Alert archive / Michigan / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 2, NWS Gaylord, MI

April 11, 2001Ogemaw County, Michigan

NWS Gaylord, MI issued this severe thunderstorm warning at Apr 11, 2001, 10:20 PM EDT for Ogemaw County, Michigan. It was in force for 40 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued
Apr 11, 2001, 10:20 PM EDT (02:20 UTC)
Expired
Apr 11, 2001, 11:00 PM EDT
In force
40 min
Issued by
NWS Gaylord, MI
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Ogemaw County, MI

The nearest sounding before it

Alpena, MI (KAPX), launched 00:00Z, 2.3 hours before the alert went out and 159 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 2001-04-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2001-04-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 463 square meters per square second.19395878Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
550 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
463 m²/s²
0-3 km storm-relative helicity
560 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.5

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KAPX 120221
SVRAPN
MIC129-120300-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GAYLORD MI
1020 PM EDT WED APR 11 2001

THE NATIONAL WEATHER SERVICE IN GAYLORD HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  OGEMAW COUNTY IN NORTHERN LOWER MICHIGAN

* UNTIL 1100 PM EDT

* AT 1018 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 14 MILES SOUTHWEST OF WEST BRANCH...OR ABOUT 10
  MILES NORTH OF GLADWIN...MOVING NORTHEAST AT 50 MPH.

* THE SEVERE THUNDERSTORM WILL REACH...
  WEST BRANCH AROUND 1030 PM EDT
  SELKIRK AROUND 1035 PM EDT
  ROSE CITY AROUND 1040 PM EDT

REMAIN INDOORS AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED. THIS
STORM IS CAPABLE OF PRODUCING WIND GUSTS BETWEEN 60 AND 70 MPH ALONG
WITH DIME SIZED HAIL. WINDS THIS HIGH CAN DOWN TREES AND POWER LINES.

LAT...LON 4419 8417 4425 8406 4439 8389 4451 8389
          4451 8412 4433 8432 4419 8432

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 11, 9:23 PM EDTFlash Flood WarningAPXMontmorency3 hr
Apr 11, 10:11 PM EDTSevere Thunderstorm WarningAPXGladwin34 min
Apr 12, 12:10 AM EDTFlash Flood WarningAPXCrawford, Montmorency6 hr
Apr 12, 12:45 AM EDTSevere Thunderstorm WarningAPXMissaukee45 min
Apr 12, 1:13 AM EDTSevere Thunderstorm WarningAPXRoscommon47 min

Nearby

Severe Thunderstorm Warnings in Michigan, 2001Every severe thunderstorm warning in 2001

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.