Alert archive / Michigan / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 16, NWS Marquette, MI

May 12, 2004Baraga County, Michigan

NWS Marquette, MI issued this severe thunderstorm warning at May 12, 2004, 6:43 PM EDT for Baraga County, Michigan. It was in force for 47 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: May 12, 2004, 6:43 PM EDT (22:43 UTC)
Expired: May 12, 2004, 7:30 PM EDT
In force: 47 min
Issued by: NWS Marquette, MI
Area: Whole counties

County Baraga County, MI

The watch it was issued in

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

Issued	Product	Office	Lasted
May 12, 1:20 PM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 10.7 hours before the alert went out and 248 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: 127 J/kg
Mixed-layer CIN: -116 J/kg
Mixed-layer LCL: 1117 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 107 m²/s²
0-3 km storm-relative helicity: 105 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 Marquette, MI wrote its last area forecast discussion before this severe thunderstorm warning went out at May 12, 5:10 PM EDT, 1 hour 33 minutes earlier.

Area forecast discussion, May 12, 5:10 PM EDT, 1 hour 33 minutes before

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Hazardous weather outlook, May 12, 5:50 PM EDT, 53 minutes before

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In the hours before

Special weather statement, May 12, 1:36 PM EDT, 5 hours 7 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MARQUETTE MI
136 PM EDT WED MAY 12 2004

LSZ221-241-242-MIZ002>004-009-010-084-122300-
LAKE SUPERIOR...SAXON HARBOR TO ONTONAGON MI-
ONTONAGON TO UPPER ENTRANCE OF PORTAGE CANAL MI-
 LOWER ENTRANCE OF PORTAGE CANAL...INCLUDING KEWEENAW
BAY AND HURON BAY...TO THE HURON ISLANDS MI-
 BARAGA-GOGEBIC-IRON-NORTHERN HOUGHTON-ONTONAGON-SOUTHERN HOUGHTON
136 PM EDT WED MAY 12 2004

...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 7 PM EDT (6 PM CDT)
FOR PORTIONS OF WESTERN AND CENTRAL UPPER MICHIGAN...

THE STORM PREDICTION CENTER HAS ISSUED A SEVERE THUNDERSTORM WATCH
FOR THE FOLLOWING COUNTIES IN UPPER MICHIGAN...

BARAGA...GOGEBIC...IRON...HOUGHTON...AND ONTONAGON

INCLUDING THE ADJACENT NEARSHORE WATERS OF LAKE SUPERIOR FROM SAXON
HARBOR TO THE UPPER ENTRANCE OF PORTAGE CANAL...AND FROM THE LOWER
ENTRANCE OF PORTAGE CANAL TO THE HURON ISLANDS.

STRONG TO SEVERE THUNDERSTORMS WILL MOVE THROUGH WESTERN UPPER
MICHIGAN BETWEEN BETWEEN 230 PM EDT AND 7 PM EDT.

HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 60
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA.
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE
TORNADOES.

TRH

Local storm report, May 12, 5:29 PM EDT, 1 hour 14 minutes before

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Local storm report, May 12, 6:38 PM EDT, 5 minutes before

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The office that day

Everything else NWS Marquette, MI issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 12, 5:05 PM EDT	Severe Thunderstorm Warning	MQT	Ontonagon	40 min
May 12, 6:02 PM EDT	Severe Thunderstorm Warning	MQT	Baraga	28 min
May 12, 6:06 PM EDT	Special Marine Warning	MQT		39 min
May 12, 6:06 PM EDT	Special Marine Warning	MQT		39 min
May 12, 6:54 PM EDT	Severe Thunderstorm Warning	MQT	Marquette	66 min
May 12, 7:48 PM EDT	Severe Thunderstorm Warning	MQT	Dickinson	57 min

Nearby

Severe Thunderstorm Warnings in Michigan, 2004 Every severe thunderstorm warning in 2004

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.