Alert archive / Michigan / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 13, NWS Detroit, MI

April 19, 2002Tuscola County, Michigan

NWS Detroit, MI issued this severe thunderstorm warning at Apr 19, 2002, 2:06 AM EDT for Tuscola County, Michigan. It was in force for 39 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 19, 2002, 2:06 AM EDT (06:06 UTC)
Expired
Apr 19, 2002, 2:45 AM EDT
In force
39 min
Issued by
NWS Detroit, MI
Area
Counties, with a storm outline in the text

County Tuscola County, MI

The radar

The Detroit radar (KDTX), 77 km from the middle of the area, began a volume at 06:08 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.

What was reported inside it

TimeReportWhereRemark
Apr 19, 2:30 AM EDTHail 0.75Millington, 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 19, 1:00 AM EDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Detroit, MI (KDTX), launched 00:00Z, 6.1 hours before the alert went out and 75 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 190606
SVRDTX
MIC157-190645-

BULLETIN - EAS ACTIVATION/IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
205 AM EDT FRI APR 19 2002

THE NATIONAL WEATHER SERVICE HAS ISSUED A

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

* UNTIL 245 AM EDT

* AT 205 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
  SEVERE THUNDERSTORMS 6 MILES WEST OF MILLINGTON...OR 17 MILES NORTH
  OF FLINT...MOVING EAST AT 40 MPH.

* THE SEVERE THUNDERSTORMS WILL BE NEAR...
  MAYVILLE AT 220 AM EDT
  EAST DAYTON AT 225 AM EDT
  KINGSTON...DEFORD AT 235 AM EDT

THESE STORMS ARE CAPABLE OF PRODUCING HAIL UP TO ONE INCH IN
DIAMETER. HAIL OF THIS SIZE MAY DAMAGE WINDOWS...ALUMINUM SIDING...OR
VEHICLES...IF ACCOMPANIED BY STRONG WIND GUSTS. STAY INSIDE AWAY FROM
WINDOWS UNTIL THE STORMS HAVE PASSED.

LAT...LON 4341 8363 4324 8369 4333 8311 4356 8312

MANN WAG

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 18, 10:33 PM EDTSevere Thunderstorm WarningDTXMidland57 min
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, 2:13 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; radar from the NEXRAD Level II archive.