Alert archive / Wisconsin / Special Weather Statements in 2009

Special Weather Statement, NWS Twin Cities, MN

July 22, 2009Polk County, Wisconsin

NWS Twin Cities, MN issued this special weather statement at Jul 22, 2009, 2:46 PM CDT for Polk County, Wisconsin. It was in force for 44 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: Jul 22, 2009, 2:46 PM CDT (19:46 UTC)
Expired: Jul 22, 2009, 3:30 PM CDT
In force: 44 min
Issued by: NWS Twin Cities, MN

County Polk County, WI

The radar

The Minneapolis radar (KMPX), 122 km from the middle of the area, began a volume at 19:47 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, 7.8 hours before the alert went out and 124 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: 257 J/kg
Mixed-layer CIN: -80 J/kg
Mixed-layer LCL: 1123 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 18 m²/s²
0-3 km storm-relative helicity: 36 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 Jul 22, 2:08 PM CDT, 38 minutes earlier.

Area forecast discussion, Jul 22, 2:08 PM CDT, 38 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
208 PM CDT WED JUL 22 2009

.DISCUSSION...
EXPECT SCATTERED SHOWERS AND THUNDERSTORMS TO DEVELOP AGAIN THIS
AFTERNOON...AS INSTABILITY INCREASES AND A SHORTWAVE MOVES ACROSS
CENTRAL MN. THE LOW FREEZING LEVEL HEIGHT OF ABOUT 8500-9000 FEET
WILL BE CONDUCIVE TO A HAIL THREAT WITH THE THUNDERSTORMS THAT
DEVELOP. FUNNEL CLOUD REPORTS ALSO MAKE SENSE GIVEN THE AXIS OF
SURFACE VORTICITY THAT LIES ALONG THE WEAK TROUGH EXTENDING FROM
NEAR MORA...TO THE TWIN CITIES...TO MANKATO. HOWEVER...THE STORMS
THUS FAR HAVE QUICKLY BECOME OUTFLOW DOMINATED...WHICH MINIMIZES
THE TOUCHDOWN THREAT.

CONVECTIVE ACTIVITY WILL WANE AFTER SUNSET...WITH THE NEXT CHANCE
OF SHRA/TS ARRIVING LATE THURSDAY AND FRIDAY AS A MID LEVEL LOW
DIVES SOUTHEAST FROM MANITOBA ACROSS NORTHERN MINNESOTA...AND
PUSHES A COLD FRONT ACROSS THE UPPER MIDWEST. ALTHOUGH THE FRONT
WILL BE PAST THE FORECAST AREA BY SATURDAY...THE AFOREMENTIONED
LOW WILL SPIN OVER THE GREAT LAKES REGION THROUGH THE WEEKEND AND
BRING THE POTENTIAL FOR ISOLATED SHOWERS AND
THUNDERSTORMS...MAINLY ACROSS WEST CENTRAL WISCONSIN ON SATURDAY
AFTERNOON. OTHER THAN A ROGUE SHOWER OR TWO IN WEST CENTRAL
WI...EXPECT SUNDAY TO BE A DRY DAY.

BY NEXT WEEK...THE GREAT LAKES LOW WILL BECOME PART OF THE LARGER LOW
DOMINATING CANADA. THE WESTERN PERIPHERY OF THE LOW WILL PIVOT
SOUTH ACROSS THE NORTH CENTRAL CONUS DURING THE FIRST HALF OF THE
UPCOMING WEEK. THIS WILL TRANSLATE TO SPORADIC PRECIPITATION
OPPORTUNITIES AS EMBEDDED IMPULSES MOVE ACROSS THE REGION...ALONG
WITH BELOW NORMAL TEMPERATURES. HIGHS WILL LIKELY NOT ESCAPE THE
70S ACROSS MUCH OF THE FORECAST AREA FROM WEDNESDAY THROUGH
MONDAY. HAVE ALSO RETAINED 20-30 POPS FROM MONDAY THROUGH
WEDNESDAY.

&&

.AVIATION.../18Z TAF ISSUANCE/

DISTURBED UPPER LEVEL PATTERN REMAINS OVER THE AREA THROUGH EARLY
EVE. COUPLED WITH A WEAK SFC BOUNDARY OFFERING LOW LEVEL
CONVERGENCE AND POOLING OF INSTABILITY...SCATTERED THUNDERSTORMS
ARE ALREADY DEVELOPING IN NRN MN AND WI. THESE SHOULD EVOLVE
SOUTH INTO ERN MN AND WRN WI THROUGH MID AFTN. WITH THE TIMING OF
THESE IN THE FIRST SIX TO NINE HOURS...HAVE FOCUSED THE WINDOW ON
MENTIONING RAIN AT ERN MN AND WRN WI TAF SITES. HAVE HIGHLIGHTED
THUNDER IN THE WI TAF SITES BUT IS VERY POSSIBLE AT ERN MN SITES
DUE TO THE LOW FREEZING LEVELS OFFERING SUFFICIENT CHARGE
DISTRIBUTION FOR LIGHTNING. THERE COULD ALSO BE AT LEAST SOME
SMALL HAIL WITH ANY STORMS THIS AFTN. ALL IN ALL...COVERAGE SHOULD
BE NEAR 20-30 PERCENT IN ERN MN TO 30-50 PERCENT IN WRN WI. STORMS
WILL FADE WITH THE LOSS OF HEATING INTO THE EVENING. WINDS WILL BE
SOMEWHAT VARIABLE AT TIMES THIS AFTN AND BE GUSTY NEAR ANY STORMS.
THESE WILL BECOME VERY LIGHT ONCE AGAIN TONIGHT AND WITH RESIDUAL
MOISTURE IN THE WAKE OF THE SCT SHOWERS THIS AFTN AND EVE...SOME
FOG IS AGAIN POSSIBLE IN ERN MN AND WRN WI. NOT AS IDEAL OF A
SETUP...BUT SOME DENSE FOG NEAR WI TAF SITES IS POSSIBLE. SW WINDS
INCREASING TOMORROW AHEAD OF THE SYSTEM DROPPING SOUTHEAST FROM
THE INTERNATIONAL BORDER.

&&

.MPX WATCHES/WARNINGS/ADVISORIES...
MN...NONE.
WI...NONE.
&&

LS/MTF

Hazardous weather outlook, Jul 22, 12:14 PM CDT, 2 hours 32 minutes before

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1214 PM CDT WED JUL 22 2009

MNZ041>045-047>070-073>078-082>085-091>093-WIZ014>016-023>028-
231200-
DOUGLAS-TODD-MORRISON-MILLE LACS-KANABEC-STEVENS-POPE-STEARNS-
BENTON-SHERBURNE-ISANTI-CHISAGO-LAC QUI PARLE-SWIFT-CHEXT SEVERAL DAYS...ALONG
WITH AGAIN EARLY NEXT WEEK. THE HIGHEST CHANCE OF ORGANIZED AND
WIDESPREAD THUNDERSTORMS WILL OCCUR LATE THURSDAY NIGHT AND INTO
FRIDAY. AT THIS TIME...THE THREAT FOR WIDESPREAD HAZARDOUS WEATHER
IS LOW.

.SPOTTER INFORMATION STATEMENT...

ALTHOUGH THE SEVERE THUNDERSTORM THREAT IS MARGINAL
THIS AFTERNOON AND EARLY EVENING...SPOTTERS SHOULD REMAIN ALERT
FOR STRONGER THUNDERSTORMS AND BE READY TO REPORT HAIL.

In the hours before

Local storm report, Jul 22, 1:26 PM CDT, 1 hour 20 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
126 PM CDT WED JUL 22 2009

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0125 PM     FUNNEL CLOUD     WINSTED                 44.97N 94.05W
07/22/2009                   MCLEOD             MN   TRAINED SPOTTER

            FUNNEL HALF WAY TO GROUND.

&&

AJZ

Local storm report, Jul 22, 1:31 PM CDT, 1 hour 15 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
131 PM CDT WED JUL 22 2009

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0130 PM     FUNNEL CLOUD     WINSTED                 44.97N 94.05W
07/22/2009                   MCLEOD             MN   TRAINED SPOTTER

            FUNNEL CLOUD ROPING OUT, STILL HALF WAY TO THE GROUND.

&&

AJZ

Special weather statement, Jul 22, 1:37 PM CDT, 1 hour 9 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
137 PM CDT WED JUL 22 2009

MNZ051-059-060-066>070-075>077-221930-
CARVER-DAKOTA-HENNEPIN-LE
SUEUR-MCLEOD-NICOLLET-RICE-SCOTT-SHERBURNE-SIBLEY-WRIGHT-
137 PM CDT WED JUL 22 2009

...THUNDERSTORMS WITH SMALL HAIL AND FUNNEL CLOUDS DEVELOPING OVER
PORTIONS OF CENTRAL MINNESOTA THROUGH 230 PM CDT...

AT 134 PM CDT...WEATHER SERVICE RADAR WAS TRACKING STRONG
THUNDERSTORMS FROM CLEARWATER TO WACONIA SOUTH TO NICOLETT. THESE
STORMS WERE MOVING EAST SOUTHEAST AT 10 MPH. HAIL UP TO DIME SIZE
AND WINDS UP TO 40 MPH ARE EXPECTED WITH THESE STORMS. ALSO...FUNNEL
CLOUDS REPORTS HAVE BEEN FREQUENT WITH THESE THUNDERSTORMS. THE
ATMOSPHERE IS NOT FAVORABLE FOR A TORNADO TOUCHDOWN AT THIS TIME.
HOWEVER...IF YOU DO SEE A TORNADO TOUCHDOWN...TAKE COVER IMMEDIATELY.

* LOCATIONS IN OR NEAR THE PATH OF THESE STORMS INCLUDE...
  LORETTO.
  WAYZATA.
  WOODLAND.
  ST HENRY.
  VESELI.
  WEBSTER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO THE
STORM TO BE STRUCK BY LIGHTNING. SEEK SAFE SHELTER IMMEDIATELY.

&&

LAT...LON 4439 9452 4486 9432 4551 9387 4545 9377
      4493 9320 4491 9320 4480 9302 4477 9300
      4477 9296 4467 9277 4442 9324 4422 9407
TIME...MOT...LOC 1834Z 293DEG 62KT 4521 9351 4478 9385
          4426 9427

Local storm report, Jul 22, 1:38 PM CDT, 1 hour 8 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
138 PM CDT WED JUL 22 2009

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0127 PM     FUNNEL CLOUD     2 E STOCKHOLM           45.04N 94.18W
07/22/2009                   WRIGHT             MN   LAW ENFORCEMENT

            INTERSECTION OF COUNTY ROAD 30 AND 3. POSSIBLY SAME
            FUNNEL SEEN NEAR WINSTED AND SILVER LAKE.

&&

SPD

Local storm report, Jul 22, 1:41 PM CDT, 1 hour 5 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
141 PM CDT WED JUL 22 2009

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0130 PM     FUNNEL CLOUD     3 S MONTROSE            45.02N 93.91W
07/22/2009                   WRIGHT             MN   LAW ENFORCEMENT

&&

SPD

Special weather statement, Jul 22, 2:46 PM CDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
246 PM CDT WED JUL 22 2009

WIZ014-222030-
POLK-
246 PM CDT WED JUL 22 2009

...STRONG THUNDERSTORMS DEVELOPING OVER POLK COUNTY THROUGH 330 PM
CDT...

AT 244 PM CDT...WEATHER SERVICE RADAR WAS TRACKING A STRONG
THUNDERSTORM 6 MILES NORTH OF RANGE. THIS STORM WAS MOVING SOUTHEAST
AT 10 MPH.

HAIL UP TO NICKEL SIZE AND WIND GUSTS TO 40 MPH ARE EXPECTED WITH
THIS STORM.

* LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
  RANGE.
  JOEL.
  CLAYTON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO THE
STORM TO BE STRUCK BY LIGHTNING. SEEK SAFE SHELTER IMMEDIATELY.

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

&&

LAT...LON 4550 9215 4532 9216 4531 9216 4536 9239
      4547 9243 4558 9231
TIME...MOT...LOC 1946Z 298DEG 9KT 4547 9232

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 21, 8:58 PM CDT	Special Weather Statement	MPX	Freeborn	47 min
Jul 22, 1:24 PM CDT	Special Weather Statement	MPX	Carver	51 min
Jul 22, 1:37 PM CDT	Special Weather Statement	MPX	Carver, Dakota, Hennepin, Le Sueur, McLeod, Nicollet and 3 more	53 min
Jul 22, 2:20 PM CDT	Severe Thunderstorm Warning	MPX	Le Sueur, Scott	24 min
Jul 22, 4:37 PM CDT	Special Weather Statement	MPX	Ramsey	23 min
Jul 22, 4:59 PM CDT	Special Weather Statement	MPX	Ramsey, Washington	46 min
Jul 22, 3:43 PM CDT	Special Weather Statement	MPX	Barron	47 min
Jul 22, 5:16 PM CDT	Special Weather Statement	MPX	Saint Croix	44 min
Jul 22, 5:34 PM CDT	Special Weather Statement	MPX	Polk	41 min
Jul 22, 5:58 PM CDT	Special Weather Statement	MPX	Saint Croix	32 min

Nearby

Special Weather Statements in Wisconsin, 2009 Every special weather statement in 2009

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.