Alert archive / Minnesota / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 59, NWS Duluth, MN

July 25, 2013Koochiching County, Minnesota

NWS Duluth, MN issued this severe thunderstorm warning at Jul 25, 2013, 1:25 PM CDT for Koochiching County, Minnesota. It was in force for 35 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 25, 2013, 1:25 PM CDT (18:25 UTC)
Expired
Jul 25, 2013, 2:00 PM CDT
In force
35 min
Issued by
NWS Duluth, MN
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

County Koochiching County, MN

The radar

The Duluth radar (KDLH), 196 km from the middle of the area, began a volume at 18:26 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

International Fa, MN (KINL), launched 12:00Z, 6.4 hours before the alert went out and 51 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, International Fa, MN at 12:00Z on 2013-07-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 86 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, International Fa, MN at 12:00Z on 2013-07-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 4 square meters per square second.1939587897Sfc1 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
86 J/kg
Mixed-layer CIN
-25 J/kg
Mixed-layer LCL
569 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
4 m²/s²
0-3 km storm-relative helicity
44 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

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 25, 12:35 PM CDT, 50 minutes earlier.

Area forecast discussion, Jul 25, 12:35 PM CDT, 50 minutes before
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Hazardous weather outlook, Jul 25, 1:19 PM CDT, 6 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE DULUTH MN
119 PM CDT THU JUL 25 2013

MNZ010>012-018>021-025-026-033>038-WIZ001>004-006>009-261030-
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-
119 PM CDT THU JUL 25 2013

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

.DAY ONE...THIS AFTERNOON AND TONIGHT

THUNDERSTORMS WERE DEVELOPING AND INCREASING IN COVERAGE THIS
AFTERNOON OVER NORTHERN MINNESOTA...AND THEY SHOULD CONTINUE TO
THE EAST AND SOUTH THROUGH THE REMAINDER OF THE AFTERNOON. A FEW SEVERE
STORMS...WITH LARGE HAIL AND DAMAGING WINDS THE MAIN
THREATS...WILL BE POSSIBLE THIS AFTERNOON INTO THE EVENING.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

THERE IS A POSSIBILITY OF THUNDERSTORMS NEXT MONDAY AND TUESDAY.

.SPOTTER INFORMATION STATEMENT...

SKYWARN SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON INTO EARLY
EVENING.

LSZ121-140>148-261030-
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-
119 PM CDT THU JUL 25 2013

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

.DAY ONE...THIS AFTERNOON AND TONIGHT

THUNDERSTORMS WILL BE POSSIBLE THIS AFTERNOON AND EVENING. A FEW
STRONG TO SEVERE STORMS WILL BE POSSIBLE...WITH LARGE HAIL AND
DAMAGING WINDS THE MAIN THREATS. THE STORMS SHOULD INCREASE OVER
LAKE SUPERIOR BETWEEN 3 PM AND 5 PM.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

THUNDERSTORMS ARE POSSIBLE AGAIN NEXT MONDAY AND TUESDAY.

MELDE

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 25, 12:49 PM CDT, 36 minutes before
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Special weather statement, Jul 25, 1:18 PM CDT, 7 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jul 24, 7:54 PM CDTSpecial Weather StatementDLHCass36 min
Jul 24, 8:41 PM CDTSpecial Weather StatementDLHCrow Wing34 min
Jul 24, 9:44 PM CDTSpecial Weather StatementDLHCrow Wing31 min
Jul 25, 12:49 PM CDTSpecial Weather StatementDLHKoochiching21 min
Jul 25, 1:18 PM CDTSpecial Weather StatementDLHKoochiching12 min
Jul 25, 1:39 PM CDTSpecial Weather StatementDLHKoochiching21 min
Jul 25, 1:52 PM CDTSevere Thunderstorm WarningDLHKoochiching, Saint Louis38 min
Jul 25, 2:04 PM CDTSpecial Weather StatementDLHItasca26 min
Jul 25, 2:24 PM CDTSevere Thunderstorm WarningDLHSaint Louis36 min
Jul 25, 2:43 PM CDTSpecial Weather StatementDLHItasca17 min
Jul 25, 2:51 PM CDTSpecial Weather StatementDLHAitkin9 min
Jul 25, 2:56 PM CDTSpecial Weather StatementDLHAitkin19 min
Jul 25, 3:01 PM CDTSpecial Weather StatementDLHItasca14 min
Jul 25, 3:12 PM CDTSpecial Weather StatementDLHItasca18 min
Jul 25, 3:22 PM CDTSevere Thunderstorm WarningDLHSaint Louis38 min
Jul 25, 3:29 PM CDTSpecial Weather StatementDLHItasca16 min
Jul 25, 3:44 PM CDTSpecial Weather StatementDLH16 min
Jul 25, 3:46 PM CDTSpecial Weather StatementDLHItasca14 min
Jul 25, 3:57 PM CDTSevere Thunderstorm WarningDLHLake33 min
Jul 25, 3:58 PM CDTSpecial Weather StatementDLHItasca17 min
Jul 25, 3:59 PM CDTSpecial Weather StatementDLHCarlton16 min
Jul 25, 4:02 PM CDTSevere Thunderstorm WarningDLHLake, Saint Louis28 min
Jul 25, 4:05 PM CDTSpecial Weather StatementDLHCass10 min
Jul 25, 4:14 PM CDTSpecial Weather StatementDLHCarlton16 min
Jul 25, 4:20 PM CDTSpecial Weather StatementDLHCass25 min
Jul 25, 4:24 PM CDTSevere Thunderstorm WarningDLHCarlton, Saint Louis51 min
Jul 25, 4:27 PM CDTSevere Thunderstorm WarningDLHCass33 min
Jul 25, 4:34 PM CDTSpecial Marine WarningDLH56 min
Jul 25, 4:35 PM CDTSpecial Weather StatementDLHLake25 min
Jul 25, 4:53 PM CDTSpecial Weather StatementDLHCrow Wing22 min
Jul 25, 4:55 PM CDTSpecial Weather StatementDLHKoochiching20 min
Jul 25, 5:00 PM CDTSpecial Weather StatementDLHAitkin15 min
Jul 25, 5:03 PM CDTSpecial Weather StatementDLHKoochiching27 min
Jul 25, 5:05 PM CDTSevere Thunderstorm WarningDLHAitkin, Crow Wing40 min
Jul 25, 5:07 PM CDTSpecial Weather StatementDLHLake23 min
Jul 25, 5:11 PM CDTSpecial Weather StatementDLH34 min
Jul 25, 5:18 PM CDTSevere Thunderstorm WarningDLHAitkin, Crow Wing42 min
Jul 25, 5:19 PM CDTSpecial Weather StatementDLHCarlton26 min
Jul 25, 5:21 PM CDTSpecial Weather StatementDLHKoochiching24 min
Jul 25, 5:23 PM CDTSpecial Weather StatementDLHKoochiching22 min
Jul 25, 5:26 PM CDTSevere Thunderstorm WarningDLHCarlton, Saint Louis49 min
Jul 25, 5:28 PM CDTSpecial Weather StatementDLHCass17 min
Jul 25, 5:30 PM CDTSpecial Weather StatementDLHKoochiching15 min
Jul 25, 5:42 PM CDTSpecial Weather StatementDLHCass18 min
Jul 25, 5:43 PM CDTSpecial Weather StatementDLHKoochiching17 min
Jul 25, 5:44 PM CDTSpecial Weather StatementDLHKoochiching16 min
Jul 25, 5:49 PM CDTSpecial Weather StatementDLHKoochiching26 min
Jul 25, 5:57 PM CDTSpecial Weather StatementDLHItasca18 min
Jul 25, 5:59 PM CDTSpecial Weather StatementDLHKoochiching16 min
Jul 25, 5:59 PM CDTSevere Thunderstorm WarningDLHAitkin, Carlton, Pine31 min
Jul 25, 6:11 PM CDTSpecial Weather StatementDLHSaint Louis19 min
Jul 25, 6:13 PM CDTSpecial Weather StatementDLHKoochiching17 min
Jul 25, 6:14 PM CDTSpecial Weather StatementDLHKoochiching16 min
Jul 25, 6:29 PM CDTSpecial Weather StatementDLHSaint Louis16 min
Jul 25, 6:55 PM CDTSpecial Weather StatementDLHKoochiching20 min
Jul 25, 6:30 PM CDTSpecial Weather StatementDLHIron15 min
Jul 25, 6:45 PM CDTSpecial Weather StatementDLHIron15 min
Jul 25, 6:49 PM CDTSevere Thunderstorm WarningDLHIron26 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2013Every severe thunderstorm warning in 2013

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.