Alert archive / Michigan / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 2, NWS Gaylord, MI

April 15, 1994Osceola County, Michigan

NWS Gaylord, MI issued this severe thunderstorm warning at Apr 15, 1994, 9:07 AM EDT for Osceola County, Michigan. It was in force for 53 min.

The area

The counties it named.

The facts

Issued
Apr 15, 1994, 9:07 AM EDT (13:07 UTC)
Expired
Apr 15, 1994, 10:00 AM EDT
In force
53 min
Issued by
NWS Gaylord, MI
Area
Whole counties

County Osceola County, MI

The nearest sounding before it

Detroit, MI (KFNT), launched 12:00Z, 1.1 hours before the alert went out and 208 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 KMKG 151314
SVRMKG
MIC133-151400-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MUSKEGON MI
907 AM EDT FRI APR 15 1994
 
THE NATIONAL WEATHER SERVICE IN MUSKEGON MI  HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1000 AM EDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN WEST CENTRAL LOWER MICHIGAN
 
   ...EASTERN OSCEOLA COUNTY
 
AT 902 AM EDT... WEATHER RADAR INDICATED A SEVERE THUNDERSTORM IN
EASTERN OSCEOLA COUNTY NEAR THE TOWN OF AVONDALE...20 MILES SOUTHEAST OF
CADILLAC. THIS STORM WAS MOVING NORTHEAST AT 30 MILES AN HOUR AND WILL
TRAVEL JUST EAST OF MARION... IN EXTREME NORTHEAST OSCEOLA COUNTY... BY
920 AM. BRIEF HEAVY DOWNPOURS ALONG WITH HAIL TO MARBLE SIZE CAN BE
ANTICIPATED WITH THE PASSAGE OF THIS STORM.
 
 
IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A
STRONG BUILDING.  DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN...
AND DEADLY LIGHTNING ARE ALL POSSIBLE IN SE6VERE THUNDERSTORMS.
STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.
 
FELVER

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, 6:25 AM EDT, 2 hours 42 minutes before
MIZ016>019-023-024-029-030-036-042-509-514-151125-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ALPENA MI
624 AM EDT FRI APR 15 1994

...SCATTERED THUNDERSTORMS WERE MOVING ACROSS NORTHERN LOWER MICHIGAN...

AT 615 AM EDT...NATIONAL WEATHER SERVICE RADAR INDICATED A BAND OF RAIN
...WITH EMBEDDED THUNDERSTORMS...EXTENDING FROM PELLSTON TO OSCODA.
THIS BAND WAS MOVING TO THE NORTHEAST AT 45 MPH. EMBEDDED THUNDERSTORMS
EXTENDED FROM PELLSTON TO WOLVERINE. THE THUNDERSTORMS WILL REACH
FROM MACKINAW CITY TO CHEBOYGAN BY 635 AM. FREQUENT LIGHTNING AND
BRIEFLY HEAVY RAINS WILL ACCOMPANY THESE STORMS.

HEAVY RAINS AND A BRIEF THUNDERSTORM WILL BE POSSIBLE ANYWHERE IN
NORTHERN LOWER MICHIGAN THROUGH DAYBREAK AS THIS BAND MOVES THROUGH.

REMEMBER...ALL THUNDERSTORMS CAN AND DO PRODUCE DEADLY LIGHTNING. IF
THUNDERSTORMS APPROACH YOUR AREA TAKE SHELTER AND AVOID USING
ELECTRICAL APPLIANCES UNTIL THE STORM HAS PASSED. MOTORISTS SHOULD
ALSO BE ALERT FOR REDUCED VISIBILITIES IN AREAS OF HEAVY RAIN.

NORCROSS
Special weather statement, Apr 15, 7:17 AM EDT, 1 hour 50 minutes before
MIZ016>019-023-024-029-030-036-042-509-514-151225-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ALPENA MI
716 AM EDT FRI APR 15 1994

...SCATTERED THUNDERSTORMS WERE MOVING ACROSS NORTHWEST LOWER
MICHIGAN...

AT 710 AM EDT...NATIONAL WEATHER SERVICE RADAR INDICATED A LINE OF
THUNDERSTORMS...EMBEDDED WITHIN A BAND OF RAIN...ENTERING WESTERN
CHEBOYGAN COUNTY. THIS LINE EXTENDED FROM ALANSON TO WOLVERINE AT 710
AM AND WAS MOVING TO THE NORTHEAST AT 45 MPH. THESE THUNDERSTORMS WILL
REACH THE COMMUNITIES OF ALOHA AND MULLET LAKE BY 720 AM AND THE CITY
OF CHEBOYGAN BY 730 AM. FREQUENT LIGHTNING...BRIEFLY HEAVY RAINS...AND
GUSTY WINDS WILL ACCOMPANY THESE STORMS.

ACROSS THE REST OF NORTHERN LOWER MICHIGAN...THE BAND OF RAIN WILL BE
MOVING OUT OVER LAKE HURON BY 730 AM. A BRIEF THUNDERSTORM WILL STILL
BE POSSIBLE ANYWHERE IN NORTHERN LOWER MICHIGAN THROUGH 900 AM.
REMEMBER...ALL THUNDERSTORMS CAN AND DO PRODUCE DEADLY LIGHTNING. IF
THUNDERSTORMS APPROACH YOUR AREA TAKE SHELTER AND AVOID USING
ELECTRICAL APPLIANCES UNTIL THE STORM HAS PASSED. MOTORISTS SHOULD
ALSO BE ALERT FOR REDUCED VISIBILITIES IN AREAS OF HEAVY RAIN.

NORCROSS
Special weather statement, Apr 15, 7:30 AM EDT, 1 hour 37 minutes before
MIZ007-008-015-151330-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAULT STE MARIE MI
730 AM EDT FRI APR 15 1994

...THUNDERSTORMS IN EAST UPPER MICHIGAN...

AN AREA OF THUNDERSTORMS HAD MOVED INTO CENTRAL PORTIONS OF EAST
UPPER MICHIGAN AT 730 AM.  THESE STORMS EXTENDED FROM ST MARTINS
BAY NORTHWEST TO TROUT LAKE AND SOO JUNCTION.  THE STORMS WERE
MOVING TO THE NORTHEAST AT 40 MILES AN HOUR AND WILL BE NEAR
DETOUR VILLAGE...THE LOWER ST MARYS RIVER SYSTEM AND SAULT STE
MARIE AT 830 AM.  PERSONS IN THE KINROSS-RUDYARD AREA...STRONGS...
BRIMLEY... DAFTER...PICKFORD AND STALWART WILL ALL EXPERIENCE SOME
THUNDERSTORM ACTIVITY THIS MORNING.

THESE STORMS CONTAIN DANGEROUS LIGHTNING...SMALL HAIL AND MAY PRODUCE
WIND GUSTS TO 30 MILES AN HOUR.

IF YOU HEAR THUNDER...IT WOULD BE BEST TO REMAIN INDOORS OR WITHIN
YOUR VEHICLE UNTIL THESE STORMS PASS.  IF CAUGHT OUT OF DOORS...
SEEK A SAFE BUILDING AND PROTECTION FROM LIGHTNING.
Special weather statement, Apr 15, 8:47 AM EDT, 20 minutes before
MIZ022-028-034-035-040-041-151400-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HOUGHTON LAKE MI
846 AM EDT FRI APR 1T 1994

...THUNDERSTORMS WERE RAPIDLY APPROACHING NORTH CENTRAL LOWER
MICHIGAN...

AT 845 AM EDT...WEATHER RADAR INDICATED A LINE OF STRONG
THUNDERSTORMS EXTENDING FROM AROUND GRAND RAPIDS NORTHEAST TO ABOUT
40 MILES NORTHWEST OF HOUGHTON LAKE. THE THUNDERSTORMS WERE MOVING TO
THE NORTHEAST AT 40 MPH AND WILL REACH THE WEST BORDERS OF CLARE AND
ROSCOMMON COUNTIES BY 900 AM. THESE THUNDERSTORMS ARE CAPABLE OF
PRODUCING LOCALLY HEAVY RAIN...DEADLY CLOUD TO GROUND LIGHTNING...
WINDS GUSTS UP TO 45 MPH...AND SMALL HAIL AS THEY MOVE INTO THE
REGION.

WHEN YOU SEE A THUNDERSTORM APPROACHING...MOVE INDOORS AND STAY AWAY
FROM WINDOWS. TO PROTECT YOURSELF FROM LIGHTNING STRIKES...REFRAIN
FROM USING ELECTRICAL APPLIANCES DURING A THUNDERSTORM AND ONLY USE
THE TELEPHONE WHEN IT IS AN EMERGENCY.

HURLEY

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 15, 8:34 AM EDTSevere Thunderstorm WarningAPXMecosta41 min
Apr 15, 9:59 AM EDTSevere Thunderstorm WarningAPXMontmorency31 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.