Alert archive / Michigan / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 50, NWS Gaylord, MI

July 29, 2002Crawford County, Otsego County, Michigan

NWS Gaylord, MI issued this severe thunderstorm warning at Jul 29, 2002, 9:10 AM EDT for Crawford County, Otsego County, Michigan. It was in force for 50 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 29, 2002, 9:10 AM EDT (13:10 UTC)
Expired: Jul 29, 2002, 10:00 AM EDT
In force: 50 min
Issued by: NWS Gaylord, MI
Area: Counties, with a storm outline in the text

Counties Crawford County, MI, Otsego County, MI

The radar

The NCL Michigan radar (KAPX), 16 km from the middle of the area, began a volume at 13:14 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

Alpena, MI (KAPX), launched 12:00Z, 1.2 hours before the alert went out and 170 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: 1559 J/kg
Mixed-layer CIN: -32 J/kg
Mixed-layer LCL: 761 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 8 m²/s²
0-3 km storm-relative helicity: 71 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.5

Open this sounding in Storm Lab

The text

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

597 
WUUS53 KAPX 291310
SVRAPN
MIC039-137-291400-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GAYLORD MI
910 AM EDT MON JUL 29 2002

THE NATIONAL WEATHER SERVICE IN GAYLORD HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CRAWFORD COUNTY IN NORTHWEST LOWER MICHIGAN
  OTSEGO COUNTY IN NORTHWEST LOWER MICHIGAN

* UNTIL 1000 AM EDT

* AT 909 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
  A SEVERE THUNDERSTORM 8 MILES WEST OF FREDERIC MOVING NORTHEAST AT 
  35 MPH.

* THE SEVERE THUNDERSTORM WILL REACH...
  FREDERIC AROUND 915 AM EDT
  WATERS...OTSEGO LAKE STATE PARK AROUND 925 AM EDT  
  SPARR...JOHANNESBURG AROUND 940 AM EDT

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 OR LARGER HAIL. WINDS THIS HIGH CAN DOWN TREES AND
POWER LINES.

LAT...LON 4499 8437 4467 8485 4494 8485 4520 8453
          4520 8437

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 29, 8:55 AM EDT	Severe Thunderstorm Warning	APX	Kalkaska	50 min
Jul 29, 10:00 AM EDT	Special Marine Warning	APX		90 min
Jul 29, 10:00 AM EDT	Special Marine Warning	APX		90 min
Jul 29, 4:18 PM EDT	Special Marine Warning	APX		27 min

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.