Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 55, NWS Duluth, MN

July 22, 2014Ashland County, Iron County, Wisconsin

NWS Duluth, MN issued this severe thunderstorm warning at Jul 22, 2014, 4:26 AM CDT for Ashland County, Iron County, Wisconsin. It was in force for 34 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jul 22, 2014, 4:26 AM CDT (09:26 UTC)
Expired
Jul 22, 2014, 5:00 AM CDT
In force
34 min
Issued by
NWS Duluth, MN
Area
Storm-based polygon
Hail
1.0 in
Wind
50.0 mph

Counties Ashland County, WI, Iron County, WI

The radar

The Duluth radar (KDLH), 139 km from the middle of the area, began a volume at 09:28 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jul 22, 1:20 AM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 9.4 hours before the alert went out and 285 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 2014-07-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 71 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, Green Bay/Straub, WI at 00:00Z on 2014-07-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 26 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
71 J/kg
Mixed-layer CIN
-435 J/kg
Mixed-layer LCL
1542 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
26 m²/s²
0-3 km storm-relative helicity
79 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Duluth, MN wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 22, 3:24 AM CDT, 1 hour 2 minutes earlier.

Area forecast discussion, Jul 22, 3:24 AM CDT, 1 hour 2 minutes before
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Hazardous weather outlook, Jul 21, 8:06 PM CDT, 8 hours 20 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE DULUTH MN
806 PM CDT MON JUL 21 2014

MNZ010>012-018>021-025-026-033>038-WIZ001>004-006>009-230115-
KOOCHICHING-NORTHERN ST. LOUIS-NORTHERN COOK/NORTHERN LAKE-
NORTHERN ITASCA-CENTRAL ST. LOUIS-SOUTHERN LAKE/LAKESHORE-
SOUTHERN COOK/LAKESHORE-NORTHERN CASS-SOUTHERN ITASCA-
SOUTHERN CASS-CROW WING-NORTHERN AITKIN-SOUTHERN AITKIN-
CARLTON/SOUTHERN ST. LOUIS-PINE-DOUGLAS-BAYFIELD-ASHLAND-IRON-
BURNETT-WASHBURN-SAWYER-PRICE-
806 PM CDT MON JUL 21 2014

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST MINNESOTA AND
NORTHWEST WISCONSIN.

.DAY ONE...TONIGHT

STRONG TO SEVERE THUNDERSTORMS WILL SPREAD EAST ACROSS THE
NORTHLAND OVERNIGHT. THE STORMS ARE EXPECTED TO REACH THE
INTERNATIONAL FALLS AND BRAINERD AREAS AROUND 1000 PM...MOVE INTO
THE HIBBING AND TWIN PORTS AREA AROUND MIDNIGHT...THEN TRACK OVER
NORTHERN WISCONSIN THROUGH THE EARLY MORNING HOURS.

ANY STORMS OVERNIGHT WILL HAVE THE POTENTIAL TO PRODUCE DAMAGING
WINDS AND HAIL...ALONG WITH TORRENTIAL RAINFALL.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

THERE IS A CHANCE OF THUNDERSTORMS TUESDAY. THE OPPORTUNITY FOR
MORE STORMS ARRIVES THURSDAY NIGHT AND LASTS THROUGH SUNDAY.

.SPOTTER INFORMATION STATEMENT...

THE ITASCA COUNTY SKYWARN SPOTTER NETWORK HAS BEEN ACTIVATED TO
CALL IN ANY STORM REPORTS OVERNIGHT.

LSZ121-140>148-230115-
BAYFIELD TO OAK POINT WI-GRAND PORTAGE TO GRAND MARAIS MN-
GRAND MARAIS TO TACONITE HARBOR MN-
TACONITE HARBOR TO SILVER BAY HARBOR MN-
SILVER BAY HARBOR TO TWO HARBORS MN-TWO HARBORS TO DULUTH MN-
DULUTH MN TO PORT WING WI-PORT WING TO SAND ISLAND WI-
SAND ISLAND TO BAYFIELD WI-OAK POINT TO SAXON HARBOR WI-
806 PM CDT MON JUL 21 2014

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE NEARSHORE WATERS OF
WESTERN LAKE SUPERIOR.

.DAY ONE...TONIGHT

THUNDERSTORMS WILL TRACK OVER WESTERN LAKE SUPERIOR MAINLY AFTER
MIDNIGHT. THESE STORMS WILL HAVE THE POTENTIAL FOR DAMAGING WINDS
AND HAIL...FREQUENT LIGHTNING...AND TORRENTIAL RAINFALL.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

THUNDERSTORMS WILL LINGER OVER WESTERN LAKE SUPERIOR TUESDAY
MORNING. THE OPPORTUNITY FOR MORE STORMS ARRIVES FOR THE WEEKEND.

GRANING

MORE INFORMATION MAY BE OBTAINED AT THE FOLLOWING WEB ADDRESS:
HTTP://WWW.WEATHER.GOV/DULUTH (ALL LOWER CASE)

In the hours before

Special weather statement, Jul 22, 3:10 AM CDT, 1 hour 16 minutes before
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Special weather statement, Jul 22, 3:15 AM CDT, 1 hour 11 minutes before
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Local storm report, Jul 22, 3:19 AM CDT, 1 hour 7 minutes before
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Special weather statement, Jul 22, 3:50 AM CDT, 36 minutes before
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Local storm report, Jul 22, 3:57 AM CDT, 29 minutes before
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Special weather statement, Jul 22, 4:10 AM CDT, 16 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jul 21, 10:24 PM CDTSevere Thunderstorm WarningDLHCass, Itasca, Koochiching51 min
Jul 21, 10:49 PM CDTSpecial Weather StatementDLHCass41 min
Jul 21, 11:11 PM CDTSevere Thunderstorm WarningDLHCass, Itasca, Koochiching, Saint Louis64 min
Jul 21, 11:16 PM CDTSevere Thunderstorm WarningDLHCass, Crow Wing44 min
Jul 21, 11:57 PM CDTSevere Thunderstorm WarningDLHAitkin, Cass, Crow Wing, Itasca48 min
Jul 22, 12:11 AM CDTSevere Thunderstorm WarningDLHItasca, Koochiching, Saint Louis49 min
Jul 22, 12:36 AM CDTSevere Thunderstorm WarningDLHAitkin, Carlton, Pine, Saint Louis24 min
Jul 22, 12:53 AM CDTSpecial Weather StatementDLH52 min
Jul 22, 12:59 AM CDTSevere Thunderstorm WarningDLHCarlton, Pine, Saint Louis46 min
Jul 22, 1:03 AM CDTSevere Thunderstorm WarningDLHPine42 min
Jul 22, 1:20 AM CDTSpecial Weather StatementDLHLake40 min
Jul 22, 1:24 AM CDTSpecial Marine WarningDLH96 min
Jul 22, 1:40 AM CDTSevere Thunderstorm WarningDLHLake, Saint Louis37 min
Jul 22, 1:42 AM CDTSevere Thunderstorm WarningDLHPine48 min
Jul 22, 1:43 AM CDTSevere Thunderstorm WarningDLHCook, Lake35 min
Jul 22, 1:56 AM CDTSpecial Marine WarningDLH94 min
Jul 22, 1:59 AM CDTSpecial Marine WarningDLH61 min
Jul 22, 2:11 AM CDTSevere Thunderstorm WarningDLHCook, Lake49 min
Jul 22, 2:14 AM CDTSevere Thunderstorm WarningDLHCook, Lake46 min
Jul 22, 2:42 AM CDTSevere Thunderstorm WarningDLHCook33 min
Jul 22, 4:55 AM CDTSpecial Weather StatementDLHCook35 min
Jul 22, 9:52 AM CDTSmall Craft AdvisoryDLH6 hr
Jul 22, 2:07 AM CDTSevere Thunderstorm WarningDLHAshland, Bayfield38 min
Jul 22, 2:23 AM CDTSevere Thunderstorm WarningDLHAshland, Bayfield, Burnett, Iron, Price, Sawyer and 1 more41 min
Jul 22, 2:39 AM CDTSpecial Weather StatementDLHWashburn21 min
Jul 22, 3:10 AM CDTSpecial Weather StatementDLHWashburn35 min
Jul 22, 3:15 AM CDTSpecial Weather StatementDLHAshland30 min
Jul 22, 3:50 AM CDTSpecial Weather StatementDLHAshland40 min
Jul 22, 4:10 AM CDTSpecial Weather StatementDLHIron35 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2014Every severe thunderstorm warning in 2014

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.