Alert archive / Michigan / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 78, NWS Gaylord, MI

September 19, 2002Charlevoix County, Michigan

NWS Gaylord, MI issued this severe thunderstorm warning at Sep 19, 2002, 6:09 PM EDT for Charlevoix County, Michigan. It was in force for 51 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: Sep 19, 2002, 6:09 PM EDT (22:09 UTC)
Expired: Sep 19, 2002, 7:00 PM EDT
In force: 51 min
Issued by: NWS Gaylord, MI
Area: Counties, with a storm outline in the text

County Charlevoix County, MI

The radar

The NCL Michigan radar (KAPX), 101 km from the middle of the area, began a volume at 22:10 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 12:00Z, 10.2 hours before the alert went out and 238 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: 380 J/kg
Mixed-layer CIN: -39 J/kg
Mixed-layer LCL: 626 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 137 m²/s²
0-3 km storm-relative helicity: 205 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.1

Open this sounding in Storm Lab

The text

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

997 
WUUS53 KAPX 192209
SVRAPN
MIC029-192300-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GAYLORD MI
608 PM EDT THU SEP 19 2002

THE NATIONAL WEATHER SERVICE IN GAYLORD HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  BEAVER ISLAND

* UNTIL 700 PM EDT

* AT 608 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  A SEVERE THUNDERSTORM 12 MILES SOUTH OF BEAVER ISLAND...MOVING
  NORTHEAST AT 35 MPH.

* THE SEVERE THUNDERSTORM WILL REACH...
  BEAVER ISLAND BY 620 PM 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 4562 8548 4557 8554 4559 8563 4566 8548

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 19, 4:24 PM EDT	Special Marine Warning	APX		96 min
Sep 19, 5:14 PM EDT	Severe Thunderstorm Warning	APX	Arenac, Gladwin	46 min
Sep 19, 5:25 PM EDT	Special Marine Warning	APX		95 min
Sep 19, 5:25 PM EDT	Special Marine Warning	APX		95 min
Sep 19, 5:40 PM EDT	Severe Thunderstorm Warning	APX	Iosco	50 min
Sep 19, 5:58 PM EDT	Special Marine Warning	APX		92 min
Sep 19, 5:58 PM EDT	Special Marine Warning	APX		92 min
Sep 19, 6:18 PM EDT	Tornado Warning	APX	Emmet	27 min
Sep 19, 6:18 PM EDT	Tornado Warning	APX	Emmet	27 min
Sep 19, 6:21 PM EDT	Severe Thunderstorm Warning	APX	Alcona	39 min
Sep 19, 6:54 PM EDT	Special Marine Warning	APX		66 min
Sep 19, 7:06 PM EDT	Special Marine Warning	APX		54 min
Sep 19, 7:58 PM EDT	Special Marine Warning	APX		62 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.