Alert archive / Wisconsin / Special Weather Statements in 2019

Special Weather Statement, NWS Twin Cities, MN

July 27, 2019Eau Claire County, Pepin County, Wisconsin

NWS Twin Cities, MN issued this special weather statement at Jul 27, 2019, 1:03 AM CDT for Eau Claire County, Pepin County, Wisconsin. It was in force for 42 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 27, 2019, 1:03 AM CDT (06:03 UTC)
Expired
Jul 27, 2019, 1:45 AM CDT
In force
42 min
Issued by
NWS Twin Cities, MN

Counties Eau Claire County, WI, Pepin County, WI

The radar

The La Crosse radar (KARX), 101 km from the middle of the area, began a volume at 06:05 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, 6.1 hours before the alert went out and 147 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 00:00Z on 2019-07-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1361 joules per kilogram.LCLLFCEL10008507005003002001001 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 00:00Z on 2019-07-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 127 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
1361 J/kg
Mixed-layer CIN
-70 J/kg
Mixed-layer LCL
1457 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
127 m²/s²
0-3 km storm-relative helicity
202 m²/s²
Significant tornado parameter
0.4
Supercell composite
11.0

Open this sounding in Storm Lab

The text

As transmitted.

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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 27, 1:00 AM CDT, 3 minutes earlier.

Area forecast discussion, Jul 27, 1:00 AM CDT, 3 minutes before
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Hazardous weather outlook, Jul 26, 12:19 PM CDT, 12 hours 44 minutes before
Hazardous Weather Outlook
National Weather Service Twin Cities/Chanhassen MN
1219 PM CDT Fri Jul 26 2019

MNZ043>045-049>053-056>070-073>078-082>085-091>093-WIZ014>016-
023>028-271730-
Morrison-Mille Lacs-Kanabec-Stearns-Benton-Sherburne-Isanti-
Chisago-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-
1219 PM CDT Fri Jul 26 2019

This Hazardous Weather Outlook is for portions of central and
southern Minnesota...and west central Wisconsin.

.DAY ONE...This Afternoon and Tonight

Isolated thunderstorms will develop late this afternoon, and into
the evening for mainly far east central Minnesota, and into west
central Wisconsin. Any storm that develops will be capable of
producing large hail and damaging winds. These storms should
quickly weaken late this evening, with generally strong storms
overnight for areas of south central Minnesota as they drift
southward toward the Iowa border.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

There is a chance of thunderstorms Saturday night into Sunday
night. A few storms may be severe Sunday across southern
Minnesota.

.SPOTTER INFORMATION STATEMENT...

Due to the isolated nature of the severe storms, SKYWARN spotter
activation is not expected.

MNZ041-042-047-048-054-055-271730-
Douglas-Todd-Stevens-Pope-Lac Qui Parle-Swift-
1219 PM CDT Fri Jul 26 2019

This Hazardous Weather Outlook is for portions of central
Minnesota and west central Minnesota.

.DAY ONE...This Afternoon and Tonight

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

There is a chance of thunderstorms Saturday night into Sunday
night. A few storms may be severe Sunday across southern
Minnesota.

.SPOTTER INFORMATION STATEMENT...

SKYWARN spotter activation will not be needed.

In the hours before

Special weather statement, Jul 26, 10:52 PM CDT, 2 hours 11 minutes before
Special Weather Statement
National Weather Service Twin Cities/Chanhassen MN
1052 PM CDT Fri Jul 26 2019

WIZ023-270415-
St. Croix-
1052 PM CDT Fri Jul 26 2019

...A STRONG THUNDERSTORM WILL AFFECT CENTRAL ST. CROIX COUNTY...

At 1051 PM CDT, a strong thunderstorm was located near Somerset, or
13 miles north of River Falls, moving east at 35 mph.

Winds in excess of 30 mph and nickel size hail are possible with this
storm.

Locations impacted include...
Hammond, Baldwin, Roberts, Boardman, Houlton, Willow River State Park
and Burkhardt.

This includes Interstate 94 in Wisconsin between mile markers 15 and
20.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

LAT...LON 4502 9276 4511 9267 4505 9235 4491 9236
TIME...MOT...LOC 0351Z 282DEG 29KT 4506 9265

ETA
Special weather statement, Jul 26, 11:12 PM CDT, 1 hour 51 minutes before
Special Weather Statement
National Weather Service Twin Cities/Chanhassen MN
1112 PM CDT Fri Jul 26 2019

MNZ067-069-075-076-270445-
Le Sueur-Sibley-Scott-Nicollet-
1112 PM CDT Fri Jul 26 2019

...A STRONG THUNDERSTORM WILL AFFECT NORTHWESTERN LE SUEUR...
SOUTHEASTERN SIBLEY...SOUTHWESTERN SCOTT AND NORTHEASTERN NICOLLET
COUNTIES...

At 1112 PM CDT, a strong thunderstorm was located near Arlington, or
25 miles north of Mankato, moving southeast at 35 mph.

Nickel size hail is possible with this storm.

Locations impacted include...
Le Sueur, Henderson, Ottawa, St Thomas, Rush River, New Rome and
Norseland.

This includes U.S. Highway 169 between mile markers 72 and 84.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

LAT...LON 4452 9424 4464 9395 4453 9367 4434 9386
TIME...MOT...LOC 0412Z 295DEG 29KT 4453 9405

ETA
Special weather statement, Jul 26, 11:15 PM CDT, 1 hour 48 minutes before
Special Weather Statement
National Weather Service Twin Cities/Chanhassen MN
1115 PM CDT Fri Jul 26 2019

WIZ023-270445-
St. Croix-
1115 PM CDT Fri Jul 26 2019

...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN ST. CROIX COUNTY...

At 1115 PM CDT, a strong thunderstorm was located over Hammond, or 9
miles northeast of River Falls, moving southeast at 30 mph.

Winds in excess of 30 mph and nickel size hail are possible with this
storm.

Locations impacted include...
Hammond, Baldwin and Roberts.

This includes Interstate 94 in Wisconsin between mile markers 8 and
24.

Torrential rainfall is also occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

LAT...LON 4485 9229 4487 9251 4494 9263 4508 9253
      4486 9215 4485 9216
TIME...MOT...LOC 0415Z 299DEG 25KT 4497 9249

ETA
Special weather statement, Jul 27, 12:47 AM CDT, 16 minutes before
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Special weather statement, Jul 27, 12:56 AM CDT, 7 minutes before
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Special weather statement, Jul 27, 1:03 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.

IssuedProductOfficeCountiesLasted
Jul 26, 7:11 PM CDTSevere Thunderstorm WarningMPXAnoka, Sherburne, Wright49 min
Jul 26, 7:34 PM CDTSpecial Weather StatementMPXRamsey, Washington41 min
Jul 26, 7:47 PM CDTSevere Thunderstorm WarningMPXAnoka28 min
Jul 26, 8:05 PM CDTSevere Thunderstorm WarningMPXAnoka, Ramsey, Washington25 min
Jul 26, 8:32 PM CDTSpecial Weather StatementMPXAnoka, Washington58 min
Jul 26, 8:56 PM CDTSevere Thunderstorm WarningMPXAnoka, Ramsey, Washington34 min
Jul 26, 9:13 PM CDTSevere Thunderstorm WarningMPXWashington32 min
Jul 26, 11:12 PM CDTSpecial Weather StatementMPXLe Sueur33 min
Jul 27, 12:15 AM CDTSevere Thunderstorm WarningMPXLe Sueur, Rice, Steele, Waseca27 min
Jul 27, 12:47 AM CDTSpecial Weather StatementMPXGoodhue28 min
Jul 27, 12:56 AM CDTSpecial Weather StatementMPXSteele, Waseca64 min
Jul 26, 8:48 PM CDTSpecial Weather StatementMPXSaint Croix57 min
Jul 26, 10:52 PM CDTSpecial Weather StatementMPXSaint Croix23 min
Jul 26, 11:15 PM CDTSpecial Weather StatementMPXSaint Croix30 min
Jul 26, 11:46 PM CDTSevere Thunderstorm WarningMPXDunn, Pierce, Saint Croix29 min
Jul 27, 12:10 AM CDTSevere Thunderstorm WarningMPXDunn, Eau Claire, Pepin50 min

Nearby

Special Weather Statements in Wisconsin, 2019Every special weather statement in 2019

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.