Alert archive / Wisconsin / Flash Flood Warnings in 2010

Flash Flood Warning 9, NWS Twin Cities, MN

June 26, 20105 counties in Wisconsin

NWS Twin Cities, MN issued this flash flood warning at Jun 26, 2010, 11:14 PM CDT for 5 counties in Wisconsin. It was in force for 3 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: Jun 26, 2010, 11:14 PM CDT (04:14 UTC)
Expired: Jun 27, 2010, 2:30 AM CDT
In force: 3 hr
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Flood severity: None

Counties Chippewa County, WI, Dunn County, WI, Eau Claire County, WI, Pepin County, WI, Saint Croix County, WI

The radar

The La Crosse radar (KARX), 118 km from the middle of the area, began a volume at 04:14 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 27, 12:40 AM CDT	FLASH FLOOD	W Baldwin, WI	1400 BLOCK OT 9TH AVE...THE CREEK IN WINDMILL PARK HAS OVERFLOWED ITS BANK...COVERED WITH RUNNING WATER.
Jun 27, 12:48 AM CDT	FLASH FLOOD	Ne Baldwin, WI	CREEK OVER FLOWED BANKS IN 500 BLOCK OF MAPLE ST. PEDESTRIAN BRIDGE IMPASSIBLE...WATER HEIGHT OVER PARK ENTRANCE.

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 00:00Z, 4.2 hours before the alert went out and 135 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1959 J/kg
Mixed-layer CIN: -106 J/kg
Mixed-layer LCL: 876 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: -6 m²/s²
0-3 km storm-relative helicity: 34 m²/s²
Significant tornado parameter: -0.1
Supercell composite: -0.6

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

188 
WGUS53 KMPX 270414
FFWMPX
WIC017-033-035-091-109-270800-
/O.NEW.KMPX.FF.W.0009.100627T0414Z-100627T0800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1114 PM CDT SAT JUN 26 2010

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  DUNN COUNTY IN WEST CENTRAL WISCONSIN...
  EAU CLAIRE COUNTY IN WEST CENTRAL WISCONSIN...
  PEPIN COUNTY IN WEST CENTRAL WISCONSIN...
  SOUTHERN CHIPPEWA COUNTY IN WEST CENTRAL WISCONSIN...
  SOUTHERN ST. CROIX COUNTY IN WEST CENTRAL WISCONSIN...

* UNTIL 300 AM CDT

* AT 1112 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR 
  INDICATED THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE   
  WARNED AREA. RAINFALL RATES ARE IN THE 1 TO 2 INCH RANGE.  THESE 
  EXCESSIVE RAINFALL RATES COMBINED WITH NEAR SATURATED SOILS WILL
  CAUSE RAPID RUNOFF. 

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  CHIPPEWA FALLS...DURAND...EAU CLAIRE...MENOMONIE...ALTOONA...
  ARKANSAW...BALDWIN...BATEMAN...BLOOMER...BOYD...BRACKETT...
  BURKHARDT...CADOTT...CARYVILLE...COLFAX...EAGLETON...EAU GALLE...
  ELK MOUND...EMERALD...FAIRCHILD...FALL CREEK...FOSTER...GLENWOOD
  CITY...HAMMOND...HERSEY...HOULTON...JIM FALLS...KNAPP...LAKE HALLIE
  AND LAKE WISSOTA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...
COUNTRY ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND
OTHER LOW LYING AREAS ARE SUBJECT TO FLOODING.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. DO
NOT ENTER THE WATER. TURN AROUND AND MOVE UP TO HIGHER GROUND TO
ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN
WATER BEGINS RISING.

&&

LAT...LON 4513 9094 4459 9094 4460 9183 4460 9204
      4446 9212 4452 9227 4454 9213 4486 9211
      4489 9273 4507 9276

$$
DWE

1 follow-up statement

578 
WGUS73 KMPX 270730
FFSMPX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
230 AM CDT SUN JUN 27 2010

WIC017-033-035-091-109-270743-
/O.CAN.KMPX.FF.W.0009.000000T0000Z-100627T0800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CHIPPEWA WI-ST. CROIX WI-DUNN WI-EAU CLAIRE WI-PEPIN WI-
230 AM CDT SUN JUN 27 2010

...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR PEPIN...EAU
CLAIRE...DUNN...SOUTHERN ST. CROIX AND SOUTHERN CHIPPEWA COUNTIES IN
WEST CENTRAL WISCONSIN IS CANCELLED...

EXCESS RUNOFF FROM HEAVY RAIN HAS ENDED OVER THE WARNED AREA. STREAMS
AND CREEKS IN THE WARNED AREA HAVE RECEDED OR WERE BEGINNING TO 
RECEDE...ENDING THE FLOOD THREAT. 

LAT...LON 4513 9094 4459 9094 4460 9183 4460 9204
      4446 9212 4452 9227 4454 9213 4486 9211
      4489 9273 4507 9276

$$

The office that day

Everything else NWS Twin Cities, MN issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 26, 9:53 PM CDT	Severe Thunderstorm Warning	MPX	Pierce	82 min
Jun 26, 10:14 PM CDT	Areal Flood Advisory	MPX	Dunn, Pepin, Pierce	4 hr
Jun 26, 10:40 PM CDT	Severe Thunderstorm Warning	MPX	Dunn, Pepin, Pierce	61 min
Jun 26, 10:57 PM CDT	Flash Flood Warning	MPX	Pierce	3 hr
Jun 27, 12:31 AM CDT	Special Weather Statement	MPX	Dunn, Pepin, Pierce, Saint Croix	59 min

Nearby

Flash Flood Warnings in Wisconsin, 2010 Every flash flood warning in 2010

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.