Alert archive / Wisconsin / Special Weather Statements in 2020

Special Weather Statement, NWS Twin Cities, MN

May 25, 2020Rusk County, Wisconsin

NWS Twin Cities, MN issued this special weather statement at May 25, 2020, 11:01 AM CDT for Rusk County, Wisconsin. It was in force for 29 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
May 25, 2020, 11:01 AM CDT (16:01 UTC)
Expired
May 25, 2020, 11:30 AM CDT
In force
29 min
Issued by
NWS Twin Cities, MN

County Rusk County, WI

The radar

The La Crosse radar (KARX), 164 km from the middle of the area, began a volume at 15:47 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, 4.0 hours before the alert went out and 212 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 12:00Z on 2020-05-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 41 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 12:00Z on 2020-05-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -27 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
41 J/kg
Mixed-layer CIN
-160 J/kg
Mixed-layer LCL
1275 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
-27 m²/s²
0-3 km storm-relative helicity
66 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.0

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 May 25, 7:13 AM CDT, 3 hours 48 minutes earlier.

Area forecast discussion, May 25, 7:13 AM CDT, 3 hours 48 minutes before
Area Forecast Discussion
National Weather Service Twin Cities/Chanhassen MN
713 AM CDT Mon May 25 2020

.Updated for 12Z Aviation Discussion...
Issued at 701 AM CDT Mon May 25 2020

&&

.SHORT TERM...(Today through Tuesday)
Issued at 430 AM CDT Mon May 25 2020

By this morning, a remnant MCV will lift northeast into the area
with the potential for another Monday night. Showers will
accompany the MCV, moving across eastern Minnesota and west-
central Wisconsin leaving behind another day of overcast skies.
Temperatures will rebound into the upper 70s/low 80s despite the
cloud cover. CAMs try to develop another round of showers and
thunderstorms from a potential MCV Monday evening. Forecast
soundings show MLCAPE values between 500 to 1000J/kg with poor
lapse rates and weak vertical wind shear, limiting the severe
threat. However, if storms develop there will still be the
potential for gusty winds and small hail. Monday evening
convection will be dependent on the convective trends across the
southern Plains.

The final system from the southern Plains trough will lift north
across the region Tuesday. After this time, the trough will cut off
over Texas and end the train MCVs. For Tuesday, expect high
temperatures in the upper 70s with mostly cloudy conditions. Tuesday
afternoon/evening presents another chance of showers and
thunderstorms. Potential thunderstorm development will be favored
across eastern Minnesota and western Wisconsin ahead of the surface
front where atmospheric instability will be the greatest.

.LONG TERM...(Tuesday night through Sunday)
Issued at 430 AM CDT Mon May 25 2020

Zonal flow north of the cutoff system midweek will give way to
troughing across the north central and northeastern U.S. late week
and next weekend. A brief shot of cooler and drier air will
accompany the trough and surface high pressure on Friday. The
airmass behind the trough will be relatively dry, keeping the
rain chances out of the area for the rest of the forecast period.

High temperatures will remain in the low/mid 70s into next
weekend. Expect the cool down to be brief as both EPS/GEFS
ensembles continue to build the ridge back northeast from the
Rockies late weekend and the following week as the trough lifts
away. Looking ahead into the first week of June, the CPC outlooks
favor above normal temperature probabilities.

&&

.AVIATION...(For the 12Z TAFS through 12Z Tuesday morning)
Issued at 701 AM CDT Mon May 25 2020

Generally VFR conditions today and tonight, but we'll see a few
scattered showers and thunderstorms over the next 24 hours, along
with early morning patchy fog today and again on Tuesday. Winds
will be light and variable. Although there is a chance for
thunder, confidence was too low to include mention in the TAF.

KMSP...
Generally VFR conditions today and tonight, but we'll see a few
scattered showers and thunderstorms over the next 24 hours, along
with early morning patchy fog today and again on Tuesday. Winds
will be light and variable. Although there is a chance for
thunder, confidence was too low to include mention in the TAF.

/OUTLOOK FOR KMSP/
Tue...VFR/MVFR with -TSRA possible. Wind NW at 5-10 kts.
Wed...VFR. Wind W/NW at 5-10 kts.
Thu...VFR. Wind NW at 10-15 kts.

&&

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

SHORT TERM...BPH
LONG TERM...BPH
AVIATION...JRB
Hazardous weather outlook, May 25, 4:44 AM CDT, 6 hours 17 minutes before
Hazardous Weather Outlook
National Weather Service Twin Cities/Chanhassen MN
444 AM CDT Mon May 25 2020

MNZ041>045-047>070-073>078-082>085-091>093-WIZ014>016-023>028-
260945-
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-
444 AM CDT Mon May 25 2020

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

.DAY ONE...Today and Tonight.

Patchy fog possible this morning, then a chance for thunderstorms
later today and tonight. The threat for severe weather is low, but
a few storms could produce gusty winds and brief downpours.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

There is a chance for thunderstorms through Tuesday night. The
threat for severe weather is low, but a few storms could produce
gusty winds and brief downpours.

.SPOTTER INFORMATION STATEMENT...

SKYWARN spotter activation will not be needed.

jrb

In the hours before

Special weather statement, May 25, 9:52 AM CDT, 1 hour 9 minutes before
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Local storm report, May 25, 10:10 AM CDT, 51 minutes before
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Special weather statement, May 25, 10:30 AM CDT, 31 minutes before
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Local storm report, May 25, 10:52 AM CDT, 9 minutes before
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Local storm report, May 25, 11:01 AM CDT, 0 minutes before
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Special weather statement, May 25, 11:01 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
May 24, 8:45 PM CDTSpecial Weather StatementMPXFreeborn45 min
May 25, 6:09 PM CDTSpecial Weather StatementMPXMille Lacs36 min
May 25, 6:11 PM CDTSpecial Weather StatementMPXBlue Earth34 min
May 25, 6:14 PM CDTSpecial Weather StatementMPXTodd31 min
May 25, 6:51 PM CDTSpecial Weather StatementMPXTodd39 min
May 25, 6:55 PM CDTSpecial Weather StatementMPXBenton35 min
May 25, 8:25 AM CDTSevere Thunderstorm WarningMPXPepin, Pierce35 min
May 25, 8:56 AM CDTSevere Thunderstorm WarningMPXDunn, Pepin34 min
May 25, 9:26 AM CDTSpecial Weather StatementMPXPepin34 min
May 25, 9:52 AM CDTSpecial Weather StatementMPXEau Claire23 min
May 25, 10:01 AM CDTSevere Thunderstorm WarningMPXChippewa, Eau Claire29 min
May 25, 10:30 AM CDTSpecial Weather StatementMPXChippewa30 min
May 25, 11:32 AM CDTSpecial Weather StatementMPXRusk28 min

Nearby

Special Weather Statements in Wisconsin, 2020Every special weather statement in 2020

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.