Alert archive / Minnesota / Special Weather Statements in 2014

Special Weather Statement, NWS Twin Cities, MN

August 21, 2014Blue Earth County, Nicollet County, Minnesota

NWS Twin Cities, MN issued this special weather statement at Aug 21, 2014, 4:31 AM CDT for Blue Earth County, Nicollet County, Minnesota. It was in force for 59 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Aug 21, 2014, 4:31 AM CDT (09:31 UTC)
Expired: Aug 21, 2014, 5:30 AM CDT
In force: 59 min
Issued by: NWS Twin Cities, MN

Counties Blue Earth County, MN, Nicollet County, MN

The radar

The Minneapolis radar (KMPX), 87 km from the middle of the area, began a volume at 09:35 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, 9.5 hours before the alert went out and 85 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: 397 J/kg
Mixed-layer CIN: -58 J/kg
Mixed-layer LCL: 1160 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 19 m²/s²
0-3 km storm-relative helicity: 162 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Aug 21, 4:11 AM CDT, 20 minutes earlier.

Area forecast discussion, Aug 21, 4:11 AM CDT, 20 minutes before

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Hazardous weather outlook, Aug 20, 7:51 PM CDT, 8 hours 40 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
751 PM CDT WED AUG 20 2014

MNZ041>045-047>070-073>078-082>085-091>093-WIZ014>016-023>028-
220100-
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-
751 PM CDT WED AUG 20 2014

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

.DAY ONE...TONIGHT

SHOWERS AND THUNDERSTORMS WILL OCCUR OVERNIGHT WITH SOME STRONG
OR SEVERE STORMS...PARTICULARLY OVER SOUTHWESTERN MINNESOTA. ALL
STORMS WILL BE CAPABLE OF PRODUCING HEAVY RAIN AND LOCALIZED FLASH
FLOODING.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

HEAT INDICES WILL REACH 95 TO 100 DEGREES OVER PARTS OF CENTRAL
AND SOUTH CENTRAL MINNESOTA ON THURSDAY AFTERNOON...GENERALLY
FROM THE TWIN CITIES SOUTH TO THE IOWA BORDER AND WEST TO THE
SOUTH DAKOTA BORDER.

PERIODS OF THUNDERSTORMS ARE EXPECTED FROM THURSDAY THROUGH
TUESDAY...WITH THE HIGHEST CHANCES THURSDAY MORNING ACROSS EAST
CENTRAL MINNESOTA AND WESTERN WISCONSIN...AND AREA WIDE SATURDAY
AND SATURDAY NIGHT. THE THREAT FOR HEAVY RAIN AND LOCALIZED FLASH
FLOODING WILL ACCOMPANY THESE STORMS.

.SPOTTER INFORMATION STATEMENT...

SKYWARN SPOTTER ACTIVATION MAY BE NEEDED TONIGHT ACROSS
SOUTHWESTERN MINNESOTA.

JLT

In the hours before

Special weather statement, Aug 21, 12:24 AM CDT, 4 hours 7 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1224 AM CDT THU AUG 21 2014

MNZ054-210600-
LAC QUI PARLE-
1224 AM CDT THU AUG 21 2014

...THUNDERSTORMS DEVELOPING OVER LAC QUI PARLE COUNTY THROUGH 100 AM
CDT...

AT 1218 AM CDT...WEATHER SERVICE RADAR WAS TRACKING A STRONG
THUNDERSTORM 9 MILES SOUTHWEST OF MADISON...OR 11 MILES NORTHEAST OF
GARY. THIS STORM WAS MOVING NORTHEAST AT 40 MPH.

HAIL UP TO NICKEL SIZE...WINDS UP TO 40 MPH...AND HEAVY DOWNPOURS ARE
EXPECTED WITH THIS STORM.

* LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
  FLORIDA CREEK WILDLIFE MANAGEMENT AREA.
  MADISON AIRPORT.
  CERRO GORDO.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

&&

LAT...LON 4517 9609 4516 9605 4504 9590 4483 9624
      4490 9638
TIME...MOT...LOC 0524Z 223DEG 34KT 4494 9622

JRB

Special weather statement, Aug 21, 12:52 AM CDT, 3 hours 39 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1252 AM CDT THU AUG 21 2014

MNZ047-055-210645-
STEVENS-SWIFT-
1252 AM CDT THU AUG 21 2014

...HEAVY RAIN DEVELOPING OVER STEVENS AND SWIFT COUNTIES THROUGH 145
AM CDT...

AT 1250 AM CDT...WEATHER SERVICE RADAR WAS TRACKING A STRONG
THUNDERSTORM 7 MILES EAST OF CLINTON. THIS STORM WAS MOVING NORTHEAST
AT 30 MPH.

HAIL UP TO NICKEL SIZE...WINDS UP TO 40 MPH...AND HEAVY DOWNPOURS ARE
EXPECTED WITH THIS STORM.

* LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
  CHOKIO.
  LAKE HATTIE.
  ALBERTA.
  MORRIS AIRPORT.
  MORRIS.
  HANCOCK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMEMBER...DO NOT DRIVE THROUGH FLOODED ROADWAYS.

&&

LAT...LON 4576 9626 4577 9577 4551 9574 4541 9575
      4532 9613 4540 9613 4540 9624 4541 9626
TIME...MOT...LOC 0552Z 238DEG 28KT 4545 9629

JRB

Special weather statement, Aug 21, 2:50 AM CDT, 1 hour 41 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
250 AM CDT THU AUG 21 2014

MNZ073-074-082-091-210915-
BROWN-MARTIN-REDWOOD-WATONWAN-
250 AM CDT THU AUG 21 2014

...HEAVY RAIN CONTINUING OVER BROWN...MARTIN...REDWOOD AND WATONWAN
COUNTIES THROUGH 415 AM CDT...

AT 248 AM CDT...WEATHER SERVICE RADAR WAS TRACKING STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM 16 MILES SOUTH OF LOWER
SIOUX AGENCY TO 11 MILES SOUTH OF SLEEPY EYE TO 14 MILES EAST OF
BERGEN. THESE STORMS WERE MOVING EAST AT 20 MPH.

HAIL UP TO NICKEL SIZE AND HEAVY DOWNPOURS ARE EXPECTED WITH THESE
STORMS.

* LOCATIONS IN OR NEAR THE PATH OF THESE STORMS INCLUDE...
  ODIN.
  ECHOLS.
  WELCOME.
  ST JAMES.
  EVAN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR THE AREA.

&&

LAT...LON 4360 9487 4409 9487 4410 9509 4419 9511
      4420 9527 4441 9469 4434 9445 4428 9442
      4426 9437 4385 9437 4384 9424 4362 9425
TIME...MOT...LOC 0749Z 258DEG 19KT 4431 9505 4415 9478
          4379 9472

JRB

Special weather statement, Aug 21, 3:07 AM CDT, 1 hour 24 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
307 AM CDT THU AUG 21 2014

MNZ048-049-055>057-210930-
CHIPPEWA-KANDIYOHI-POPE-STEARNS-SWIFT-
307 AM CDT THU AUG 21 2014

...HEAVY RAIN CONTINUING OVER CHIPPEWA...KANDIYOHI...POPE...STEARNS
AND SWIFT COUNTIES THROUGH 430 AM CDT...

AT 303 AM CDT...WEATHER SERVICE RADAR WAS TRACKING STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM 8 MILES WEST OF BENSON TO
15 MILES SOUTHWEST OF MONSON LAKE STATE PARK TO 11 MILES NORTHWEST OF
OLIVIA. THESE STORMS WERE MOVING NORTHEAST AT 20 MPH.

HEAVY DOWNPOURS ARE EXPECTED WITH THESE STORMS.

* LOCATIONS IN OR NEAR THE PATH OF THESE STORMS INCLUDE...
  DANVERS.
  BENSON.
  WILLMAR
  RAYMOND.
  MURDOCK.
  KERKHOVEN.
  LAKE EMILY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

RAINFALL AMOUNTS 2 TO 4 ARE POSSIBLE FROM THE THUNDERSTORM. THIS MAY
RESULT IN BRIEF RUNOFF PROBLEMS AND PONDING OF WATER ON AREA
ROADWAYS.

&&

LAT...LON 4539 9575 4576 9575 4544 9477 4489 9476
      4489 9547 4475 9549 4477 9552 4479 9550
      4494 9575 4495 9581 4502 9587 4516 9605
      4517 9610 4521 9611
TIME...MOT...LOC 0806Z 243DEG 19KT 4535 9575 4513 9541
          4485 9518

JRB

Special weather statement, Aug 21, 4:31 AM CDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 21, 12:24 AM CDT	Special Weather Statement	MPX	Lac qui Parle	36 min
Aug 21, 12:52 AM CDT	Special Weather Statement	MPX	Stevens	53 min
Aug 21, 2:01 AM CDT	Areal Flood Warning	MPX	Stevens, Swift	6 hr
Aug 21, 2:33 AM CDT	Flash Flood Watch	MPX	Anoka, Blue Earth, Carver, Chippewa, Dakota, Douglas and 21 more	4 hr
Aug 21, 2:50 AM CDT	Special Weather Statement	MPX	Brown, Martin, Watonwan	85 min
Aug 21, 3:07 AM CDT	Special Weather Statement	MPX	Chippewa, Kandiyohi, Pope, Swift	83 min
Aug 21, 3:53 AM CDT	Areal Flood Warning	MPX	Brown, Watonwan	5 hr
Aug 21, 4:20 AM CDT	Severe Thunderstorm Warning	MPX	Martin	40 min
Aug 21, 4:47 AM CDT	Severe Thunderstorm Warning	MPX	Faribault	43 min
Aug 21, 5:10 AM CDT	Severe Thunderstorm Warning	MPX	Blue Earth, Faribault, Waseca	50 min
Aug 21, 7:16 AM CDT	Heat Advisory	MPX	Blue Earth, Brown, Carver, Dakota, Faribault, Freeborn and 14 more	13 hr
Aug 21, 6:20 PM CDT	Special Weather Statement	MPX	Watonwan	25 min

Nearby

Special Weather Statements in Minnesota, 2014 Every special weather statement in 2014

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.