Alert archive / Michigan / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 45, NWS Gaylord, MI

August 8, 2001Iosco County, Ogemaw County, Michigan

NWS Gaylord, MI issued this severe thunderstorm warning at Aug 8, 2001, 3:25 PM EDT for Iosco County, Ogemaw County, Michigan. It was in force for 65 min. 1 report came from inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties, with what was reported inside it.

The facts

Issued: Aug 8, 2001, 3:25 PM EDT (19:25 UTC)
Expired: Aug 8, 2001, 4:30 PM EDT
In force: 65 min
Issued by: NWS Gaylord, MI
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties Iosco County, MI, Ogemaw County, MI

What was reported inside it

Time	Report	Where	Remark
Aug 8, 4:04 PM EDT	Hail 0.88	Tawas City, MI

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 nearest sounding before it

Alpena, MI (KAPX), launched 12:00Z, 7.4 hours before the alert went out and 128 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: 1217 J/kg
Mixed-layer CIN: -151 J/kg
Mixed-layer LCL: 1370 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 98 m²/s²
0-3 km storm-relative helicity: 178 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

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

940 
WUUS53 KAPX 081924
SVRAPN
MIC069-129-082030-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GAYLORD MI
325 PM EDT WED AUG 8 2001

THE NATIONAL WEATHER SERVICE IN GAYLORD HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  IOSCO COUNTY IN NORTHERN LOWER MICHIGAN
  OGEMAW COUNTY IN NORTHERN LOWER MICHIGAN

* UNTIL 430 PM EDT

* AT 320 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 2 MILES NORTHEAST OF RIFLE RIVER STATE PARK...
  OR ABOUT 15 MILES SOUTHWEST OF GLENNIE...MOVING SOUTHEAST AT 30 MPH.

* THE SEVERE THUNDERSTORM WILL REACH...
  HALE AROUND 330 PM EDT.
  INTERSECTION OF M-55 AND M-65 AROUND 335 PM EDT.
  TAWAS CITY AROUND 400 PM EDT

REMAIN INDOORS AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED. THIS
STORM IS CAPABLE OF PRODUCING HAIL UP TO ONE INCH IN DIAMETER. HAIL
OF THIS SIZE CAN DAMAGE WINDOWS...ALUMINUM SIDING...AND VEHICLES WHEN
ACCOMPANIED BY STRONG WIND GUSTS.

LAT...LON 4452 8395 4436 8405 4403 8324 4427 8308

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 8, 11:35 AM EDT	Severe Thunderstorm Warning	APX	Mackinac	70 min
Aug 8, 12:04 PM EDT	Severe Thunderstorm Warning	APX	Chippewa	71 min
Aug 8, 12:35 PM EDT	Severe Thunderstorm Warning	APX	Mackinac	40 min
Aug 8, 12:43 PM EDT	Severe Thunderstorm Warning	APX	Charlevoix, Emmet	47 min
Aug 8, 1:18 PM EDT	Severe Thunderstorm Warning	APX	Cheboygan	42 min

Nearby

Severe Thunderstorm Warnings in Michigan, 2001 Every severe thunderstorm warning in 2001

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.