Alert archive / Minnesota / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 128, NWS Duluth, MN
NWS Duluth, MN issued this severe thunderstorm warning at Jul 22, 2012, 8:44 PM CDT for Saint Louis County, Minnesota. It was in force for 24 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, 2012, 8:44 PM CDT (01:44 UTC)
- Expired
- Jul 22, 2012, 9:08 PM CDT
- In force
- 24 min
- Issued by
- NWS Duluth, MN
- Area
- Storm-based polygon
- Hail
- 1.5 in
- Wind
- 50.0 mph
County Saint Louis County, MN
The radar
The Duluth radar (KDLH), 86 km from the middle of the area, began a volume at 01:46 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.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 22, 3:25 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
International Fa, MN (KINL), launched 00:00Z, 1.7 hours before the alert went out and 126 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.
- Mixed-layer CAPE
- 1588 J/kg
- Mixed-layer CIN
- -62 J/kg
- Mixed-layer LCL
- 1243 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 19 m²/s²
- 0-3 km storm-relative helicity
- 218 m²/s²
- Significant tornado parameter
- 0.8
- Supercell composite
- 5.6
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, 8:22 PM CDT, 22 minutes earlier.
Area forecast discussion, Jul 22, 8:22 PM CDT, 22 minutes before
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</html>Hazardous weather outlook, Jul 22, 3:23 PM CDT, 5 hours 21 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE DULUTH MN 323 PM CDT SUN JUL 22 2012 MNZ010>012-018>021-025-026-033>038-WIZ001>004-006>009-232030- 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- 323 PM CDT SUN JUL 22 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST MINNESOTA AND NORTHWEST WISCONSIN. .DAY ONE...THIS AFTERNOON AND TONIGHT SCATTERED THUNDERSTORMS ARE EXPECTED ACROSS NORTH CENTRAL AND NORTHEAST MINNESOTA LATE THIS AFTERNOON INTO THIS EVENING. A FEW OF THESE STORMS WILL HAVE THE POTENTIAL TO BECOME SEVERE. THE MAIN SEVERE WEATHER THREAT WILL BE LARGE HAIL AND HIGH WINDS. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY THERE ARE CHANCES FOR THUNDERSTORMS TUESDAY NIGHT THROUGH FRIDAY. .SPOTTER INFORMATION STATEMENT... SKYWARN SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON AND TONIGHT. LSZ121-140>148-232030- 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- 323 PM CDT SUN JUL 22 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE NEARSHORE WATERS OF WESTERN LAKE SUPERIOR. .DAY ONE...THIS AFTERNOON AND TONIGHT SCATTERED THUNDERSTORMS ARE POSSIBLE FOR WESTERN LAKE SUPERIOR THIS EVENING. A FEW OF THESE STORMS WILL HAVE THE POTENTIAL TO BECOME SEVERE. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY THERE ARE CHANCES FOR THUNDERSTORMS TUESDAY NIGHT THROUGH FRIDAY. KK 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, 6:44 PM CDT, 2 hours before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DULUTH MN 644 PM CDT SUN JUL 22 2012 MNZ019-026-037-230015- CARLTON/SOUTH ST. LOUIS-CENTRAL ST. LOUIS-SOUTH ITASCA- 644 PM CDT SUN JUL 22 2012 ...STRONG WINDS AHEAD OF A LINE OF THUNDERSTORMS... AT 641 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED STRONG WINDS AHEAD OF A LINE OF THUNDERSTORMS ALONG A LINE EXTENDING FROM GILBERT TO HIBBING...MOVING SOUTH AT 35 MPH. THIS OUTFLOW BOUNDARY IS CAPABLE OF PRODUCING WIND GUSTS UP TO 50 MPH... LOCATIONS IMPACTED INCLUDE... ZIM... SILICA... MAKINEN... LITTLE SWAN... MURPHY LAKE... MELRUDE... TOIVOLA... PAYNE... KELSEY... ELMER... COTTON... SHAW... MEADOWLANDS... CANYON... WIND DAMAGE WITH THESE STORM WILL OCCUR WELL AHEAD OF ANY RAIN OR LIGHTNING. DO NOT WAIT FOR THE SOUND OF THUNDER BEFORE TAKING COVER. SEEK SHELTER IMMEDIATELY INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS. LAT...LON 4707 9217 4698 9291 4743 9310 4752 9236 KK
Local storm report, Jul 22, 6:48 PM CDT, 1 hour 56 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DULUTH MN
648 PM CDT SUN JUL 22 2012
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0647 PM TSTM WND GST MOUNTAIN IRON 47.53N 92.63W
07/22/2012 E50 MPH ST. LOUIS MN TRAINED SPOTTER
4 INCH TREE BRANCHES DOWN...
&&
SCWSpecial weather statement, Jul 22, 7:04 PM CDT, 1 hour 40 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DULUTH MN
704 PM CDT SUN JUL 22 2012
MNZ018-025-026-230030-
NORTH CASS-NORTH ITASCA-SOUTH ITASCA-
704 PM CDT SUN JUL 22 2012
...STRONG THUNDERSTORMS OVER NORTHERN ITASCA COUNTY...
AT 703 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED AN
AREA OF STRONG THUNDERSTORMS NEAR DIXON LAKE...MOVING EAST AT 35 MPH.
THESE STORMS ARE CAPABLE OF PRODUCING HALF INCH DIAMETER HAIL...WIND
GUSTS UP TO 40 MPH...OCCASIONAL CLOUD TO GROUND LIGHTNING...BRIEF
HEAVY DOWNPOURS...
LOCATIONS IMPACTED INCLUDE...
SQUAW LAKE... CUT FOOT SIOUX LAKE...
WIRT... OSLUND... MAX...
SAND LAKE... INGER... BOWSTRING LAKE...
TALMOON... SPRING LAKE... JESSIE LAKE...
BOWSTRING...
GUSTY WINDS MAY CAUSE SMALL OBJECTS SUCH AS TRASH BINS TO BLOW
AROUND. STAY AWAY FROM HIGH OBJECTS OUTDOORS SUCH AS TREES. SEEK
SHELTER IN A STURDY STRUCTURE UNTIL THIS STORM HAS PASSED.
LAT...LON 4774 9437 4774 9357 4731 9375 4756 9443
4760 9443
KKSpecial weather statement, Jul 22, 7:22 PM CDT, 1 hour 22 minutes before
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</html>Special weather statement, Jul 22, 7:58 PM CDT, 46 minutes before
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</html>Special weather statement, Jul 22, 8:26 PM CDT, 18 minutes before
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</html>The office that day
Everything else NWS Duluth, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 22, 7:04 PM CDT | Special Weather Statement | DLH | Itasca | 26 min |
| Jul 22, 7:10 PM CDT | Severe Thunderstorm Warning | DLH | Itasca | 23 min |
| Jul 22, 7:14 PM CDT | Severe Thunderstorm Warning | DLH | Saint Louis | 31 min |
| Jul 22, 7:22 PM CDT | Special Weather Statement | DLH | Saint Louis | 23 min |
| Jul 22, 7:28 PM CDT | Severe Thunderstorm Warning | DLH | Saint Louis | 35 min |
| Jul 22, 7:40 PM CDT | Severe Thunderstorm Warning | DLH | Lake, Saint Louis | 50 min |
| Jul 22, 7:58 PM CDT | Special Weather Statement | DLH | Saint Louis | 47 min |
| Jul 22, 8:11 PM CDT | Special Marine Warning | DLH | 26 min | |
| Jul 22, 8:26 PM CDT | Special Weather Statement | DLH | Lake | 34 min |
| Jul 22, 9:03 PM CDT | Special Weather Statement | DLH | 27 min | |
| Jul 22, 9:20 PM CDT | Special Weather Statement | DLH | Lake | 40 min |
| Jul 22, 9:23 PM CDT | Special Weather Statement | DLH | Lake | 37 min |
| Jul 22, 10:04 PM CDT | Special Weather Statement | DLH | Lake | 26 min |
| Jul 22, 10:13 PM CDT | Special Weather Statement | DLH | Lake | 32 min |
| Jul 22, 10:41 PM CDT | Special Weather Statement | DLH | Lake | 34 min |
| Jul 22, 10:45 PM CDT | Special Weather Statement | DLH | Cook, Lake | 45 min |
| Jul 22, 11:18 PM CDT | Special Weather Statement | DLH | Lake | 27 min |
| Jul 22, 11:22 PM CDT | Special Weather Statement | DLH | Lake | 23 min |
| Jul 22, 11:26 PM CDT | Special Weather Statement | DLH | Cook | 34 min |
| Jul 23, 12:06 AM CDT | Special Weather Statement | DLH | Cook | 24 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 2012Every severe thunderstorm warning in 2012
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.