Alert archive / Michigan / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 13, NWS Grand Rapids, MI

April 15, 1994Ingham County, Michigan

NWS Grand Rapids, MI issued this severe thunderstorm warning at Apr 15, 1994, 10:37 AM EDT for Ingham County, Michigan. It was in force for 38 min.

The area

The counties it named.

The facts

Issued
Apr 15, 1994, 10:37 AM EDT (14:37 UTC)
Expired
Apr 15, 1994, 11:15 AM EDT
In force
38 min
Issued by
NWS Grand Rapids, MI
Area
Whole counties

County Ingham County, MI

The nearest sounding before it

Detroit, MI (KFNT), launched 12:00Z, 2.6 hours before the alert went out and 78 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 1994-04-15Temperature 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 12:00Z on 1994-04-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 102 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1973 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
102 m²/s²
0-3 km storm-relative helicity
77 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.

000 
TTAA00 KLAN 151444 COR
SVRLAN
MIC065-075-151515-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING...CORRECTION
NATIONAL WEATHER SERVICE LANSING MI
1044 AM EDT FRI APR 15 1994

THE NATIONAL WEATHER SERVICE IN LANSING HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1115 AM EDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...

IN SOUTH CENTRAL MICHIGAN

   ...SOUTHEASTERN INGHAM COUNTY...NORTHEASTERN JACKSON COUNTY

AT 1035 AM...WEATHER RADAR SHOWED A POSSIBLE SEVERE THUNDERSTORM ABOUT 5
MILES NORTH OF JACKSON. THIS STORM IS MOVING TO THE NORTHEAST AT NEARLY
40 MILES AN HOUR. IT WILL PASS NEAR PLEASANT LAKE IN JACKSON COUNTY BY
1040 AM...AND FITCHBURG IN INGHAM COUNTY BY 1050 AM. THIS STORM IS
CAPABLE OF PRODUCING HAIL UP TO ONE INCH IN DIAMETER.

IF THIS STORM THREATENS YOUR AREA...MOVE TO THE INTERIOR OF A STURDY
BUILDING IMMEDIATELY.  DO NOT USE ELECTRICAL APPLIANCES OR TELEPHONES
EXCEPT IN EMERGENCIES.

STAY TUNED TO NOAA WEATHER RADIO FOR FURTHER STATEMENTS AND WARNINGS.

DESROSIERS

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 15, 7:38 AM EDT, 2 hours 59 minutes before
MIZ051-056-057-058-064-065-071-072-501-151230-

SPECIAL WEATHER STATEMENT
FOR SOUTHWEST LOWER MICHIGAN
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
737 AM EDT FRI APR 15 1994

...THUNDERSTORMS CONTINUED IN PART OF SOUTHWEST LOWER MICHIGAN...

AT 735 AM EDT... WEATHER RADAR INDICATED STRONG THUNDERSTORMS MOVING
ON SHORE NEAR SOUTH HAVEN... 35 MILES NORTHWEST OF KALAMAZOO AND NEAR
NUNICA AND COOPERSVILLE... 15 MILES NORTHWEST OF GRAND RAPIDS. THESE
STORMS MAY CONTAIN SMALL HAIL AND GUSTY WINDS OF 45 MPH. THE STORMS
WERE MOVING TOWARD THE NORTHEAST AT 25 MPH AND WILL REACH THE
COMMUNITIES OF PULLMAN BY 800 AM AND ALLEGAN BY 815 AM. THE STORM NEAR
COOPERSVILLE WILL REACH THE COMMUNITIES OF SPARTA BY 800 AM AND CEDAR
SPRINGS BY 830 AM.

THESE STORMS CONTAIN GUSTY WINDS AND DANGEROUS LIGHTNING. IF YOU ARE IN
THE PATH OF THESE STORMS YOU SHOULD MOVE INSIDE TO AVOID THE DANGERS OF
LIGHTNING.
Special weather statement, Apr 15, 8:29 AM EDT, 2 hours 8 minutes before
MIZ073-080-131315-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LANSING MI
829 AM EDT FRI APR 15 1994

...THUNDERSTORMS DEVELOPING IN THE BATTLE CREEK AREA...

WEATHER RADAR AT 820 AM EDT INDICATED THAT THUNDERSTORMS WERE
DEVELOPING IN THE BATTLE CREEK AND COLDWATER AREAS. THE STORMS WERE
LOCATED FROM ABOUT 10 MILES NORTHWEST OF BATTLE CREEK NEAR BEDFORD
SOUTH TO NEAR ATHENS IN SOUTHWEST CALHOUN AND BRONSON IN WESTERN
BRANCH COUNTY. THE STORMS WERE MOVING FROM THE SOUTHWEST AT 40 MILES
AN HOUR AND WILL AFFECT BATTLE CREEK BY 840 AM AND COLDWATER BY
850 AM EDT.

THESE STORMS MAY CONTAIN STRONG WINDS UP TO NEAR 50 MILES AN HOUR AND
SMALL HAIL OF 1/2 AN INCH.

WHEN THUNDERSTORMS ARE OCCURRING...MOVE INDOORS TO PROTECT YOURSELF
FROM THE DANGERS OF LIGHTNING. DO NOT USE TELEPHONES OR ELECTRICAL
APPLIANCES EXCEPT IN EMERGENCIES.

STAY TUNED TO NATIONAL WEATHER SERVICE WEATHER RADIO FOR FURTHER
UPDATES AND STATEMENTS.

PL
Special weather statement, Apr 15, 8:44 AM EDT, 1 hour 53 minutes before
MIZ073-080-131315-

SPECIAL WEATHER STATEMENT...UPDATED...
NATIONAL WEATHER SERVICE LANSING MI
845 AM EDT FRI APR 15 1994

...THUNDERSTORMS DEVELOPING IN THE BATTLE CREEK AREA...

WEATHER RADAR AT 820 AM EDT INDICATED THAT THUNDERSTORMS WERE
DEVELOPING IN THE BATTLE CREEK AREA. THE STORMS WERE LOCATED FROM
ABOUT 10 MILES NORTHWEST OF BATTLE CREEK NEAR BEDFORD AND WEST OF
BRONSON IN WESTERN BRANCH COUNTY. THE STORMS WERE MOVING FROM THE
SOUTHWEST AT 40 MILES AN HOUR AND WILL AFFECT BATTLE CREEK BETWEEN
845 AM AND 900 AM EDT.

THESE STORMS MAY CONTAIN STRONG WINDS UP TO NEAR 50 MILES AN HOUR AND
SMALL HAIL OF UP TO 1/2 AN INCH.

WHEN THUNDERSTORMS ARE OCCURRING...MOVE INDOORS TO PROTECT YOURSELF
FROM THE DANGERS OF LIGHTNING. DO NOT USE TELEPHONES OR ELECTRICAL
APPLIANCES EXCEPT IN EMERGENCIES.

STAY TUNED TO NATIONAL WEATHER SERVICE WEATHER RADIO FOR FURTHER
UPDATES AND STATEMENTS.

PL
Special weather statement, Apr 15, 9:24 AM EDT, 1 hour 13 minutes before
MIZ046-052-059-066-067-073-074-080-081-131415-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LANSING MI
925 AM EDT FRI APR 15 1994

...THUNDERSTORMS HEADING TOWARD SOUTH CENTRAL LOWER MICHIGAN...

AT 920...WEATHER RADAR SHOWED A LINE OF THUNDERSTORMS FROM JUST WEST OF
HOUGHTON LAKE TO GRAND RAPIDS TO JUST WEST OF BATTLE CREEK. INDIVIDUAL
THUNDERSTORMS WERE MOVING TO THE NORTHEAST AT ABOUT 30 MILES AN
HOUR...WHILE THE LINE MOVED EAST AT 20 MILES AN HOUR.  PEOPLE IN THE
COMMUNITIES OF WEIDMAN IN ISABELLA COUNTY...BELLVUE IN EATON COUNTY AND
BATTLE CREEK SHOULD EXPECT THUNDERSTORMS TO MOVE OVERHEAD BY 945 AM.

THESE STORMS MAY CONTAIN STRONG WINDS TO NEAR 50 MILES AN HOUR AND
SMALL HAIL OF UP TO 1/2 AN INCH.

WHEN THUNDERSTORMS ARE OCCURRING...MOVE INDOORS TO PROTECT YOURSELF
FROM THE DANGERS OF LIGHTNING. DO NOT USE TELEPHONES OR ELECTRICAL
APPLIANCES EXCEPT IN EMERGENCIES.

STAY TUNED TO NATIONAL WEATHER SERVICE RADION FOR FURTHER UPDATES AND
STATEMENTS.

DESROSIERS
Special weather statement, Apr 15, 10:04 AM EDT, 33 minutes before
MIZ051-056-057-058-064-065-071-072-501-151430-

SPECIAL WEATHER STATEMENT
FOR SOUTHWEST LOWER MICHIGAN
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
1000 AM EDT FRI APR 15 1994

...THUNDERSTORMS CONTINUED OVER SOUTHWEST LOWER MICHIGAN...

AT 1000 AM EDT... THUNDERSTORMS AND SHOWERS CONTINUED OVER ALL OF
SOUTHWEST LOWER MICHIGAN. THE STRONGEST THUNDERSTORMS EXTENDED FROM
KEELER... 35 MILES SOUTHWEST OF KALAMAZOO TO CROTON... 30 MILES NORTH
OF GRAND RAPIDS. THE THUNDERSTORMS WERE MOVING EAST AT 25 MPH. THEY WILL
REACH MARCELLUS AND SIX LAKES BY 1100 AM. THE THUNDERSTORMS WERE PART OF
A LARGE PRECIPITATION AREA THAT COVERED ALL OF SOUTHWEST LOWER MICHIGAN.
THE PRECIPITATION AREA WAS MOVING EAST AT 25 MPH. PRECIPITATION WILL BE
ENDING ALONG THE LAKE MICHIGAN SHORELINE... FROM SOUTH HAVEN TO GRAND
HAVEN BY 1020 AM AND ENDING FROM BLOOMINGDALE TO SPARTA BY 1100 AM.

WHEN THUNDERSTORMS ARE ABOUT... PROTECT YOURSELF FROM LIGHTNING BY
GETTING INSI"DE A BUILDING.
COOLEY
Special weather statement, Apr 15, 10:32 AM EDT, 5 minutes before
MIZ051-056-057-058-064-065-071-072-501-151530-

SPECIAL WEATHER STATEMENT
FOR SOUTHWEST LOWER MICHIGAN
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
1030 AM EDT FRI APR 15 1994

...THUNDERSTORMS CONTINUE OVER SOUTHWEST LOWER MICHIGAN...

AT 1030 AM EDT... THUNDERSTORMS AND SHOWERS OVER SOUTHWEST LOWER MICHIGAN
WERE MOVING EAST... INTO EASTERN LOWER MICHIGAN. THE STRONGEST
THUNDERSTORMS EXTENDED FROM KALAMAZOO TO CALEDONIA... 15 MILES SOUTHEAST
OF GRAND RAPIDS. THE THUNDERSTORMS WERE MOVING EAST AT 25 MPH. THEY WILL
REACH ASSYRIA AND IONIA BY 1130 AM. THE THUNDERSTORMS WERE PART OF A
LARGE AREA OF PRECIPITATION THAT COVERED MUCH OF SOUTHWEST LOWER MICHIGAN.
THE REAR EDGE OF THE PRECIPITATION EXTENDED FROM KEELER TO GRAND JUNCTION
...HUDSONVILLE AND WHITE CLOUD. THE PRECIPITATION AREA WAS MOVING EAST AT
25 MPH. PRECIPITATION WILL BE ENDING FROM SCHOOLCRAFT TO LOWELL AND SIX
LAKES BY 1130 AM AND FROM STURGIS... BATTLE CREEK... IONIA AND VESTABURG
BY 1230 PM.
.
WHEN THUNDERSTORMS ARE IN YOUR COMMUNITY... PROTECT YOURSELF BY GETTING
INSIDE A SHELTER... SUCH AS A BUILDING OR AN AUTOMOBILE. DO NOT MAKE
YOURSELF THE HIGHEST POINT ON THE HORIZON... YOU COULD BECOME A
LIGHTNING ROD.
COOLEY

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 15, 7:57 AM EDTSevere Thunderstorm WarningGRRAllegan, Ottawa30 min
Apr 15, 8:29 AM EDTSevere Thunderstorm WarningGRRMontcalm31 min
Apr 15, 8:54 AM EDTSevere Thunderstorm WarningGRRKent49 min
Apr 15, 9:01 AM EDTSevere Thunderstorm WarningGRRMontcalm44 min
Apr 15, 9:46 AM EDTSevere Thunderstorm WarningGRRCalhoun, Eaton59 min
Apr 15, 9:58 AM EDTSevere Thunderstorm WarningGRRIngham47 min
Apr 15, 10:04 AM EDTSevere Thunderstorm WarningGRRGratiot41 min
Apr 15, 10:37 AM EDTSevere Thunderstorm WarningGRRJackson78 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.