Alert archive / Minnesota / Areal Flood Warnings in 2010

Areal Flood Warning 19, NWS Twin Cities, MN

September 22, 2010Faribault County, Freeborn County, Martin County, Minnesota

NWS Twin Cities, MN issued this areal flood warning at Sep 22, 2010, 4:30 PM CDT for Faribault County, Freeborn County, Martin County, Minnesota. It was in force for 9 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Sep 22, 2010, 4:30 PM CDT (21:30 UTC)
Expired
Sep 23, 2010, 1:30 AM CDT
In force
9 hr
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon
Flood severity
None

Counties Faribault County, MN, Freeborn County, MN, Martin County, MN

The radar

The Minneapolis radar (KMPX), 134 km from the middle of the area, began a volume at 21:32 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 12:00Z, 9.5 hours before the alert went out and 134 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-pSkew-T log-p diagram, Minneapolis, MN at 12:00Z on 2010-09-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 12:00Z on 2010-09-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -25 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1121 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
-25 m²/s²
0-3 km storm-relative helicity
40 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this areal flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Twin Cities, MN wrote its last area forecast discussion before this areal flood warning went out at Sep 22, 3:17 PM CDT, 1 hour 13 minutes earlier.

Area forecast discussion, Sep 22, 3:17 PM CDT, 1 hour 13 minutes before
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Hazardous weather outlook, Sep 22, 4:03 PM CDT, 27 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
403 PM CDT WED SEP 22 2010

MNZ041>045-047>070-073>078-082>085-091>093-WIZ014>016-023>028-
232115-
DOUGLAS-TODD-MORRISON-MILLE LACS-KANABEC-STEVENS-POPE-STEARNS-
BENTON-SHERBURNE-ISANTI-CHISAGO-LAC QUI PARLE-SWIFT-CHIPPEWA-
KANDIYOHI-MEEKER-WRIGHT-HENNEPIN-ANOKA-RAMSEY-WASHINGTON-
YELLOW MEDICINE-RENVILLE-MCLEOD-SIBLEY-CARVER-SCOTT-DAKOTA-
REDWOOD-BROWN-NICOLLET-LE SUEUR-RICE-GOODHUE-WATONWAN-BLUE EARTH-
WASECA-STEELE-MARTIN-FARIBAULT-FREEBORN-POLK-BARRON-RUSK-
ST. CROIX-PIERCE-DUNN-PEPIN-EAU CLAIRE-
403 PM CDT WED SEP 22 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL AND
SOUTHERN MINNESOTA...AND WEST CENTRAL WISCONSIN.

.DAY ONE...REST OF THIS AFTERNOON AND TONIGHT

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FOR LATE THIS
AFTERNOON INTO TONIGHT FOR LOCATIONS ALONG AND SOUTH OF INTERSTATE
94. THE PRIMARY THREATS WITH THIS ACTIVITY WILL BE LARGE HAIL AND
HEAVY RAINFALL. HOWEVER... LOCALIZED DAMAGING WINDS ARE POSSIBLE
THROUGH THIS EVENING. THUNDERSTORMS WILL BE MOST PREVALENT ALONG
AND SOUTH OF INTERSTATE 90 THROUGH EARLY EVENING... WITH ACTIVITY
BECOMING MORE WIDESPREAD OVER THE REMAINDER OF THE AREA AS THE
NIGHT PROGRESSES.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

THUNDERSTORMS WILL CONTINUE ACROSS THE OUTLOOK AREA INTO THURSDAY
AS A STRONG AREA OF LOW PRESSURE MOVES INTO CENTRAL MINNESOTA.
THIS LOW WILL SEND A COLD FRONT ACROSS THE AREA THURSDAY
AFTERNOON AND NIGHT. THIS WILL CONTINUE THE HEAVY RAIN AND FLOOD
THREAT FOR THE AREA. IN ADDITION... A FEW SEVERE THUNDERSTORMS
WILL BE POSSIBLE AHEAD OF THE COLD FRONT THURSDAY AFTERNOON AND
NIGHT ACROSS SOUTH CENTRAL AND EAST CENTRAL MINNESOTA INTO WEST
CENTRAL WISCONSIN... WITH THE GREATEST LIKELIHOOD FOR SEVERE WEATHER
ACROSS SOUTH CENTRAL MINNESOTA. THE PRIMARY THREAT FROM ANY
ACTIVITY ON THURSDAY WILL BE DAMAGING STRAIGHT LINE WINDS.

HEAVY RAINFALL EXPECTED FROM TODAY THROUGH THURSDAY NIGHT WILL
LEAD TO RISES ON MANY LOCAL STREAMS AND RIVERS. THIS MAY RESULT IN
SEVERAL RIVERS REACHING OR EXCEEDING FLOOD STAGE... ESPECIALLY
ACROSS CENTRAL MINNESOTA INTO WEST CENTRAL WISCONSIN... FROM LATER
THIS WEEK INTO NEXT WEEK.

.SPOTTER INFORMATION STATEMENT...

SKYWARN SPOTTER ACTIVATION IS IN PROGRESS FOR PORTIONS OF THE
AREA... WITH ADDITIONAL ACTIVATION POSSIBLE TONIGHT.

In the hours before

Special weather statement, Sep 22, 3:16 PM CDT, 1 hour 14 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
316 PM CDT WED SEP 22 2010

MNZ084-085-092-093-222100-
FARIBAULT-FREEBORN-STEELE-WASECA-
316 PM CDT WED SEP 22 2010

...STRONG HEAVY RAIN PRODUCING THUNDERSTORMS MOVING OVER
FARIBAULT...FREEBORN...STEELE AND WASECA COUNTIES THROUGH 400 PM
CDT...

AT 315 PM CDT...WEATHER SERVICE RADAR WAS TRACKING A STRONG
THUNDERSTORM 5 MILES NORTHWEST OF BRUSH CREEK. THIS STORM WAS MOVING
EAST AT 35 MPH.

HAIL UP TO DIME SIZE...WINDS UP TO 45 MPH...AND VERY HEAVY RAINFALL
ARE EXPECTED WITH THIS STORM.

* LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
  EASTON.
  WELLS.
  WALDORF.
  FREEBORN.
  OTISCO.
  HARTLAND.
  ALBERT LEA.
  OWATONNA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

RAINFALL AMOUNTS OF ONE HALF TO ONE AND A HALF INCHES ARE PROBABLE
FROM THE THUNDERSTORM BY 430 PM. THIS MAY RESULT IN BRIEF RUNOFF
PROBLEMS AND PONDING OF WATER ON AREA ROADWAYS.

THIS THUNDERSTORM COULD INTENSIFY QUICKLY...SO BE READY TO ACT IF A
WARNING IS ISSUED.

&&

LAT...LON 4385 9405 4385 9378 4393 9377 4409 9319
      4361 9314 4359 9397
TIME...MOT...LOC 2015Z 257DEG 31KT 4375 9383
Special weather statement, Sep 22, 4:13 PM CDT, 17 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
413 PM CDT WED SEP 22 2010

MNZ064>067-073>076-082-083-222215-
YELLOW MEDICINE-RENVILLE-MCLEOD-SIBLEY-REDWOOD-BROWN-NICOLLET-
LE SUEUR-WATONWAN-BLUE EARTH-
INCLUDING THE CITIES OF...GRANITE FALLS...OLIVIA...HUTCHINSON...
GAYLORD...REDWOOD FALLS...NEW ULM...ST. PETER...LE SUEUR...
ST. JAMES...MANKATO
413 PM CDT WED SEP 22 2010

...STRONG WINDS LIKELY THROUGH 515 PM ACROSS PARTS OF SOUTHWEST
AND SOUTH CENTRAL MINNESOTA...

STRONG SOUTHEAST WINDS OF 35 TO 50 MPH WILL OCCUR ACROSS PORTIONS
OF SOUTHWEST AND SOUTH CENTRAL MINNESOTA...INCLUDING ALONG THE
MINNESOTA RIVER VALLEY. WIND GUSTS OF 46 MPH HAVE BEEN OBSERVED
NEAR 400 PM AT MARSHALL AND REDWOOD FALLS...ALONG WITH SEVERAL
OTHER GUSTS NEAR 35 MPH. CONDITIONS ARE FAVORABLE FOR THESE GUSTS
TO CONTINUE ACROSS THE AREA THROUGH 515 PM. EMBEDDED
THUNDERSTORMS WITHIN THE RAIN MAY PRESENT EVEN STRONGER WINDS.
WHILE THESE BROAD SCALE STRONG WINDS WILL LIKELY SUBSIDE BY THE
END OF THE AFTERNOON....THE RISK FOR SOME SEVERE THUNDERSTORMS
WILL LAST INTO THE EVENING. THESE WINDS ARE BEING CAUSED BY WHAT
IS COMMONLY REFERRED TO AS A WAKE LOW NEAR AREAS OF SHOWERS AND
THUNDERSTORMS.

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 22, 4:00 AM CDTFlood WatchMPXAnoka, Benton, Blue Earth, Brown, Carver, Chippewa and 36 more46 hr
Sep 22, 11:18 AM CDTRiver Flood WarningMPXBlue Earth, Brown, Nicollet20 days
Sep 22, 11:50 AM CDTRiver Flood WatchMPXRedwood9 hr
Sep 22, 11:50 AM CDTRiver Flood WatchMPXBlue Earth, Brown, Nicollet9 hr
Sep 22, 11:50 AM CDTRiver Flood WatchMPXChippewa, Lac qui Parle, Renville, Yellow Medicine52 hr
Sep 22, 11:50 AM CDTRiver Flood WatchMPXBlue Earth, Brown, Nicollet21 min
Sep 22, 11:50 AM CDTRiver Flood WatchMPXCarver, Scott45 hr
Sep 22, 11:50 AM CDTRiver Flood WatchMPXCarver, Hennepin, Scott45 hr
Sep 22, 3:16 PM CDTSpecial Weather StatementMPXFaribault, Freeborn, Steele44 min
Sep 22, 4:37 PM CDTAreal Flood AdvisoryMPXBlue Earth, Steele, Waseca, Watonwan8 hr
Sep 22, 6:39 PM CDTAreal Flood AdvisoryMPXBrown, Le Sueur, Nicollet, Redwood, Rice6 hr
Sep 22, 6:44 PM CDTSevere Thunderstorm WarningMPXMartin, Watonwan61 min
Sep 22, 11:18 AM CDTRiver Flood WarningMPXEau Claire5 days
Sep 22, 11:18 AM CDTRiver Flood WarningMPXEau Claire4 days
Sep 22, 11:18 AM CDTRiver Flood WarningMPXBuffalo, Pepin7 days

Nearby

Areal Flood Warnings in Minnesota, 2010Every areal 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.