Alert archive / Michigan / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 17, NWS Gaylord, MI

April 18, 2002Grand Traverse County, Leelanau County, Wexford County, Michigan

NWS Gaylord, MI issued this severe thunderstorm warning at Apr 18, 2002, 8:08 PM EDT for Grand Traverse County, Leelanau County, Wexford County, Michigan. It was in force for 37 min. 5 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Apr 18, 2002, 8:08 PM EDT (00:08 UTC)
Expired: Apr 18, 2002, 8:45 PM EDT
In force: 37 min
Issued by: NWS Gaylord, MI
Area: Counties, with a storm outline in the text

Counties Grand Traverse County, MI, Leelanau County, MI, Wexford County, MI

What was reported inside it

Time	Report	Where	Remark
Apr 18, 8:20 PM EDT	Thunderstorm Wind 50 E	Suttons Bay, MI
Apr 18, 8:21 PM EDT	Thunderstorm Wind 50 E	Sherman, MI	Several trees down.
Apr 18, 8:25 PM EDT	Thunderstorm Wind 50 E	Traverse City, MI	Several large tree limbs down.
Apr 18, 8:50 PM EDT	Thunderstorm Wind 50 E	Cadillac, MI	Power pole snapped in half.
Apr 18, 8:50 PM EDT	Thunderstorm Wind 50 E	Sherman, MI	Numerous trees down.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The watch it was issued in

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

Issued	Product	Office	Lasted
Apr 18, 7:45 PM EDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 0.1 hours before the alert went out and 195 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: 188 J/kg
Mixed-layer CIN: -106 J/kg
Mixed-layer LCL: 2321 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 216 m²/s²
0-3 km storm-relative helicity: 288 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS53 KAPX 190008
SVRAPN
MIC055-089-165-190045-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GAYLORD MI
808 PM EDT THU APR 18 2002

THE NATIONAL WEATHER SERVICE IN GAYLORD HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  GRAND TRAVERSE COUNTY IN NORTHWEST LOWER MICHIGAN
  LEELANAU COUNTY IN NORTHWEST LOWER MICHIGAN
  WEXFORD COUNTY IN NORTHWEST LOWER MICHIGAN

* UNTIL 845 PM EDT

* AT 804 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
  LINE OF SEVERE THUNDERSTORMS FROM 14 MILES NORTH OF EMPIRE TO 11   
  MILES EAST OF MANISTEE...MOVING EAST AT 50 MPH.

* THE SEVERE THUNDERSTORMS WILL REACH...
  TRAVERSE CITY AROUND 815 PM EDT   
  SUTTONS BAY...BUCKLEY AROUND 820 PM EDT
  SHERMAN...MAPLETON AROUND 825 PM EDT

AT 755 PM EDT A 61 MPH WIND GUST WAS REPORTED AT THE OBSERVATION 
STATION IN MANISTEE.

REMAIN INDOORS AND AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED. THIS
STORM IS CAPABLE OF PRODUCING WIND GUSTS BETWEEN 60 AND 80 MPH ALONG
WITH DIME SIZED HAIL. WINDS THIS HIGH CAN DOWN TREES AND POWER LINES.

LAT...LON 4420 8550 4421 8581 4477 8581 4478 8599
          4491 8603 4498 8591 4494 8582 4516 8563
          4478 8564 4495 8548 4476 8554 4486 8543
          4482 8534 4418 8534

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 18, 8:36 PM EDT	Severe Thunderstorm Warning	APX	Antrim, Kalkaska	39 min
Apr 18, 8:44 PM EDT	Severe Thunderstorm Warning	APX	Wexford	31 min
Apr 18, 9:14 PM EDT	Severe Thunderstorm Warning	APX	Missaukee, Roscommon	61 min
Apr 18, 9:23 PM EDT	Severe Thunderstorm Warning	APX	Crawford	22 min
Apr 18, 9:55 PM EDT	Special Marine Warning	APX		50 min
Apr 18, 9:58 PM EDT	Severe Thunderstorm Warning	APX	Oscoda	32 min
Apr 18, 10:19 PM EDT	Severe Thunderstorm Warning	APX	Alcona	41 min
Apr 18, 10:27 PM EDT	Severe Thunderstorm Warning	APX	Gladwin, Roscommon	48 min
Apr 18, 10:45 PM EDT	Special Marine Warning	APX		60 min
Apr 18, 10:49 PM EDT	Special Marine Warning	APX		41 min
Apr 18, 10:49 PM EDT	Special Marine Warning	APX		41 min
Apr 18, 10:49 PM EDT	Special Marine Warning	APX		41 min
Apr 18, 10:58 PM EDT	Severe Thunderstorm Warning	APX	Ogemaw	32 min
Apr 18, 11:22 PM EDT	Special Marine Warning	APX		83 min
Apr 18, 11:22 PM EDT	Special Marine Warning	APX		83 min
Apr 18, 11:34 PM EDT	Special Marine Warning	APX		41 min
Apr 18, 11:34 PM EDT	Special Marine Warning	APX		41 min
Apr 18, 11:34 PM EDT	Special Marine Warning	APX		41 min
Apr 18, 11:58 PM EDT	Special Marine Warning	APX		32 min
Apr 18, 11:58 PM EDT	Special Marine Warning	APX		32 min
Apr 19, 12:30 AM EDT	Special Marine Warning	APX		2 hr
Apr 19, 12:30 AM EDT	Special Marine Warning	APX		2 hr
Apr 19, 12:30 AM EDT	Special Marine Warning	APX		2 hr

Nearby

Severe Thunderstorm Warnings in Michigan, 2002 Every severe thunderstorm warning in 2002

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.