Alert archive / Michigan / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 30, NWS Gaylord, MI

May 31, 2002Roscommon County, Michigan

NWS Gaylord, MI issued this severe thunderstorm warning at May 31, 2002, 1:40 AM EDT for Roscommon County, Michigan. It was in force for 35 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
May 31, 2002, 1:40 AM EDT (05:40 UTC)
Expired
May 31, 2002, 2:15 AM EDT
In force
35 min
Issued by
NWS Gaylord, MI
Area
Counties, with a storm outline in the text

County Roscommon County, MI

The radar

The NCL Michigan radar (KAPX), 67 km from the middle of the area, began a volume at 05:41 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 00:00Z, 5.7 hours before the alert went out and 198 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 2002-05-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 644 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 2002-05-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 119 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
644 J/kg
Mixed-layer CIN
-17 J/kg
Mixed-layer LCL
1250 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
119 m²/s²
0-3 km storm-relative helicity
150 m²/s²
Significant tornado parameter
0.3
Supercell composite
2.8

Open this sounding in Storm Lab

The text

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

912 
WUUS53 KAPX 310540
SVRAPN
MIC143-310615-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GAYLORD MI
140 AM EDT FRI MAY 31 2002

THE NATIONAL WEATHER SERVICE IN GAYLORD HAS ISSUED A

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

* UNTIL 215 AM EDT

* AT 136 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER HOUGHTON LAKE...MOVING EAST AT 40 MPH.

* THE SEVERE THUNDERSTORM WILL REACH...
  TWIN LAKES AREA AROUND 200 AM EDT

REMAIN INDOORS AND AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED. THIS
STORM IS CAPABLE OF PRODUCING WIND GUSTS UP TO 60 MPH ALONG WITH 
HAIL UP TO ONE INCH IN DIAMETER. 

LAT...LON 4439 8482 4421 8489 4418 8439 4434 8438

The office that day

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

IssuedProductOfficeCountiesLasted
May 31, 12:07 AM EDTSpecial Marine WarningAPX53 min
May 31, 12:13 AM EDTSevere Thunderstorm WarningAPXBenzie, Grand Traverse47 min
May 31, 12:54 AM EDTSevere Thunderstorm WarningAPXMissaukee36 min
May 31, 1:15 AM EDTSevere Thunderstorm WarningAPXAntrim, Otsego30 min
May 31, 1:54 AM EDTSevere Thunderstorm WarningAPXAntrim, Otsego36 min
May 31, 1:58 AM EDTSevere Thunderstorm WarningAPXCrawford32 min
May 31, 2:14 AM EDTSevere Thunderstorm WarningAPXOscoda46 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.