Alert archive / Michigan / Severe Thunderstorm Warnings in 1992

Severe Thunderstorm Warning 21, NWS Detroit, MI

June 17, 1992Clare County, Roscommon County, Michigan

NWS Detroit, MI issued this severe thunderstorm warning at Jun 17, 1992, 2:49 PM EDT for Clare County, Roscommon County, Michigan. It was in force for 56 min.

The area

The counties it named.

The facts

Issued
Jun 17, 1992, 2:49 PM EDT (18:49 UTC)
Expired
Jun 17, 1992, 3:45 PM EDT
In force
56 min
Issued by
NWS Detroit, MI
Area
Whole counties

Counties Clare County, MI, Roscommon County, MI

The nearest sounding before it

Detroit, MI (KFNT), launched 12:00Z, 6.8 hours before the alert went out and 192 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 12:00Z on 1992-06-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 264 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 12:00Z on 1992-06-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 84 square meters per square second.1939Sfc1 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
264 J/kg
Mixed-layer CIN
-141 J/kg
Mixed-layer LCL
945 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
84 m²/s²
0-3 km storm-relative helicity
128 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.9

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KHTL 171849
SVRHTL
MIC035-143-171945-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE HOUGHTON LAKE MI
249 PM EDT WED JUN 17 1992
 
THE NATIONAL WEATHER SERVICE IN HOUGHTON LAKE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  345 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN CENTRAL MICHIGAN
 
   ...CLARE COUNTY
 
IN NORTH CENTRAL MICHIGAN
 
   ...ROSCOMMON COUNTY
 
A LINE OF SEVERE THUNDERSTORMS WAS INDICATED ON RADAR MOVING TO THE
NORTHEAST AT AROUND 60 MPH. THESE THUNDERSTORMS WILL ENTER CLARE
AND ROSCOMMON COUNTIES BY 300 PM EDT AND PERSONS IN THE TOWNS OF
CLARE...FARWELL...HARRISON...HOUGHTON LAKE...HIGGINS LAKE AND
ROSCOMMON SHOULD TAKE SHELTER IMMEDIATELY. SPOTTER REPORTS
ALSO INDICATE THAT SEVERAL FUNNEL CLOUDS HAVE SPAWNED FROM THESE
SEVERE THUNDERSTORMS.
 
 
 
 
A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA.  REMEMBER
SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES
WITH LITTLE OR NO ADVANCE WARNING.  REMAIN CALM BUT BE ALERT TO
RAPIDLY CHANGING WEATHER CONDITIONS.
 
NNNN

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Jun 17, 11:37 AM EDT, 3 hours 12 minutes before
SAFETY RULES FOR SEVERE THUNDERSTORMS
NATIONAL WEATHER SERVICE ANN ARBOR MI
1140 AM EDT WED JUN 17 1992

THERE IS A HIGH PROBABILITY OF SEVERE THUNDERSTORMS AND TORNADOS IN
ALL OF MICHIGAN THIS AFTERNOON AND TONIGHT. IN THE INTEREST OF PUBLIC
SAFETY...THE FOLLOWING SAFETY RULES ARE PROVIDED. PUBLIC AND COMMERCIAL
BROADCAST STATIONS SERVING THE STATE ARE ASKED TO BROADCAST THESE
MESSAGES OCCASIONALLY THROUGHOUT THE DAY AND FREQUENTLY DURING ANY
WATCH OR WARNING SITUATIONS.
          ..................................................

THE STRONG WIND GUSTS OF A SEVERE THUNDERSTORM CAN DAMAGE BUILDINGS...
KNOCK DOWN TREES AND CREATE A HAZARD DUE TO WIND BLOWN DEBRIS SIMILAR
TO A SMALL TORNADO.  INDOORS...STAY AWAY FROM WINDOWS AND GO TO THE
SAFEST LOCATION ON THE LOWEST LEVEL OF YOUR HOUSE.  MOBILE HOMES ARE
PARTICULARLY VULNERABLE TO HIGH WINDS.  IF SEVERE THUNDERSTORMS
APPROACH...YOU SHOULD LEAVE AN UNANCHORED MOBILE HOME AND SEEK NEARBY
SHELTER. WHEN BOATING..ALWAYS STAY TUNED TO THE LATEST WEATHER REPORTS
AND RETURN TO SAFE HARBOR BEFORE STRONG WINDS ARRIVE.
          ..................................................

IT IS IMPORTANT TO REMEMBER THAT SEVERE THUNDERSTORMS CAN PRODUCE
TORNADOES.  LISTEN TO YOUR WEATHER RADIO OR OTHER LOCAL RADIO OR
TELEVISION TO LEARN IF A WARNING HAS BEEN ISSUED FOR YOUR AREA.  ALSO...
KEEP A CLOSE WATCH ON THE THUNDERSTORMS AS TORNADOES CAN FORM QUICKLY
BEFORE IT IS POSSIBLE TO ISSUE A WARNING.  IF YOU SEE A TORNADO MOVING
TOWARD YOU OR HEAR A TORNADO WARNING FOR YOUR AREA...YOU SHOULD FIND
SHELTER...BELOW GROUND LEVEL IF POSSIBLE...BUT IF ABOVE GROUND...GET
INTO A SMALL INTERIOR SPACE ON THE LOWEST FLOOR AND STAY AWAY FROM
OUTSIDE WALLS...DOORS...AND WINDOWS...AND STAY OUT OF AUDITORIUMS AND
GYMNASIUMS.
Special weather statement, Jun 17, 1:51 PM EDT, 58 minutes before
MIZ001>083-172000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ANN ARBOR MI
150 PM EDT WED JUN 17 1992

...A TORNADO WATCH HAS BEEN ISSUED FOR SOUTH CENTRAL AND SOUTHEAST
UPPER MICHIGAN... AND THE WEST HALF OF LOWER MICHIGAN...

TORNADO WATCH NUMBER 388 HAS BEEN ISSUED FOR SOUTH CENTRAL AND
SOUTHEAST UPPER MICHIGAN... AND THE WEST HALF OF LOWER MICHIGAN UNTIL
900 PM THIS EVENING.

AT 145 PM CLUSTERS OF THUNDERSTORMS WERE OVER NORTH MINNESOTA... WEST
AND SOUTH CENTRAL UPPER MICHIGAN... EAST WISCONSIN... NORTH ILLINOIS...
LAKE MICHIGAN... AND WEST CENTRAL AND NORTHWEST LOWER MICHIGAN. STORMS
WERE MOVING MAINLY TO THE NORTHEAST... AT 40 TO 50 MPH.

VERY MOIST AND UNSTABLE AIR CONTINUES TO SURGE NORTHWARD AND
NORTHEASTWARD OVER MICHIGAN AND FEED THESE STORMS.

TORNADOES ARE NATURES MOST VIOLENT STORMS.  IN A HOME...ONE OF THE
BEST SHELTERS IS IN THE BASEMENT UNDER HEAVY FURNITURE AND WHERE
OVERHEAD SUPPORT AND PROTECTION IS GREATEST.  IF THERE IS NO BASEMENT..
GO TO THE CENTER OF THE HOUSE ON THE LOWEST FLOOR.  GET INTO A CLOSET..
INTERIOR HALL...AND/OR UNDER HEAVY FURNITURE.  COVER YOURSELF WITH A
HEAVY BLANKET OR SIMILAR OBJECT.  IN A SCHOOL...OFFICE...OR OTHER TYPE
OF INSTITUTIONAL BUILDING...GO QUICKLY TO A BASEMENT IF AVAILABLE.  IF
NONE...GO TO A CENTRAL HALL OR CORRIDOR ON THE LOWEST FLOOR.  KEEP AWAY
FROM OUTSIDE WALLS...DOORS AND WINDOWS.  STAY OUT OF AUDITORIUMS OR
GYMNASIUMS.  IF IN OPEN COUNTRY OR IN A CAR AND YOU CANNOT AVOID THE
PATH OF THE STORM...GET INTO A REINFORCED BUILDING OR INTO A DITCH...
DEPRESSION...OR CULVERT.  IF YOU ARE IN A MOBILE HOME...WHETHER IT IS
TIED DOWN OR NOT...ABANDON IT AND GO TO A COMMUNITY SHELTER OR
REINFORCED BUILpDING...OR GET INTO A DITCH...DEPRESSION...OR CULVERT.

MRK
Special weather statement, Jun 17, 2:12 PM EDT, 37 minutes before
MIZ001>083-172030-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ANN ARBOR MI
212 PM EDT WED JUN 17 1992

...ALL OF UPPER MICHIGAN HAS BEEN PLACED UNDER A TORNADO WATCH UNTIL
900 PM EDT THIS EVENIN

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 17, 3:56 PM EDTSevere Thunderstorm WarningDTXClare, Crawford, Roscommon64 min
Jun 17, 5:33 PM EDTSevere Thunderstorm WarningDTXClare, Roscommon42 min
Jun 17, 5:36 PM EDTSevere Thunderstorm WarningDTXCrawford39 min
Jun 17, 5:51 PM EDTTornado WarningDTXClare, Roscommon33 min
Jun 17, 6:16 PM EDTTornado WarningDTXMidland29 min
Jun 17, 6:27 PM EDTSevere Thunderstorm WarningDTXBay48 min
Jun 17, 6:40 PM EDTSevere Thunderstorm WarningDTXSaginaw50 min
Jun 17, 6:47 PM EDTTornado WarningDTXSaginaw28 min
Jun 17, 6:50 PM EDTSevere Thunderstorm WarningDTXGenesee, Shiawassee, Tuscola40 min
Jun 17, 7:06 PM EDTSevere Thunderstorm WarningDTXHuron54 min
Jun 17, 7:20 PM EDTSevere Thunderstorm WarningDTXLivingston40 min
Jun 17, 7:27 PM EDTSevere Thunderstorm WarningDTXShiawassee28 min
Jun 17, 7:27 PM EDTSevere Thunderstorm WarningDTXGenesee, Tuscola48 min
Jun 17, 7:31 PM EDTSevere Thunderstorm WarningDTXOakland44 min
Jun 17, 7:37 PM EDTSevere Thunderstorm WarningDTXLapeer, Sanilac68 min
Jun 17, 7:42 PM EDTTornado WarningDTXHuron33 min

Nearby

Severe Thunderstorm Warnings in Michigan, 1992Every severe thunderstorm warning in 1992

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.