Alert archive / Michigan / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 29, NWS Grand Rapids, MI

August 16, 1995Allegan County, Michigan

NWS Grand Rapids, MI issued this severe thunderstorm warning at Aug 16, 1995, 2:04 PM EDT for Allegan County, Michigan. It was in force for 41 min.

The area

The counties it named.

The facts

Issued
Aug 16, 1995, 2:04 PM EDT (18:04 UTC)
Expired
Aug 16, 1995, 2:45 PM EDT
In force
41 min
Issued by
NWS Grand Rapids, MI
Area
Whole counties

County Allegan County, MI

The nearest sounding before it

Detroit, MI (KDTX), launched 12:00Z, 6.1 hours before the alert went out and 204 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 1995-08-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 739 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 1995-08-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 30 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
739 J/kg
Mixed-layer CIN
-68 J/kg
Mixed-layer LCL
809 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
30 m²/s²
0-3 km storm-relative helicity
65 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KGRR 161804 RRA
SVRGRR
MIC005-161845-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING 
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
204 PM EDT WED AUG 16 1995

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
AND SPECIAL MARINE WARNING EFFECTIVE UNTIL 245 PM EDT FOR 
PEOPLE IN THE FOLLOWING COUNTY

   IN THE SOUTHWEST PART OF LOWER MICHIGAN
      ALLEGAN

...THIS WARNING ALSO INCLUDES THE ADJACENT COASTAL WATERS FOR THE
COUNTY JUST MENTIONED

AT 200 PM EDT... WEATHER RADAR SHOWED A SEVERE THUNDERSTORM OVER
ALLEGAN COUNTY... ABOUT 10 MILES WEST OF ALLEGAN... 30 MILES
SOUTHWEST OF GRAND RAPIDS. THE STORM WAS MOVING TO THE EAST
NORTHEAST AT 15 MPH AND WILL REACH WAYLAND BY 230 PM... THEN MOVE
TO MIDDLEVILLE BY 245 PM EDT. THIS STORM MAY PRODUCE LARGE HAIL...
DAMAGING WINDS... AND TORENTIAL RAINFALL.

IF YOU ARE CAUGHT OUTSIDE...FIND SHELTER FROM THE WEATHER IN A
STRONG BUILDING.  IF INDOORS...STAY INSIDE AWAY FROM WINDOWS UNTIL
THE STORM HAS PASSED.


MJK

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, Aug 16, 8:04 AM EDT, 6 hours before
MIZ056-057-161330-
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
804 AM EDT WED AUG 16 1995

...STRONG THUNDERSTORMS OVER OTTAWA COUNTY...

AT 800 AM EDT... WEATHER RADAR SHOWED STRONG THUNDERSTORMS OVER
NORTHERN OTTAWA COUNTY NEAR COOPERSVILLE...20 MILES NORTHWEST OF
GRAND RAPIDS. THE STORMS WERE MOVING TO THE NORTHEAST AT 20 MPH...
AND WILL REACH SPARTA BY 830 AM... AND CEDAR SPRINGS BY 900 AM.

THESE STORMS ARE CAPABLE OF HEAVY RAINFALL... SMALL HAIL... AND WIND
GUSTS TO 40 MPH. STAY INDOORS AS THEY MOVE THROUGH THE AREA TO
PROTECT YOURSELF FROM DEADLY CLOUD TO GROUND LIGHTNING.
MJK
Special weather statement, Aug 16, 1:45 PM EDT, 19 minutes before
MIZ050-515-161900-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE  MUSKEGON MI
145 PM EDT WED AUG 16 1995

...HEAVY THUNDERSTORM MOVING THROUGH MUSKEGON COUNTY...

AT 145 PM EDT WEATHER RADAR INDICATED A HEAVY THUNDERSTORM MOVING SLOWLY
THROUGH THE WEST CENTRAL LOWER MICHIGAN COUNTY OF MUSKEGON.  THE STORM
WILL PRODUCE DEADLY LIGHTNING...CONTINUOUS HEAVY THUNDER AND LOCALLY
HEAVY RAINFALLS.  RADAR NOTED NO SEVERE WEATHER ACCOMPANYING THE STORM.

THE STORM WAS MOVING NORTHEAST SLOWLY AT 10 MPH.  WINDS ASSOCIATED WITH
THE STORM WAS UNDER 15 MPH.  NO HAIL WAS INDICATED.
Special weather statement, Aug 16, 1:53 PM EDT, 11 minutes before
MIZ050-515-161900-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE  MUSKEGON MI
145 PM EDT WED AUG 16 1995

...HEAVY THUNDERSTORM MOVING THROUGH MUSKEGON COUNTY...

AT 145 PM EDT WEATHER RADAR INDICATED A HEAVY THUNDERSTORM MOVING SLOWLY
THROUGH THE WEST CENTRAL LOWER MICHIGAN COUNTY OF MUSKEGON.  THE STORM
WILL PRODUCE DEADLY LIGHTNING...CONTINUOUS HEAVY THUNDER AND LOCALLY
HEAVY RAINFALLS.  RADAR NOTED NO SEVERE WEATHER ACCOMPANYING THE STORM.

THE STORM WAS MOVING NORTHEAST SLOWLY AT 10 MPH.  WINDS ASSOCIATED WITH
THE STORM WAS UNDER 15 MPH.  NO HAIL WAS INDICATED.

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 16, 3:12 PM EDTSevere Thunderstorm WarningGRRVan Buren33 min

Nearby

Severe Thunderstorm Warnings in Michigan, 1995Every severe thunderstorm warning in 1995

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.