Alert archive / Iowa / Flash Flood Warnings in 2013
Flash Flood Warning 3, NWS La Crosse, WI
NWS La Crosse, WI issued this flash flood warning at May 29, 2013, 3:41 PM CDT for Chickasaw County, Iowa. It was in force for 6 hr. 2 reports 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
- May 29, 2013, 3:41 PM CDT (20:41 UTC)
- Expired
- May 29, 2013, 9:30 PM CDT
- In force
- 6 hr
- Issued by
- NWS La Crosse, WI
- Area
- Storm-based polygon
- Flood severity
- None
County Chickasaw County, IA
The radar
The La Crosse radar (KARX), 126 km from the middle of the area, began a volume at 20:43 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 29, 4:25 PM CDT | FLASH FLOOD | Lawler, IA | STREET FLOODING. WATER IN SEVERAL BASEMENTS. |
| May 29, 6:46 PM CDT | FLASH FLOOD | New Hampton, IA | EASTERN PARTS OF COUNTY...WIDESPREAD FLOODING...NUMEROUS STREETS IN NEW HAMPTON FLOODED |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Minneapolis, MN (KMPX), launched 12:00Z, 8.7 hours before the alert went out and 216 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
- 795 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- -11 m²/s²
- 0-3 km storm-relative helicity
- 9 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
125
WGUS53 KARX 292041
FFWARX
IAC037-300230-
/O.NEW.KARX.FF.W.0003.130529T2041Z-130530T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LA CROSSE WI
341 PM CDT WED MAY 29 2013
THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A
* FLASH FLOOD WARNING FOR...
CHICKASAW COUNTY IN NORTHEAST IOWA...
* UNTIL 930 PM CDT
* AT 339 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS CHICKASAW
COUNTY. RADAR INDICATED RAINFALL OF 1 TO 1.5 INCHES HAS ALREADY
FALLEN IN AN HOUR OR LESS...AND ADDITIONAL RAIN AMOUNTS OF 1 TO 2
INCHES ARE EXPECTED THROUGH 6 PM.
* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...NEW
HAMPTON...FREDERICKSBURG...IONIA...JERICO...LAWLER AND NASHUA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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. IF HIGH WATER IS ENCOUNTERED...DONT
TAKE CHANCES...TURN AROUND DONT DROWN.
&&
LAT...LON 4320 9256 4321 9255 4321 9208 4292 9209
4292 9255
$$
MW2 follow-up statements
785
WGUS73 KARX 292132
FFSARX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
432 PM CDT WED MAY 29 2013
IAC037-300230-
/O.CON.KARX.FF.W.0003.000000T0000Z-130530T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CHICKASAW IA-
432 PM CDT WED MAY 29 2013
...FLASH FLOOD WARNING REMAINS IN EFFECT FOR CHICKASAW COUNTY UNTIL
930 PM CDT...
AT 427 PM CDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED HEAVY
RAINFALL WITH WATER IN SEVERAL BASEMENTS IN LAWLER...AND ALSO SOME
STREET FLOODING. THUNDERSTORMS WITH VERY HEAVY RAINFALL CONTINUE
ACROSS THE AREA. ANOTHER 1-2 INCHES IS POSSIBLE...ESPECIALLY ACROSS
THE SOUTHEAST PORTION OF CHICKASAW COUNTY...THROUGH 6 PM.
RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...NEW
HAMPTON...FREDERICKSBURG...IONIA...JERICO...LAWLER AND NASHUA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLOODING OF SMALL CREEKS
AND STREAMS...COUNTRY ROADS...NORMALLY DRY WASHES... AS WELL AS
FARMLAND ALONG THE BANKS OF CREEKS AND STREAMS.
&&
LAT...LON 4320 9256 4321 9255 4321 9208 4292 9209
4292 9255
$$
MW247
WGUS73 KARX 292346
FFSARX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
646 PM CDT WED MAY 29 2013
IAC037-300230-
/O.CON.KARX.FF.W.0003.000000T0000Z-130530T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CHICKASAW IA-
646 PM CDT WED MAY 29 2013
...FLASH FLOOD WARNING REMAINS IN EFFECT FOR CHICKASAW COUNTY UNTIL
930 PM CDT...
AT 643 PM CDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED THAT FLASH
FLOODING WAS OCCURRING ACROSS THE COUNTY. WATER IS OVER SEVERAL
ROADWAYS INCLUDING 190TH STREET AT UNION STREET...STANLEY
STREET...290TH STREET...PEMBROOKE STREET...AND ALSO OVER HIGHWAY 63
SOUTH OF NEW HAMPTON.
MANY SMALLER CREEKS AND RIVERS WERE OUT OF THEIR BANKS AS WELL
INCLUDING TRIBUTARIES TO THE LITTLE TURKEY RIVER...CRANE CREEK...AND
THE EAST FORK WAPSIPINICON RIVER.
SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...NEW HAMPTON...
FREDERICKSBURG...IONIA...JERICO...LAWLER AND NASHUA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DO NOT UNDERESTIMATE THE POWER OF FLOOD WATERS. ONLY A FEW INCHES OF
RAPIDLY FLOWING WATER CAN QUICKLY CARRY AWAY YOUR VEHICLE. IF HIGH
WATER IS ENCOUNTERED...PLAY IT SAFE. TURN AROUND...DONT DROWN!
&&
LAT...LON 4320 9256 4321 9255 4321 9208 4292 9209
4292 9255
$$
MWThe office that day
Everything else NWS La Crosse, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 29, 11:44 AM CDT | Flash Flood Watch | ARX | Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more | 32 hr |
| May 29, 2:25 PM CDT | Severe Thunderstorm Warning | ARX | Chickasaw, Floyd, Howard, Mitchell | 35 min |
| May 29, 2:50 PM CDT | Severe Thunderstorm Warning | ARX | Winneshiek | 25 min |
| May 29, 4:08 PM CDT | Flash Flood Warning | ARX | Howard, Winneshiek | 7 hr |
| May 29, 4:52 PM CDT | Severe Thunderstorm Warning | ARX | Fayette | 38 min |
| May 29, 5:17 PM CDT | Severe Thunderstorm Warning | ARX | Allamakee, Clayton | 58 min |
| May 29, 5:30 PM CDT | Severe Thunderstorm Warning | ARX | Allamakee | 45 min |
| May 29, 5:42 PM CDT | Flash Flood Warning | ARX | Allamakee, Winneshiek | 7 hr |
| May 29, 6:12 PM CDT | Areal Flood Warning | ARX | Fayette | 9 hr |
| May 29, 6:33 PM CDT | Flash Flood Warning | ARX | Clayton | 6 hr |
Nearby
Flash Flood Warnings in Iowa, 2013Every flash flood warning in 2013
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.