Alert archive / Michigan / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 43, NWS Marquette, MI

June 18, 2007Alger County, Schoolcraft County, Michigan

NWS Marquette, MI issued this severe thunderstorm warning at Jun 18, 2007, 8:26 PM EDT for Alger County, Schoolcraft County, Michigan. 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: Jun 18, 2007, 8:26 PM EDT (00:26 UTC)
Expired: Jun 18, 2007, 9:00 PM EDT
In force: 34 min
Issued by: NWS Marquette, MI
Area: Counties, with a storm outline in the text

Counties Alger County, MI, Schoolcraft County, MI

The radar

The Marquette radar (KMQT), 96 km from the middle of the area, began a volume at 00:28 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 nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 0.4 hours before the alert went out and 239 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: 1269 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 1135 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: 71 m²/s²
0-3 km storm-relative helicity: 76 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 Jun 18, 7:45 PM EDT, 41 minutes earlier.

Area forecast discussion, Jun 18, 7:45 PM EDT, 41 minutes before

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Hazardous weather outlook, Jun 18, 4:32 PM EDT, 3 hours 54 minutes before

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In the hours before

Special weather statement, Jun 18, 3:39 PM EDT, 4 hours 47 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MARQUETTE MI
339 PM EDT MON JUN 18 2007

MIZ001-182030-
KEWEENAW-
339 PM EDT MON JUN 18 2007

...SIGNIFICANT WEATHER ALERT FOR ISLE ROYALE UNTIL 430 PM
EDT...

AT 336 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
SEVERE THUNDERSTORMS ALONG A LINE EXTENDING FROM 21 MILES NORTHWEST
OF WINDIGO TO 35 MILES NORTHWEST OF REDRIDGE...OR ALONG A LINE
EXTENDING FROM 41 MILES NORTHEAST OF GRAND MARAIS TO 38 MILES NORTH
OF ONTONAGON...MOVING EAST AT 55 MPH.

WINDS UP TO 50 MPH AND FREQUENT CLOUD TO GROUND LIGHTNING ARE
EXPECTED WITH THESE STORMS.

* LOCATIONS IN OR NEAR THE PATH INCLUDE...
  WINDIGO.
  ROCK HARBOR.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR THE AREA.

STAY TUNED TO NOAA WEATHER RADIO...COMMERCIAL RADIO...OR YOUR LOCAL
TELEVISION STATIONS FOR LATER STATEMENTS AND POSSIBLE WARNINGS
CONCERNING THIS WEATHER SITUATION.

MICHELS

Special weather statement, Jun 18, 5:17 PM EDT, 3 hours 9 minutes before

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Special weather statement, Jun 18, 7:06 PM EDT, 1 hour 20 minutes before

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Local storm report, Jun 18, 7:22 PM EDT, 1 hour 4 minutes before

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Special weather statement, Jun 18, 7:32 PM EDT, 54 minutes before

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Special weather statement, Jun 18, 8:01 PM EDT, 25 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
Jun 18, 8:36 PM EDT	Special Marine Warning	MQT		69 min
Jun 18, 8:45 PM EDT	Special Marine Warning	MQT		75 min
Jun 19, 4:26 AM EDT	Wind Advisory	MQT	Houghton, Keweenaw	13 hr

Nearby

Severe Thunderstorm Warnings in Michigan, 2007 Every severe thunderstorm warning in 2007

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.