Alert archive / Michigan / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 1, NWS Detroit, MI

April 12, 1994Saginaw County, Shiawassee County, Michigan

NWS Detroit, MI issued this severe thunderstorm warning at Apr 12, 1994, 10:44 PM EDT for Saginaw County, Shiawassee County, Michigan. It was in force for 31 min.

The area

The counties it named.

The facts

Issued
Apr 12, 1994, 10:44 PM EDT (02:44 UTC)
Expired
Apr 12, 1994, 11:15 PM EDT
In force
31 min
Issued by
NWS Detroit, MI
Area
Whole counties

Counties Saginaw County, MI, Shiawassee County, MI

The nearest sounding before it

Detroit, MI (KFNT), launched 00:00Z, 2.7 hours before the alert went out and 72 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 1994-04-13Temperature 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, Detroit, MI at 00:00Z on 1994-04-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 368 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
510 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
368 m²/s²
0-3 km storm-relative helicity
373 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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, Apr 12, 8:48 PM EDT, 1 hour 56 minutes before
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Special weather statement, Apr 12, 8:51 PM EDT, 1 hour 53 minutes before
MIZ053-060-130350-

SPECIAL WEATHER STATEMENT...COR
NATIONAL WEATHER SERVICE FLINT  MI
848 PM EDT TUE APR 12 1994

...THUNDERSTORMS HAVE DEVELOPED OVER SOUTHERN SAGINAW COUNTY...

AT 843 PM RADAR INDICATED A STRONG THUNDERSTORM NEAR BURT 15 SSE OF
SAGINAW. THIS STORM IS CAPABLE OF PRODUCING HEAVY RAIN...GUSTY WINDS
...DANGEROUS LIGHTNING AND SMALL HAIL. THE STORM WAS MOVING TO THE
NORTHEAST AT 40 MPH AND WILL BE AT ST CHARLES BY 9 PM.

SOME ObF THESE STORMS MAY CONTAIN SMALL HAIL...GUSTY WINDS...DEADLY
LIGHTNING AND VERY HEAVY DOWNPOURS OF RAIN.

THIES
Special weather statement, Apr 12, 9:48 PM EDT, 56 minutes before
MIZ047-049>053-055>060-062-130500-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE FLINT  MI
950 PM EDT TUE APR 12 1994

...SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR ALL OF EAST CENTRAL
LOWER MICHIGAN UNTIL 300 AM EDT...

A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR ALL OF EAST CENTRAL LOWER
MICHIGAN UNTIL 300 AM EDT.  THIS INCLUDES BAY...SAGINAW...MIDLAND...
GENESEE...LAPEER...SHAIWASSEE...TUSCOLA...HURON AND SANILAC COUNTIES.

AT 945 PM RADAR INDICATED AN AREA POSSIBLY CONTAINING THUNDERSTORMS
IN NORTHERN SAGINAW COUNTY AND SOUTHERN BAY COUNTY.  SPOTTERS REPORTED
PEA SIZE HAIL IN MUNGER...16 MILES NORTHEAST OF SAGINAW.

IF THREATENING WEATHER APPROACHES OR A WARNING IS ISSUED MOVE TnO A
SAFE PLACE...PREFERABLY INSIDE A STRONG BUILDING ON THE LOWEST FLOOR
AWAY FROM WINDOWS.
LRT
Special weather statement, Apr 12, 10:00 PM EDT, 44 minutes before
MIZ063-068>070-075-076-082-083-130400-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DETROIT MI
1000 PM EDT TUE APR 12 1994

...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR ALL OF SOUTHEAST
LOWER MICHIGAN UNTIL 300 AM EDT...

A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR ALL OF SOUTHEAST LOWER
MICHIGAN UNTIL 300 AM EDT. THIS INCLUDES THE COUNTIES OF WAYNE...OAKLAND
...WASHTENAW...MACOMB...LIVINGSTON...ST CLAIR...LENAWEE AND MONROE. SOME
CITIES INCLUDED IN THE WATCH AREA ARE DETROIT...ANN ARBOR...PONTIAC...PORT
HURON...MT CLEMENS...ADRIAN...HOWELL AND MONROE.

AT 955 PM...WEATHER RADAR DETECTED AN ISOLATED THUNDERSTORM OVER ARMADA
IN MACOMB COUNTY...36 MILES NORTH-NORTHEAST OF DETROIT. THE STORM WAS
MOVING TO THE NORTHEAST AT 40 MILES AN HOUR AND WILL HIT THE TOWN OF
EMMET IN ST CLAIR COUNTY...47 MILES NORTH-NORTHEAST OF DETROIT...BY 1015 PM.

NO SEVERE WEATHER WAS OCCURING IN SOUTHEAST LOWER MICHIGAN AT THIS TIME...
HOWEVER...CONDITIONS ARE FAVORABLE FOR THE FORMATION OF SEVERE
THUNDERSTORMS.

SEVERE THUNDERSTORMS CAN PRODUCE WINDS IN EXCESS OF 58 MILES AN HOUR
...LARGE HAIL AND DANGEROUS LIGHTNING. IF YOU ARE CAUGHT OUTSIDE IN
A THUNDERSTORM...SEEK SHELTER INSDIE A STRONG BUILDING. DO NOT USE
TELEPHONES OR ELECTRICAL APPLIANCES UNTIL THE STORM HAS PASSED.

KEEP TUNED TO NOAA WEATHER RADIO STATION KEC-63 FOR THE LATEST
WEATHER CONDITIONS.

WOODWORTH
Special weather statement, Apr 12, 10:34 PM EDT, 10 minutes before
MIZ047-049>053-055>060-062-130600-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE FLINT  MI
1035 PM EDT TUE APR 12 1994

...STRONG THUNDERSTORMS IN SHIAWASSEE COUNTY...

A SEVERE WATCH IS IN EFFECT UNTIL 300 AM EDT FOR ALL OF EAST CENTRAL
LOWER MICHIGAN.  THIS INCLUDES THE COMMUNITIES OF BAY CITY...SAGINAW...
MIDLAND...FLINT...OWOSSO...LAPEER...SANDUSKY...BAD AXE AND CARO.

AT 1030 PM RADAR INDICATED A STRONG THUNDERSTORM NEAR BENNINGTON...38
MILES WEST SOUTHWEST OF FLINT.  THIS STORM IS MOVING TOWARD THE NORTHEAST
AT 40 MPH AND WILL PASS OVER OWOSSO...24 WEST SOUTHWEST OF FLINT...BY
1045 PM.

IF THREATENING WEATHER APPROACHES OR A WARNING IS ISSUED MOVE TO A
SAFE PLACE...PREFERABLY $INSIDE A STRONG BUILDING ON THE LOWEST FLOOR.

LRT

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 12, 11:14 PM EDTSevere Thunderstorm WarningDTXSaginaw, Shiawassee31 min
Apr 12, 11:39 PM EDTSevere Thunderstorm WarningDTXBay, Tuscola36 min
Apr 13, 12:08 AM EDTSevere Thunderstorm WarningDTXHuron37 min

Nearby

Severe Thunderstorm Warnings in Michigan, 1994Every severe thunderstorm warning in 1994

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.