Alert archive / Michigan / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 2, NWS Detroit, MI

April 18, 2002Midland County, Michigan

NWS Detroit, MI issued this severe thunderstorm warning at Apr 18, 2002, 10:33 PM EDT for Midland County, Michigan. It was in force for 57 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, 10:33 PM EDT (02:33 UTC)
Expired
Apr 18, 2002, 11:30 PM EDT
In force
57 min
Issued by
NWS Detroit, MI
Area
Counties, with a storm outline in the text

County Midland County, MI

What was reported inside it

TimeReportWhereRemark
Apr 18, 11:00 PM EDTHail 0.88Coleman, 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 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

Detroit, MI (KDTX), launched 00:00Z, 2.6 hours before the alert went out and 153 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, Detroit, MI at 00:00Z on 2002-04-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1198 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, Detroit, MI at 00:00Z on 2002-04-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 89 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
1198 J/kg
Mixed-layer CIN
-25 J/kg
Mixed-layer LCL
1715 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
89 m²/s²
0-3 km storm-relative helicity
153 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KDTX 190233
SVRDTX
MIC111-190330-

BULLETIN - EAS ACTIVATION/IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
1032 PM EDT THU APR 18 2002

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  MIDLAND COUNTY IN SOUTHEAST MICHIGAN

* UNTIL 1130 PM EDT

* AT 1032 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 13 MILES WEST OF COLEMAN...OR 8 MILES SOUTHWEST
  OF CLARE...MOVING EAST AT 45 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  COLEMAN AT 1045 PM EDT
  NORTH BRADLEY AT 1050 PM EDT
  EDENVILLE AT 1055 PM EDT
  
THIS STORM HAS THE POTENTIAL OF PRODUCING WINDS UP TO 60 MPH. A WIND
GUST TO 60 MPH IS CAPABLE OF PUSHING OVER SHALLOW ROOTED TREES...AND
BREAKING OFF TREE LIMBS ABOUT THE SIZE OF YOUR WRIST. STAY AWAY FROM
WINDOWS UNTIL THE STORM HAS PASSED.

LAT...LON 4383 8489 4365 8487 4369 8418 4398 8419

MANN WAG

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 18, 11:02 PM EDTSpecial Marine WarningDTX118 min
Apr 18, 11:30 PM EDTSevere Thunderstorm WarningDTXMidland60 min
Apr 19, 12:48 AM EDTSevere Thunderstorm WarningDTXTuscola57 min
Apr 19, 1:00 AM EDTSpecial Marine WarningDTX75 min
Apr 19, 1:00 AM EDTSpecial Marine WarningDTX75 min
Apr 19, 1:13 AM EDTSevere Thunderstorm WarningDTXLivingston47 min
Apr 19, 1:30 AM EDTSevere Thunderstorm WarningDTXGenesee30 min
Apr 19, 1:33 AM EDTSevere Thunderstorm WarningDTXSaginaw42 min
Apr 19, 1:36 AM EDTSevere Thunderstorm WarningDTXMidland39 min
Apr 19, 1:38 AM EDTSevere Thunderstorm WarningDTXLapeer52 min
Apr 19, 1:46 AM EDTSevere Thunderstorm WarningDTXSaint Clair44 min
Apr 19, 1:56 AM EDTSpecial Marine WarningDTX49 min
Apr 19, 1:59 AM EDTSevere Thunderstorm WarningDTXGenesee46 min
Apr 19, 2:02 AM EDTSevere Thunderstorm WarningDTXGenesee43 min
Apr 19, 2:06 AM EDTSevere Thunderstorm WarningDTXTuscola39 min
Apr 19, 2:13 AM EDTSevere Thunderstorm WarningDTXSaginaw32 min
Apr 19, 2:49 AM EDTSevere Thunderstorm WarningDTXGenesee26 min
Apr 19, 2:56 AM EDTSevere Thunderstorm WarningDTXLapeer49 min
Apr 19, 2:59 AM EDTSpecial Marine WarningDTX46 min
Apr 19, 3:30 AM EDTSpecial Marine WarningDTX60 min

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.