH THE GFS MAY BE A BIT CLOSER WITH
REGARDS TO POSITION. GENERALLY TAKING A COMPROMISE AND RELY HEAVILY
ON HPC QPF FIELDS.
OVERALL SYNOPTIC PATTERN DIGS TROUGH ACROSS THE PACIFIC NORTHWEST
WITH A CLOSED MID LEVEL CIRCULATION MOVING ON SHORE BY 12Z SUNDAY
AND THEN SHIFTING IT EASTWARD INTO ALBERTA BY 18Z MONDAY. DOWNSTREAM
RIDGE THEN BUILDS FROM THE CANADIAN PRAIRIE PROVINCES INTO ONTARIO
BY MONDAY. FORECAST AREA THEN REMAINS IN NEARLY ZONAL FLOW THROUGH
THE PERIOD.
IN THE NEAR TERM...SHORTWAVE TO ROTATE ACROSS THE NORTHERN PLAINS
TODAY AS SURFACE LOW TRACKS INTO SOUTH DAKOTA. WARM FRONT TO
CONTINUE LIFTING NORTHWARD THROUGH TONIGHT. STRONG 925 MB TO 700 MB
FRONTOGENESIS WILL DEVELOP ACROSS THE FORECAST AREA. A 35 KNOT
850 MB JET WILL FEED ABUNDANT MOISTURE INTO THIS SAME AREA
RESULTING IN VERY GOOD MOISTURE CONVERGENCE. IN ADDITION MOISTURE
FROM THE REMNANTS OF TROPICAL STORM ERIN WILL CONTINUE TO BE DRAWN
NORTHWARD TOWARD THE AREA. WITH FREEZING LEVELS QUITE HIGH EXPECT
EFFICIENT RAIN PRODUCERS WITH WARM RAIN PROCESSES OCCURRING.
GIVEN FORCING PARAMETERS AND PRECIPITABLE WATER VALUES NEAR 2
INCHES ALONG WITH LOWER FLASH FLOOD GUIDANCE WILL BE HOISTING
A FLASH FLOOD WATCH FOR TODAY. DAY SHIFT CAN MONITOR TRENDS FOR
POSSIBLE EXPANSION/EXTENSION OF THE WATCH FOR TONIGHT.
WARM FRONT WILL REMAIN OVER THE AREA SUNDAY AND SUNDAY NIGHT WITH
CONTINUES MOISTURE TRANSPORT INTO IT. BOTH NAM AND GFS BOTH SHOW
ANOTHER MCS DEVELOPING ACROSS MINNESOTA SUNDAY EVENING AND MOVING
SOUTHEAST ALONG THE FRONT ACROSS NORTHEAST IOWA AND SOUTHWEST
WISCONSIN. THUS HAVE RAISED POPS INTO THE LIKELY CATEGORY ACROSS
THE SOUTHERN COUNTIES ON MONDAY.
WITH THE CLOUDS AND RAIN...DIURNAL TEMPERATURE RANGES WILL BE QUITE
LOW. WITH GUIDANCE NUMBERS COMING IN COOLER FOR SUNDAY CONTINUED
THE TREND OF LOWERING TEMPERATURES FROM PREVIOUS FORECAST PACKAGE.
.LONG TERM...TUESDAY THROUGH FRIDAY
ZONAL FLOW WILL CONTINUE ACROSS THE NORTHERN CONUS THROUGH THE
PERIOD. WITH EMBEDDED WAVES INTERACTING WITH AN EAST/WEST BOUNDARY
NEAR THE AREA THE WEATHER PATTERN WILL CONTINUE TO BE VERY ACTIVE.
CURRENT SET OF GRIDS HAS THIS WELL IN HAND WITH NO CHANGES PLANNED.
&&
.AVIATION...TONIGHT AND SATURDAY
THE NEXT 24HRS A SOMEWHAT DIFFICULT PERIOD...WITH A LOT HINGING ON
SMALLER SCALE DETAILS OF WHERE BANDS OF HEAVIER SHRA/TSRA WILL SET
UP/PERSIST. 850-700MB MOISTURE TRANSPORT AND THETA-E CONVERGENCE
WILL INCREASE INTO SOUTHERN MN/WESTERN WI THIS MORNING AS A LOW
LEVEL JET NOSES INTO THE AREA. THIS FORCING/LIFT ALONG WITH A VERY
MOIST AIRMASS WILL SPREAD LOWERING CLOUDS AND WIDESPREAD SHRA/TSRA
ACROSS THE TAF SITES THRU THE DAY. OUTSIDE OF THE HEAVIER TSRA...
CIGS GENERALLY EXPECTED TO BE VFR...WITH VFR/MVFR VSBYS. IFR
VSBYS/CIGS A GOOD BET IN THE TSRA CORES IN TORRENTIAL DOWNPOURS.
PLENTY OF UNCERTAINTY OF DETAILS TONIGHT. SOME SIGNALS THE HEAVIER
SHRA/TSRA WILL LIFT NORTH OF THE TAF SITES TONIGHT...OTHERS KEEP
THEM OVER/NEAR THE I-90 AXIS. GIVEN UNCERTAINTY...WILL LIKELY ADD
SOME MVFR CIGS/VCTS/CB FOR TONIGHT IN LATER TAF ISSUANCES.
&&
.ARX WATCHES/WARNINGS/ADVISORIES...
WI...FLASH FLOOD WATCH FROM 7 AM CDT THIS MORNING THROUGH THIS
EVENING FOR WIZ041-WIZ053-WIZ054-WIZ055-WIZ061.
MN...FLASH FLOOD WATCH FROM 7 AM CDT THIS MORNING THROUGH THIS
EVENING FOR MNZ086-MNZ087-MNZ088-MNZ094-MNZ095-MNZ096.
IA...FLASH FLOOD WATCH FROM 7 AM CDT THIS MORNING THROUGH THIS
EVENING FOR IAZ008-IAZ009-IAZ010-IAZ011-IAZ018-IAZ019-
IAZ029-IAZ030.
&&
AVIATION - RRS
SHORT AND LONG TERM - RABERDINGHazardous weather outlook, Aug 17, 5:00 AM CDT, 22 hours 19 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE LA CROSSE WI 500 AM CDT FRI AUG 17 2007 IAZ008>011-018-019-029-030-MNZ079-086>088-094>096-WIZ017-029- 032>034-041>044-053>055-061-181100- ADAMS-ALLAMAKEE-BUFFALO-CHICKASAW-CLARK-CLAYTON-CRAWFORD-DODGE- FAYETTE-FILLMORE-FLOYD-GRANT-HOUSTON-HOWARD-JACKSON-JUNEAU- LA CROSSE-MITCHELL-MONROE-MOWER-OLMSTED-RICHLAND-TAYLOR-TREMPEALEAU- VERNON-WABASHA-WINNESHIEK-WINONA- 500 AM CDT FRI AUG 17 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PARTS OF NORTHEAST IOWA... SOUTHEAST MINNESOTA...AND SOUTHWEST INTO CENTRAL WISCONSIN. .DAY ONE...TODAY AND TONIGHT MOISTURE RETURNING NORTH OVER A FRONTAL BOUNDARY ACROSS SOUTHERN IOWA WILL BRING A CHANCE OF THUNDERSTORMS TO LOCATIONS WEST OF THE MISSISSIPPI RIVER LATE TONIGHT. DUE TO LIMITED INSTABILITY...ANY STORMS LATE TONIGHT ARE NOT EXPECTED TO BE SEVERE. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY AN ACTIVE WEATHER PATTERN WILL KEEP THE AREA UNDER THE GUN FOR SEVERAL ROUNDS OF THUNDERSTORMS THROUGH THE WEEKEND AND INTO NEXT WEEK. UPPER LEVEL DISTURBANCES CROSSING THE REGION...ALONG WITH CONTINUED MOISTURE RETURN INTO AND OVER A STATIONARY FRONTAL BOUNDARY ACROSS IOWA...WILL BRING THUNDERSTORM CHANCES TO THE AREA FOR MUCH OF THE SATURDAY THROUGH THURSDAY PERIOD. THE GREATEST THREAT FROM THESE THUNDERSTORMS LOOKS TO BE REPEATED ROUNDS OF HEAVY RAINS. THE ATMOSPHERE WILL BE QUITE MOIST...AND ANY STORMS THAT DO DEVELOP SHOULD BE VERY GOOD RAIN PRODUCERS. REPEATED BOUTS OF HEAVY RAINFALL COULD LEAD TO SOME FLOODING CONCERNS ACROSS THE AREA. STORMS SATURDAY INTO SATURDAY NIGHT COULD BE STRONG...WITH HAIL AND GUSTY WINDS. HOWEVER...WITH SHOWERS AND THUNDERSTORMS EXPECTED TO MOVE IN SATURDAY MORNING INSTABILITY MAY REMAIN QUITE LIMITED. FOR SUNDAY AND BEYOND...IT IS TOO EARLY TO DETERMINE THE TIMING AND PLACEMENT DETAILS OF ANY HEAVY RAIN OR SEVERE STORM THREATS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED TODAY OR TONIGHT. HOWEVER... SPOTTER ACTIVATION MAY BE NEEDED THROUGH THE WEEKEND. IN ADDITION... REPORTS OF HEAVY RAIN OR HIGH WATER WOULD BE GREATLY APPRECIATED. .EMERGENCY MANAGEMENT COORDINATION... NO CALL IS SCHEDULED. RRS
The office that day
Everything else NWS La Crosse, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 18, 5:48 PM CDT | River Flood Warning | ARX | Clayton | 17 hr |
| Aug 18, 5:48 PM CDT | River Flood Warning | ARX | Clayton | 17 hr |
| Aug 18, 5:48 PM CDT | River Flood Warning | ARX | Allamakee | 35 hr |
| Aug 18, 5:48 PM CDT | River Flood Warning | ARX | Houston | 64 hr |
Nearby
Flash Flood Watches in Iowa, 2007Flash Flood Watches in Minnesota, 2007Flash Flood Watches in Wisconsin, 2007Every flash flood watch 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.