Alert archive / Minnesota / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 25, NWS Duluth, MN

July 5, 2014Saint Louis County, Minnesota

NWS Duluth, MN issued this severe thunderstorm warning at Jul 5, 2014, 11:54 AM CDT for Saint Louis County, Minnesota. It was in force for 36 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 5, 2014, 11:54 AM CDT (16:54 UTC)
Expired: Jul 5, 2014, 12:30 PM CDT
In force: 36 min
Issued by: NWS Duluth, MN
Area: Storm-based polygon
Hail: 1.25 in
Wind: 60.0 mph

County Saint Louis County, MN

The radar

The Duluth radar (KDLH), 86 km from the middle of the area, began a volume at 16:57 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, 4.9 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 792 J/kg
Mixed-layer CIN: -214 J/kg
Mixed-layer LCL: 721 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 332 m²/s²
0-3 km storm-relative helicity: 336 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.2

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 5, 9:44 AM CDT, 2 hours 10 minutes earlier.

Area forecast discussion, Jul 5, 9:44 AM CDT, 2 hours 10 minutes before

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Hazardous weather outlook, Jul 5, 4:10 AM CDT, 7 hours 44 minutes before

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In the hours before

Special weather statement, Jul 5, 9:39 AM CDT, 2 hours 15 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DULUTH MN
939 AM CDT SAT JUL 5 2014

MNZ010-011-051515-
KOOCHICHING-NORTH ST. LOUIS-
939 AM CDT SAT JUL 5 2014

...THUNDERSTORM OVER THE BORDERLAND...

AT 936 AM CDT...A LARGE THUNDERSTORM WAS 5 MILES SOUTH OF
LITTLEFORK...MOVING EAST AT 25 MPH.

HEAVY RAIN WILL ACCOMPANY THIS STORM.

* THE THUNDERSTORM WILL BE NEAR...
  RAY BY 1015 AM...

SEEK SHELTER IN A STURDY STRUCTURE UNTIL THIS STORM HAS PASSED.

LAT...LON 4843 9298 4819 9301 4825 9365 4843 9364

CLC

Special weather statement, Jul 5, 10:18 AM CDT, 1 hour 36 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DULUTH MN
1018 AM CDT SAT JUL 5 2014

MNZ010-011-051600-
KOOCHICHING-NORTH ST. LOUIS-
1018 AM CDT SAT JUL 5 2014

...STRONG THUNDERSTORMS OVER THE BORDERLANDS...

AT 1017 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 8 MILES NORTH OF ASH
LAKE TO 10 MILES NORTHWEST OF ASH LAKE TO 13 MILES WEST OF ASH
LAKE...MOVING EAST AT 25 MPH.

THESE STORMS ARE CAPABLE OF PRODUCING PEA SIZE HAIL...WIND GUSTS UP
TO 30 MPH...OCCASIONAL CLOUD TO GROUND LIGHTNING...BRIEF HEAVY
DOWNPOURS...

LOCATIONS IMPACTED INCLUDE...
  ASH LAKE...           LONG LAKE...          CRANE LAKE...
  BLACK DUCK LAKE...

GUSTY WINDS MAY CAUSE SMALL OBJECTS SUCH AS TRASH BINS TO BLOW
AROUND. STAY AWAY FROM HIGH OBJECTS OUTDOORS SUCH AS TREES. SEEK
SHELTER INDOORS UNTIL THESE STORMS HAVE PASSED. GUSTY WINDS WILL
RESULT IN LOCALLY HIGHER WAVES. BOATERS ON AREA LAKES SHOULD SEEK
SAFE HARBOR UNTIL THESE STORMS HAVE PASSED.

LAT...LON 4831 9243 4819 9258 4823 9330 4831 9332
      4837 9309 4837 9246

HUYCK

Special weather statement, Jul 5, 10:59 AM CDT, 55 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DULUTH MN
1059 AM CDT SAT JUL 5 2014

MNZ011-051630-
NORTH ST. LOUIS-
1059 AM CDT SAT JUL 5 2014

...STRONG THUNDERSTORMS OVER NORTHERN ST. LOUIS COUNTY...

AT 1058 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM CRANE LAKE TO ASH
LAKE...MOVING EAST AT 25 MPH.

THESE STORMS ARE CAPABLE OF PRODUCING UP TO PENNY SIZE HAIL...WIND
GUSTS UP TO 40 MPH...FREQUENT CLOUD TO GROUND LIGHTNING...BRIEF HEAVY
DOWNPOURS...

LOCATIONS IMPACTED INCLUDE...
  BLACK DUCK LAKE...    CRANE LAKE...         ECHO LAKE...

GUSTY WINDS MAY CAUSE SMALL OBJECTS SUCH AS TRASH BINS TO BLOW
AROUND AND MAY RESULT IN LOCALLY HIGHER WAVES ON AREA LAKES. STAY
AWAY FROM TALL OBJECTS OUTDOORS SUCH AS TREES. SEEK SHELTER INDOORS
UNTIL THESE STORMS HAVE PASSED. BOATERS SHOULD MOVE TO SAFE HARBOR
UNTIL THE STORMS HAVE PASSED.

LAT...LON 4835 9203 4815 9221 4820 9304 4828 9301
      4835 9259 4835 9245 4824 9237 4825 9230
      4829 9232 4834 9231 4836 9228 4835 9212
      4837 9205

HUYCK

Special weather statement, Jul 5, 11:23 AM CDT, 31 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DULUTH MN
1123 AM CDT SAT JUL 5 2014

MNZ011-051645-
NORTH ST. LOUIS-
1123 AM CDT SAT JUL 5 2014

...STRONG THUNDERSTORM APPROACHING LAKE AGNES...

AT 1121 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 6 MILES NORTHWEST OF LAKE AGNES...MOVING EAST AT
30 MPH.

THIS STORM IS CAPABLE OF PRODUCING PEA SIZE HAIL...WIND GUSTS UP TO
30 MPH...OCCASIONAL CLOUD TO GROUND LIGHTNING...BRIEF HEAVY
DOWNPOURS...

* THE THUNDERSTORM WILL BE NEAR...
  LAKE AGNES BY 1130 AM...

GUSTY WINDS MAY CAUSE SMALL OBJECTS SUCH AS TRASH BINS TO BLOW
AROUND AND WILL RESULT IN LOCALLY HIGHER WAVES ON AREA LAKES. STAY
AWAY FROM TALL OBJECTS OUTDOORS SUCH AS TREES. SEEK SHELTER INDOORS
UNTIL THIS STORM HAS PASSED. BOATERS ARE ENCOURAGED TO SEEK SAFE
HARBOR UNTIL THE STORM HAS PASSED.

LAT...LON 4833 9199 4827 9199 4825 9193 4825 9189
      4822 9186 4822 9182 4818 9182 4822 9229
      4833 9229 4834 9201

HUYCK

Special weather statement, Jul 5, 11:26 AM CDT, 28 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DULUTH MN
1126 AM CDT SAT JUL 5 2014

MNZ011-051715-
NORTH ST. LOUIS-
1126 AM CDT SAT JUL 5 2014

...STRONG THUNDERSTORM OVER NORTHERN ST. LOUIS COUNTY...

AT 1125 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 4 MILES NORTHEAST OF BLACK DUCK LAKE...MOVING
EAST AT 25 MPH.

THIS STORM IS CAPABLE OF PRODUCING HALF INCH DIAMETER HAIL...WIND
GUSTS UP TO 40 MPH...OCCASIONAL CLOUD TO GROUND LIGHTNING...BRIEF
HEAVY DOWNPOURS...

* THE THUNDERSTORM WILL BE NEAR...
  BUYCK BY 1145 AM...
  ECHO LAKE BY 1150 AM...
  CRANE LAKE BY 1150 AM...

GUSTY WINDS MAY CAUSE SMALL OBJECTS SUCH AS TRASH BINS TO BLOW
AROUND AND WILL RESULT IN LOCALLY HIGHER WAVES ON AREA LAKES. STAY
AWAY FROM TALL OBJECTS OUTDOORS SUCH AS TREES. SEEK SHELTER INDOORS
UNTIL THIS STORM HAS PASSED. BOATERS ARE ENCOURAGED TO SEEK SAFE
HARBOR UNTIL THE STORM HAS PASSED.

LAT...LON 4831 9219 4811 9223 4816 9284 4828 9283
      4830 9241 4824 9237 4825 9230 4828 9232
      4830 9231

HUYCK

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 4, 7:17 PM CDT	Special Weather Statement	DLH	Lake	58 min
Jul 5, 2:28 AM CDT	Special Weather Statement	DLH		32 min
Jul 5, 2:53 AM CDT	Severe Thunderstorm Warning	DLH	Saint Louis	37 min
Jul 5, 2:58 AM CDT	Special Weather Statement	DLH	Koochiching	17 min
Jul 5, 3:11 AM CDT	Severe Thunderstorm Warning	DLH	Koochiching	11 min
Jul 5, 3:32 AM CDT	Special Weather Statement	DLH		28 min
Jul 5, 9:39 AM CDT	Special Weather Statement	DLH	Koochiching	36 min
Jul 5, 10:18 AM CDT	Special Weather Statement	DLH		42 min
Jul 5, 10:59 AM CDT	Special Weather Statement	DLH		31 min
Jul 5, 11:23 AM CDT	Special Weather Statement	DLH		22 min
Jul 5, 11:26 AM CDT	Special Weather Statement	DLH		49 min
Jul 5, 12:28 PM CDT	Severe Thunderstorm Warning	DLH	Saint Louis	47 min
Jul 5, 12:55 PM CDT	Severe Thunderstorm Warning	DLH	Saint Louis	20 min
Jul 5, 1:12 PM CDT	Severe Thunderstorm Warning	DLH	Lake, Saint Louis	48 min
Jul 5, 2:33 PM CDT	Special Weather Statement	DLH		12 min
Jul 5, 2:46 PM CDT	Flash Flood Warning	DLH	Lake, Saint Louis	6 hr
Jul 5, 3:24 PM CDT	Special Weather Statement	DLH		36 min
Jul 5, 3:57 PM CDT	Special Weather Statement	DLH	Lake	48 min
Jul 5, 4:10 PM CDT	Areal Flood Advisory	DLH	Cook, Lake	6 hr
Jul 5, 4:38 PM CDT	Special Weather Statement	DLH	Lake	37 min
Jul 5, 5:12 PM CDT	Special Weather Statement	DLH	Lake	48 min
Jul 5, 5:18 PM CDT	Special Weather Statement	DLH	Cook	57 min
Jul 5, 5:53 PM CDT	Flash Flood Warning	DLH	Cook, Lake	6 hr
Jul 5, 6:08 PM CDT	Special Weather Statement	DLH	Cook	22 min
Jul 5, 6:19 PM CDT	Special Weather Statement	DLH		26 min
Jul 5, 6:25 PM CDT	Special Marine Warning	DLH		65 min
Jul 5, 6:25 PM CDT	Severe Thunderstorm Warning	DLH	Cook	20 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2014 Every 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.