Alert archive / Minnesota / Special Weather Statements in 2010

Special Weather Statement, NWS Twin Cities, MN

August 30, 20105 counties in Minnesota

NWS Twin Cities, MN issued this special weather statement at Aug 30, 2010, 9:31 PM CDT for 5 counties in Minnesota. It was in force for 74 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 30, 2010, 9:31 PM CDT (02:31 UTC)
Expired: Aug 30, 2010, 10:45 PM CDT
In force: 74 min
Issued by: NWS Twin Cities, MN

Counties Chippewa County, MN, Douglas County, MN, Pope County, MN, Stevens County, MN, Swift County, MN

The radar

The Minneapolis radar (KMPX), 181 km from the middle of the area, began a volume at 02:32 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

Aberdeen, SD (KABR), launched 00:00Z, 2.5 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.

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: 875 J/kg
Mixed-layer CIN: -64 J/kg
Mixed-layer LCL: 1007 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 147 m²/s²
0-3 km storm-relative helicity: 179 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 4.2

Open this sounding in Storm Lab

The text

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

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

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 30, 7:08 PM CDT, 2 hours 23 minutes earlier.

Area forecast discussion, Aug 30, 7:08 PM CDT, 2 hours 23 minutes before

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

Hazardous weather outlook, Aug 30, 6:17 PM CDT, 3 hours 14 minutes before

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
617 PM CDT MON AUG 30 2010

MNZ041>045-047>070-073>078-082>085-091>093-WIZ014>016-023>028-
311100-
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-
617 PM CDT MON AUG 30 2010

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

.DAY ONE...TONIGHT

THUNDERSTORM CHANCES WILL INCREASE ACROSS THE MINNESOTA PORTION OF
THE OUTLOOK AREA TONIGHT AS A COLD FRONT APPROACHES FROM THE
DAKOTAS. SOME OF THE STORMS ACROSS WEST CENTRAL...AND PARTS OF
CENTRAL MINNESOTA MAY BE SEVERE WITH DAMAGING WINDS AND LARGE HAIL.
THERE WILL ALSO BE TORRENTIAL DOWNPOURS WITH THE STORMS WHICH MAY
RESULT IN THE PONDING OF WATER IN LOW AREAS.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

SCATTERED THUNDERSTORMS WILL CONTINUE TUESDAY AND TUESDAY EVENING
ACROSS MOST OF THE OUTLOOK AREA...ALTHOUGH CHANCES FOR STORMS
WILL BE DECREASING OVER WESTERN MINNESOTA. SEVERE THUNDERSTORMS
WILL BE POSSIBLE AHEAD OF THE COLD FRONT OVER EASTERN AND SOUTHERN
MINNESOTA INTO WEST CENTRAL WISCONSIN. LARGE HAIL AND DAMAGING
WINDS WILL BE THE MAIN THREATS. THUNDERSTORM CHANCES RETURN FOR
WEDNESDAY NIGHT INTO THURSDAY AS A STRONG LOW PRESSURE TROUGH
MOVES ACROSS THE PLAINS.

.SPOTTER INFORMATION STATEMENT...

SKYWARN SPOTTER ACTIVATION MAY BE NEEDED TONIGHT AND AGAIN ON
TUESDAY.

RAH

In the hours before

Special weather statement, Aug 30, 7:52 PM CDT, 1 hour 39 minutes before

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

Special weather statement, Aug 30, 8:26 PM CDT, 1 hour 5 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
826 PM CDT MON AUG 30 2010

MNZ054>056-064-310300-
CHIPPEWA-LAC QUI PARLE-SWIFT-YELLOW MEDICINE-
826 PM CDT MON AUG 30 2010

...THUNDERSTORMS MOVING INTO WESTERN CHIPPEWA...LAC QUI
PARLE...WESTERN SWIFT AND YELLOW MEDICINE COUNTIES THROUGH 1000 PM
CDT...

AT 822 PM CDT...WEATHER SERVICE RADAR WAS TRACKING STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM WAVERLY SOUTH DAKOTA TO
TEN MILES WEST OF BROOKINGS SOUTH DAKOTA. THESE STORMS WERE MOVING
NORTHEAST AT 60 MPH.

WINDS UP TO 50 MPH ARE POSSIBLE WITH THESE STORMS.

* LOCATIONS IN OR NEAR THE PATH OF THESE STORMS INCLUDE...
  NASSAU.
  BELLINGHAM.
  BURR.
  CANBY.
  CERRO GORDO.
  PROVIDENCE.
  MILAN.
  MADISON.
  DAWSON.
  APPLETON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THE GUSTY WINDS WILL BE CAPABLE OF KNOCKING DOWN SMALL TREES...TREE
LIMBS...AND POWERLINES. SEEK SAFE SHELTER UNTIL THE STORM HAS PASSED.

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

RAINFALL AMOUNTS OF ONE HALF TO ONE AND A HALF INCHES ARE POSSIBLE
FROM THESE THUNDERSTORMS THROUGH EARLY OVERNIGHT. THIS MAY RESULT IN
BRIEF RUNOFF PROBLEMS AND PONDING OF WATER ON AREA ROADWAYS.

A TORNADO WATCH REMAINS IN EFFECT FOR THE AREA THROUGH 200 AM
TUESDAY MORNING.

&&

LAT...LON 4527 9646 4528 9643 4526 9632 4520 9612
      4541 9613 4541 9574 4533 9570 4494 9573
      4464 9583 4462 9645 4476 9647
TIME...MOT...LOC 0122Z 233DEG 52KT 4514 9683 4453 9693
          4414 9701

Special weather statement, Aug 30, 9:31 PM CDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
931 PM CDT MON AUG 30 2010

MNZ041-047-048-054>056-064-310345-
CHIPPEWA-DOUGLAS-LAC QUI PARLE-POPE-STEVENS-SWIFT-YELLOW MEDICINE-
931 PM CDT MON AUG 30 2010

...THUNDERSTORMS MOVING ACROSS CHIPPEWA...DOUGLAS...EASTERN LAC QUI
PARLE...POPE...STEVENS...SWIFT AND EASTERN YELLOW MEDICINE COUNTIES
THROUGH 1045 PM CDT...

AT 926 PM CDT...WEATHER SERVICE RADAR WAS TRACKING STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM ELBOW LAKE TO CORRELL TO
BOYD. THESE STORMS WERE MOVING NORTHEAST AT 50 MPH.

WINDS UP TO 50 MPH HAVE BEEN OBSERVED AND ARE EXPECTED WITH THESE
STORMS.

* LOCATIONS IN OR NEAR THE PATH OF THESE STORMS INCLUDE...
  CERRO GORDO.
  BOYD.
  MILAN.
  BIG BEND CITY.
  MELBY.
  ASBURY.
  MORRIS.
  BENSON.
  EVANSVILLE.
  MONTEVIDEO.
  ALEXANDRIA.
  GLENWOOD.
  INTERSTATE 94 IN DOUGLAS COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

THE GUSTY WINDS WILL BE CAPABLE OF KNOCKING DOWN SMALL TREES...TREE
LIMBS...AND POWERLINES. SEEK SAFE SHELTER UNTIL THE STORM HAS PASSED.

A TORNADO WATCH REMAINS IN EFFECT FOR THE AREA THROUGH 200 AM CDT.

RAINFALL AMOUNTS OF ONE HALF TO ONE AND A HALF INCHES ARE LIKELY
FROM THESE THUNDERSTORMS. THIS MAY RESULT IN BRIEF RUNOFF PROBLEMS
AND PONDING OF WATER ON AREA ROADWAYS.

&&

LAT...LON 4519 9614 4520 9612 4540 9614 4541 9620
      4577 9611 4577 9577 4609 9578 4612 9572
      4611 9515 4542 9513 4541 9525 4537 9527
      4489 9525 4489 9548 4481 9549 4479 9596
      4521 9621
TIME...MOT...LOC 0226Z 237DEG 43KT 4593 9595 4533 9612
          4482 9591

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 30, 7:52 PM CDT	Special Weather Statement	MPX	Stevens	68 min
Aug 30, 8:26 PM CDT	Special Weather Statement	MPX	Lac qui Parle, Yellow Medicine	94 min
Aug 30, 10:09 PM CDT	Special Weather Statement	MPX	Kandiyohi, Todd	66 min
Aug 30, 11:11 PM CDT	Special Weather Statement	MPX	Benton, Morrison, Stearns	64 min
Aug 30, 11:54 PM CDT	Special Weather Statement	MPX	Chippewa, Lac qui Parle, Yellow Medicine	51 min
Aug 30, 11:59 PM CDT	Severe Thunderstorm Warning	MPX	Lac qui Parle, Yellow Medicine	45 min
Aug 31, 1:24 AM CDT	Special Weather Statement	MPX	Stearns	36 min
Aug 31, 1:34 AM CDT	Special Weather Statement	MPX	Stearns	41 min
Aug 31, 2:34 AM CDT	Special Weather Statement	MPX	Isanti, Sherburne, Wright	41 min
Aug 31, 3:30 PM CDT	Special Weather Statement	MPX	Blue Earth, Faribault, Freeborn, Martin, Steele, Waseca	75 min
Aug 31, 4:49 PM CDT	Special Weather Statement	MPX	Faribault, Freeborn	56 min
Aug 31, 4:52 PM CDT	Areal Flood Advisory	MPX	Blue Earth, Faribault, Freeborn, Goodhue, Rice, Steele and 1 more	4 hr
Aug 31, 5:12 PM CDT	Severe Thunderstorm Warning	MPX	Freeborn	39 min
Aug 31, 5:32 PM CDT	Special Weather Statement	MPX	Goodhue	43 min
Aug 31, 5:59 PM CDT	Special Weather Statement	MPX	Pierce	46 min
Aug 31, 6:04 PM CDT	Areal Flood Advisory	MPX	Chippewa, Dunn, Eau Claire, Pepin, Pierce, Rusk	3 hr
Aug 31, 6:05 PM CDT	Severe Thunderstorm Warning	MPX	Pepin, Pierce	40 min
Aug 31, 6:45 PM CDT	Special Weather Statement	MPX	Eau Claire, Pepin	30 min

Nearby

Special Weather Statements in Minnesota, 2010 Every special weather statement 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.