Alert archive / Michigan / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 49, NWS Gaylord, MI

May 31, 1998Grand Traverse County, Leelanau County, Wexford County, Michigan

NWS Gaylord, MI issued this severe thunderstorm warning at May 31, 1998, 4:04 AM EDT for Grand Traverse County, Leelanau County, Wexford County, Michigan. It was in force for 46 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: May 31, 1998, 4:04 AM EDT (08:04 UTC)
Expired: May 31, 1998, 4:50 AM EDT
In force: 46 min
Issued by: NWS Gaylord, MI
Area: Whole counties

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

What was reported inside it

Time	Report	Where	Remark
May 31, 5:00 AM EDT	Thunderstorm Wind 50	Traverse City, MI	Strong thunderstorm winds downed numerous trees and powerlines.

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
May 31, 3:45 AM EDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 8.1 hours before the alert went out and 190 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: 450 J/kg
Mixed-layer CIN: -48 J/kg
Mixed-layer LCL: 891 m above ground
0-6 km bulk shear: 59 kt
0-1 km storm-relative helicity: 358 m²/s²
0-3 km storm-relative helicity: 509 m²/s²
Significant tornado parameter: 0.9
Supercell composite: 9.7

Open this sounding in Storm Lab

The text

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

961 
WUUS1 KAPN 310807 RRA
SVRAPN
MIC055-089-165-MIZ514-535-536-310850-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GAYLORD MI
404 AM EDT SUN MAY 31 1998

THE NATIONAL WEATHER SERVICE IN GAYLORD HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  LEELANAU COUNTY INCLUDING ADJACENT COASTAL WATERS IN NORTHWESTERN
  LOWER MICHIGAN
  GRAND TRAVERSE COUNTY INCLUDING ADJACENT COASTAL WATERS IN
  NORTHWESTERN LOWER MICHIGAN
  WEXFORD COUNTY IN NORTHWESTERN LOWER MICHIGAN

* UNTIL 450 AM EDT

* AT 402 AM EDT... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS 23 MILES SOUTHWEST OF EMPIRE MOVING
  NORTHEAST AT 50 MPH.

* THE SEVERE THUNDERSTORMS WILL REACH...
  EMPIRE BY 424 AM EDT
  BURDICKVILLE BY 431 AM EDT
  INTERLOCHEN BY 433 AM EDT
  KINGSLEY BY 442 AM EDT
  TRAVERSE CITY BY 444 AM EDT

A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. SEVERE
THUNDERSTORMS OCCASIONALLY PRODUCE TORNADOES...AND CAN DO SO
RATHER QUICKLY. MOVE INTO AN INTERIOR ROOM ON THE LOWEST FLOOR.

OX/HURLEY

The office that day

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

Issued	Product	Office	Counties	Lasted
May 31, 12:50 AM EDT	Severe Thunderstorm Warning	APX	Chippewa, Mackinac	50 min
May 31, 2:30 AM EDT	Severe Thunderstorm Warning	APX	Benzie, Leelanau	50 min
May 31, 3:44 AM EDT	Severe Thunderstorm Warning	APX	Benzie, Manistee	61 min
May 31, 4:48 AM EDT	Severe Thunderstorm Warning	APX	Crawford, Kalkaska, Missaukee, Roscommon	47 min
May 31, 4:50 AM EDT	Severe Thunderstorm Warning	APX	Benzie, Manistee	50 min
May 31, 4:56 AM EDT	Severe Thunderstorm Warning	APX	Grand Traverse, Wexford	49 min
May 31, 5:21 AM EDT	Tornado Warning	APX	Antrim, Kalkaska	49 min
May 31, 5:26 AM EDT	Severe Thunderstorm Warning	APX	Crawford, Roscommon	49 min
May 31, 5:26 AM EDT	Severe Thunderstorm Warning	APX	Otsego	49 min
May 31, 5:46 AM EDT	Tornado Warning	APX	Crawford	49 min
May 31, 5:49 AM EDT	Severe Thunderstorm Warning	APX	Montmorency, Oscoda	46 min
May 31, 5:49 AM EDT	Severe Thunderstorm Warning	APX	Ogemaw	46 min
May 31, 6:04 AM EDT	Tornado Warning	APX	Oscoda	51 min
May 31, 6:07 AM EDT	Severe Thunderstorm Warning	APX	Arenac, Iosco	63 min
May 31, 6:07 AM EDT	Severe Thunderstorm Warning	APX	Alcona, Alpena	63 min

Nearby

Severe Thunderstorm Warnings in Michigan, 1998 Every severe thunderstorm warning in 1998

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.