Alert archive / Michigan / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 4, NWS Detroit, MI

May 5, 1997Washtenaw County, Michigan

NWS Detroit, MI issued this severe thunderstorm warning at May 5, 1997, 11:35 PM EDT for Washtenaw County, Michigan. It was in force for 25 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: May 5, 1997, 11:35 PM EDT (03:35 UTC)
Expired: May 6, 1997, 12:00 AM EDT
In force: 25 min
Issued by: NWS Detroit, MI
Area: Whole counties

County Washtenaw County, MI

The radar

The Detroit radar (KDTX), 58 km from the middle of the area, began a volume at 03:35 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

Cncnati-Daytn, OH (KILN), launched 00:00Z, 3.6 hours before the alert went out and 314 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1726 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: 253 m²/s²
0-3 km storm-relative helicity: 472 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.

048 
WUUS01 KDTX 060337 RRA
SVRDTX
MIC161-060400-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DETROIT PONTIAC MI
1135 PM EDT MON MAY 5 1997
 
THE NATIONAL WEATHER SERVICE IN DETROIT PONTIAC HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL MIDNIGHT EDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTHEAST LOWER MICHIGAN
 
   ...WASHTENAW COUNTY
 
AT 1125 PM A SEVERE THUNDERSTORM WAS JUST NORTH OF ANN ARBOR. THIS
STORM WAS MOVING EAST AT 45 MPH. PENNY SIZE HAIL WAS REPORTED
WITH THIS  STORM AS IT PASSED THROUGH DEXTER. THIS STORM WILL MOVE
THROUGH THE VILLAGE OF SALEM BY 1145 PM.
 
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS.  HEAVY RAINS FLOOD ROADS QUICKLY SO
DONT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.
 
 
 
&

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.

NWS Detroit, MI wrote its last area forecast discussion before this severe thunderstorm warning went out at May 5, 12:22 PM EDT, 11 hours 13 minutes earlier.

Area forecast discussion, May 5, 12:22 PM EDT, 11 hours 13 minutes before

SHORT TERM FORECAST
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
1221 PM EDT MON MAY 5 1997

MIZ047>048-053-052100-

MIDLAND...BAY CITY...SAGINAW...

.NOW...
MOSTLY CLOUDY SKIES AND SCATTERED SHOWERS AND THUNDERSTORMS WILL
BE SEEN ACROSS THE AREA THIS AFTERNOON. SOME OF THESE THUNDERSTORMS
WILL PRODUCE WIND GUSTS UP 45 MILES AN HOUR AND SMALL HAIL.
TEMPERATURES WILL REMAIN AROUND 60 DEGREES. HOWEVER...A STIFF
SOUTHWEST WIND AT 20 TO 30 MPH WILL XMAKE IT FEEL COOLER THAN WHAT
THE THERMOMETER IS READING.

BOYNE

In the hours before

Local storm report, May 5, 9:25 PM EDT, 2 hours 10 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MICHIGAN
925 PM EDT MON MAY 05 1997

TIME(EDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0820 PM    HEMLOCK                   MI   1.75 INCH HAIL
05/05/97   SAGINAW                        PUBLIC REPORTED GOLF BALL
                                          SIZED HAIL IN HEMLOCK

0833 PM    MERRILL                   MI   .75 INCH HAIL
05/05/97   SAGINAW                        SPOTTER REPORTED DIME
                                          SIZED HAIL JUST NORTH OF
                                          MERRILL

Local storm report, May 5, 9:28 PM EDT, 2 hours 7 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MICHIGAN
925 PM EDT MON MAY 05 1997

TIME(EDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0820 PM    HEMLOCK                   MI   1.75 INCH HAIL
05/05/97   SAGINAW                        PUBLIC REPORTED GOLF BALL
                                          SIZED HAIL IN HEMLOCK

0833 PM    MERRILL                   MI   .75 INCH HAIL
05/05/97   SAGINAW                        SPOTTER REPORTED DIME
                                          SIZED HAIL JUST NORTH OF
                                          MERRILL

Local storm report, May 5, 10:07 PM EDT, 1 hour 28 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MICHIGAN
1007 PM EDT MON MAY 05 1997

TIME(EDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....
 0820 PM    HEMLOCK                   MI   1.75 INCH HAIL
05/05/97   SAGINAW                        PUBLIC REPORTED GOLF BALL
                                          SIZED HAIL IN HEMLOCK

0833 PM    MERRILL                   MI   .75 INCH HAIL
05/05/97   SAGINAW                        SPOTTER REPORTED DIME
                                          SIZED HAIL JUST NORTH OF
                                          MERRILL

0950 PM    GRAND BLANC               MI   .75 INCH HAIL
05/05/97   GENESEE                        SPOTTER REPORTED DIME
                                          SIZED HAIL 2 MILES NORTH
                                          OF GRAND BLANC

Local storm report, May 5, 10:09 PM EDT, 1 hour 26 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MICHIGAN
1007 PM EDT MON MAY 05 1997

TIME(EDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....
 0820 PM    HEMLOCK                   MI   1.75 INCH HAIL
05/05/97   SAGINAW                        PUBLIC REPORTED GOLF BALL
                                          SIZED HAIL IN HEMLOCK

0833 PM    MERRILL                   MI   .75 INCH HAIL
05/05/97   SAGINAW                        SPOTTER REPORTED DIME
                                          SIZED HAIL JUST NORTH OF
                                          MERRILL

0950 PM    GRAND BLANC               MI   .75 INCH HAIL
05/05/97   GENESEE                        SPOTTER REPORTED DIME
                                          SIZED HAIL 2 MILES NORTH
                                          OF GRAND BLANC

The office that day

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

Issued	Product	Office	Counties	Lasted
May 5, 8:25 PM EDT	Severe Thunderstorm Warning	DTX	Saginaw	35 min
May 5, 9:41 PM EDT	Severe Thunderstorm Warning	DTX	Genesee	49 min
May 5, 11:42 PM EDT	Severe Thunderstorm Warning	DTX	Wayne	48 min

Nearby

Severe Thunderstorm Warnings in Michigan, 1997 Every severe thunderstorm warning in 1997

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.