Alert archive / Michigan / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 22, NWS Gaylord, MI

April 18, 2002Oscoda County, Michigan

NWS Gaylord, MI issued this severe thunderstorm warning at Apr 18, 2002, 9:58 PM EDT for Oscoda County, Michigan. It was in force for 32 min. 1 report 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, 9:58 PM EDT (01:58 UTC)
Expired
Apr 18, 2002, 10:30 PM EDT
In force
32 min
Issued by
NWS Gaylord, MI
Area
Counties, with a storm outline in the text

County Oscoda County, MI

What was reported inside it

TimeReportWhereRemark
Apr 18, 10:00 PM EDTThunderstorm Wind 50 ECountywide, MINumerous 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.

IssuedProductOfficeLasted
Apr 18, 7:45 PM EDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Alpena, MI (KAPX), launched 00:00Z, 2.0 hours before the alert went out and 135 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-pSkew-T log-p diagram, Alpena, MI at 00:00Z on 2002-04-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 272 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Alpena, MI at 00:00Z on 2002-04-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 38 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
272 J/kg
Mixed-layer CIN
-24 J/kg
Mixed-layer LCL
2073 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
38 m²/s²
0-3 km storm-relative helicity
121 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KAPX 190158
SVRAPN
MIC135-190230-

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

THE NATIONAL WEATHER SERVICE IN GAYLORD HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  OSCODA COUNTY IN NORTHEAST LOWER MICHIGAN

* UNTIL 1030 PM EDT

* AT 955 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 3 MILES WEST OF MIO...MOVING NORTHEAST AT 50
  MPH.

* THE SEVERE THUNDERSTORM WILL REACH...
  COMINS AROUND 1005 PM EDT

AT 955 PM EDT A WEATHER SPOTTER REPORTED SEVERAL TREES DOWN IN 
LUZERNE.

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

LAT...LON 4467 8389 4457 8419 4473 8430 4485 8389

&

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 18, 8:08 PM EDTSevere Thunderstorm WarningAPXGrand Traverse, Leelanau, Wexford37 min
Apr 18, 8:36 PM EDTSevere Thunderstorm WarningAPXAntrim, Kalkaska39 min
Apr 18, 8:44 PM EDTSevere Thunderstorm WarningAPXWexford31 min
Apr 18, 9:14 PM EDTSevere Thunderstorm WarningAPXMissaukee, Roscommon61 min
Apr 18, 9:23 PM EDTSevere Thunderstorm WarningAPXCrawford22 min
Apr 18, 9:55 PM EDTSpecial Marine WarningAPX50 min
Apr 18, 10:19 PM EDTSevere Thunderstorm WarningAPXAlcona41 min
Apr 18, 10:27 PM EDTSevere Thunderstorm WarningAPXGladwin, Roscommon48 min
Apr 18, 10:45 PM EDTSpecial Marine WarningAPX60 min
Apr 18, 10:49 PM EDTSpecial Marine WarningAPX41 min
Apr 18, 10:49 PM EDTSpecial Marine WarningAPX41 min
Apr 18, 10:49 PM EDTSpecial Marine WarningAPX41 min
Apr 18, 10:58 PM EDTSevere Thunderstorm WarningAPXOgemaw32 min
Apr 18, 11:22 PM EDTSpecial Marine WarningAPX83 min
Apr 18, 11:22 PM EDTSpecial Marine WarningAPX83 min
Apr 18, 11:34 PM EDTSpecial Marine WarningAPX41 min
Apr 18, 11:34 PM EDTSpecial Marine WarningAPX41 min
Apr 18, 11:34 PM EDTSpecial Marine WarningAPX41 min
Apr 18, 11:58 PM EDTSpecial Marine WarningAPX32 min
Apr 18, 11:58 PM EDTSpecial Marine WarningAPX32 min
Apr 19, 12:30 AM EDTSpecial Marine WarningAPX2 hr
Apr 19, 12:30 AM EDTSpecial Marine WarningAPX2 hr
Apr 19, 12:30 AM EDTSpecial Marine WarningAPX2 hr

Nearby

Severe Thunderstorm Warnings in Michigan, 2002Every 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.