Alert archive / Wisconsin / Special Weather Statements in 2015

Special Weather Statement, NWS Twin Cities, MN

August 22, 2015Saint Croix County, Wisconsin

NWS Twin Cities, MN issued this special weather statement at Aug 22, 2015, 7:18 PM CDT for Saint Croix County, Wisconsin. It was in force for 27 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 22, 2015, 7:18 PM CDT (00:18 UTC)
Expired
Aug 22, 2015, 7:45 PM CDT
In force
27 min
Issued by
NWS Twin Cities, MN

County Saint Croix County, WI

The radar

The Minneapolis radar (KMPX), 96 km from the middle of the area, began a volume at 00:20 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

Green Bay/Straub, WI (KGRB), launched 00:00Z, 0.3 hours before the alert went out and 345 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, Green Bay/Straub, WI at 00:00Z on 2015-08-23Temperature 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, Green Bay/Straub, WI at 00:00Z on 2015-08-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 65 square meters per square second.1939Sfc1 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
1692 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
65 m²/s²
0-3 km storm-relative helicity
57 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 22, 6:38 PM CDT, 40 minutes earlier.

Area forecast discussion, Aug 22, 6:38 PM CDT, 40 minutes before
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Hazardous weather outlook, Aug 22, 6:53 PM CDT, 25 minutes before
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In the hours before

Special weather statement, Aug 22, 4:59 PM CDT, 2 hours 19 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
459 PM CDT SAT AUG 22 2015

MNZ043-044-050-222245-
MORRISON-BENTON-MILLE LACS-
459 PM CDT SAT AUG 22 2015

...A STRONG THUNDERSTORM WILL AFFECT SOUTHWESTERN MILLE LACS...
SOUTHEASTERN MORRISON AND EASTERN BENTON COUNTIES...

AT 459 PM CDT...A STRONG THUNDERSTORM WAS OVER PARENT...OR 10 MILES
EAST OF ST. CLOUD...MOVING NORTHEAST AT 50 MPH.

WINDS IN EXCESS OF 40 MPH AND NICKEL SIZE HAIL ARE POSSIBLE WITH THIS
STORM.

LOCATIONS IMPACTED INCLUDE...
SAUK RAPIDS...MILACA...FOLEY...FORESTON...GRANITE LEDGE...MORRILL...
GILMAN...OAK PARK...RONNEBY...PARENT...DUELM AND RUM RIVER.

THIS INCLUDES U.S. HIGHWAY 169 BETWEEN MILE MARKERS 193 AND 201.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM CDT FOR EAST CENTRAL
MINNESOTA.

LAT...LON 4585 9353 4555 9393 4555 9396 4560 9414
      4599 9390
TIME...MOT...LOC 2159Z 223DEG 43KT 4560 9397

CLF
Local storm report, Aug 22, 5:07 PM CDT, 2 hours 11 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
507 PM CDT SAT AUG 22 2015

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

0440 PM     TSTM WND DMG     EVANSVILLE              46.01N 95.68W
08/22/2015                   DOUGLAS            MN   PUBLIC

            TREES DOWN. REPORT RELAYED THROUGH LAW ENFORCEMENT.

&&

CARLYON
Special weather statement, Aug 22, 5:18 PM CDT, 2 hours before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
518 PM CDT SAT AUG 22 2015

MNZ043-044-222245-
MORRISON-MILLE LACS-
518 PM CDT SAT AUG 22 2015

...A STRONG THUNDERSTORM WILL AFFECT NORTHWESTERN MILLE LACS AND
NORTHEASTERN MORRISON COUNTIES...

AT 517 PM CDT...A STRONG THUNDERSTORM WAS NEAR VINELAND...OR 23 MILES
SOUTHEAST OF BRAINERD...MOVING NORTHEAST AT 50 MPH.

WINDS IN EXCESS OF 40 MPH AND DIME SIZE HAIL ARE POSSIBLE WITH THIS
STORM.

LOCATIONS IMPACTED INCLUDE...
VINELAND AND MILLE LACS LAKE.

THIS INCLUDES U.S. HIGHWAY 169 BETWEEN MILE MARKERS 219 AND 229.

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

IF YOU ARE ON OR NEAR MILLE LACS LAKE...GET OUT OF THE WATER AND
MOVE INDOORS OR INSIDE A VEHICLE. REMEMBER...LIGHTNING CAN STRIKE
OUT TO 15 MILES FROM THE PARENT THUNDERSTORM. IF YOU CAN HEAR
THUNDER... YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. MOVE TO
SAFE SHELTER NOW. DO NOT BE CAUGHT ON THE WATER IN A THUNDERSTORM.

LAT...LON 4606 9379 4608 9385 4613 9397 4616 9396
      4616 9381 4624 9381 4625 9374 4624 9351
TIME...MOT...LOC 2217Z 216DEG 48KT 4613 9381

CLF
Special weather statement, Aug 22, 5:56 PM CDT, 1 hour 22 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
556 PM CDT SAT AUG 22 2015

MNZ061-062-222315-
ANOKA-RAMSEY-
556 PM CDT SAT AUG 22 2015

...A STRONG THUNDERSTORM WILL AFFECT NORTHERN RAMSEY AND SOUTHEASTERN
ANOKA COUNTIES...

AT 556 PM CDT...A STRONG THUNDERSTORM WAS OVER HILLTOP...OR NEAR
MINNEAPOLIS...MOVING NORTHEAST AT 45 MPH.

WINDS IN EXCESS OF 30 MPH AND NICKEL SIZE HAIL ARE POSSIBLE WITH THIS
STORM.

LOCATIONS IMPACTED INCLUDE...
COON RAPIDS...BLAINE...FRIDLEY...SHOREVIEW...WHITE BEAR LAKE...NEW
BRIGHTON...LINO LAKES...COLUMBIA HEIGHTS...HAM LAKE...HUGO...VADNAIS
HEIGHTS AND MOUNDS VIEW.

THIS INCLUDES THE FOLLOWING HIGHWAYS...
 INTERSTATE 35 BETWEEN MILE MARKERS 128 AND 129.
 U.S. HIGHWAY 10 IN MINNESOTA BETWEEN MILE MARKERS 233 AND 240.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM CDT FOR EAST CENTRAL
MINNESOTA.

LAT...LON 4531 9303 4509 9301 4504 9319 4504 9327
      4513 9329
TIME...MOT...LOC 2256Z 228DEG 37KT 4506 9325

CLF
Special weather statement, Aug 22, 6:01 PM CDT, 1 hour 17 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
601 PM CDT SAT AUG 22 2015

MNZ084-222330-
WASECA-
601 PM CDT SAT AUG 22 2015

...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN WASECA COUNTY...

AT 601 PM CDT...A STRONG THUNDERSTORM WAS NEAR WALDORF...OR 23 MILES
SOUTHEAST OF MANKATO...MOVING NORTHEAST AT 50 MPH.

WINDS IN EXCESS OF 30 MPH AND NICKEL SIZE HAIL ARE POSSIBLE WITH THIS
STORM.

LOCATIONS IMPACTED INCLUDE...
WASECA...WALDORF...OTISCO AND WASECA AIRPORT.

THIS INCLUDES U.S. HIGHWAY 14 BETWEEN MILE MARKERS 153 AND 163.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM CDT FOR SOUTH CENTRAL
MINNESOTA.

LAT...LON 4385 9375 4393 9376 4419 9354 4400 9340
      4385 9365
TIME...MOT...LOC 2301Z 227DEG 43KT 4388 9373

CLF
Local storm report, Aug 22, 6:18 PM CDT, 1 hour before
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The office that day

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

IssuedProductOfficeCountiesLasted
Aug 22, 7:22 PM CDTSevere Thunderstorm WarningMPXSaint Croix23 min

Nearby

Special Weather Statements in Wisconsin, 2015Every special weather statement in 2015

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.