Alert archive / Michigan / Severe Thunderstorm Warnings in 1991

Severe Thunderstorm Warning 1, NWS Gaylord, MI

March 27, 1991Benzie County, Grand Traverse County, Manistee County, Michigan

NWS Gaylord, MI issued this severe thunderstorm warning at Mar 27, 1991, 4:53 PM EST for Benzie County, Grand Traverse County, Manistee County, Michigan. It was in force for 67 min. 3 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Mar 27, 1991, 4:53 PM EST (21:53 UTC)
Expired
Mar 27, 1991, 6:00 PM EST
In force
67 min
Issued by
NWS Gaylord, MI
Area
Whole counties

Counties Benzie County, MI, Grand Traverse County, MI, Manistee County, MI

What was reported inside it

TimeReportWhereRemark
Mar 27, 5:15 PM ESTHail 0.75Grand Traverse, MI
Mar 27, 5:50 PM ESTThunderstorm Wind 56Benzie, MI
Mar 27, 5:57 PM ESTThunderstorm Wind 0Benzie, MI

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 9.9 hours before the alert went out and 167 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, Green Bay/Straub, WI at 12:00Z on 1991-03-27Temperature 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, Green Bay/Straub, WI at 12:00Z on 1991-03-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 59 square meters per square second.1939587897Sfc1 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
1516 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
59 m²/s²
0-3 km storm-relative helicity
-11 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, Mar 27, 11:25 AM EST, 5 hours 28 minutes before
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Special weather statement, Mar 27, 1:04 PM EST, 3 hours 49 minutes before
MIZ065-064-066-048-067-068-271900-

SPECIAL WEATHER STATEMENT AND SHORT-RANGE WEATHER FORECAST
NATIONAL WEATHER SERVICE ALPENA MI
105 PM EST WED MAR 27 1991

...SHOWERS HAVE ENDED OVER NORTHEAST LOWER MICHIGAN...

AT 100 PM...SHOWERS AND THUNDERSTORMS THAT MOVED ACROSS
MOST OF NORTHEAST LOWER MICHIGAN THIS MORNING...HAD MOVED TO THE
NORTHEAST OR DISSIPATED. ONLY A FEW SHOWERS REMAINED OVER CENTRAL
AND NORTH-CENTRAL LAKE HURON.

SOME AREAS OF DENSE FOG REMAINED OVER NORTHEAST LOWER MICHIGAN...
REDUCING VISIBILITIES TO LESS THAN ONE MILE. TEMPERATURES WERE IN
THE LOWER TO MIDDLE 50S...WITH SOUTHEAST TO SOUTH WINDS AT 10 TO 20
MILES AN HOUR.

ALTHOUGH SHOWERS AND THUNDERSTORMS HAVE TEMPORARILY ENDED...DEVELOPING
SHOWERS AND THUNDERSTORMS OVER SOUTHWEST LOWER MICHIGAN AND SOUTHERN
LAKE MICHIGAN...WILL BE MOVING INTO NORTHEAST LOWER MICHIGAN AFTER
2 PM.  SOME OF THESE THUNDERSTORMS MAY BE SEVERE. AREAS OF DENSE FOG
WILL PERSIST EARLY THIS AFTERNOON...MAINLY NORTH OF ALPENA. TEMPERATURES
WILL BE RISING TO AN AFTERNOON HIGH NEAR 60 DEGREES...AS SOUTHEAST TO
SOUTH WINDS INCREASE TO 15 TO 25 MILES AN HOUR AFTER 3 PM.

IF YOU ARE IN NORTHEAST LOWER MICHIGAN TODAY...BE PREPARED FOR
TH1UNDERSTORMS AND AREAS OF DENSE FOG.

CAMPBELL
Special weather statement, Mar 27, 4:26 PM EST, 27 minutes before
MIZ065-064-066-048-067-068-272230-

SPECIAL WEATHER STATEMENT AND SHORT-RANGE WEATHER FORECAST
NATIONAL WEATHER SERVICE ALPENA MI
425 PM EST WED MAR 27 1991

...A TORNADO WATCH IS IN EFFECT FOR MUCH OF NORTHEAST LOWER MICHIGAN
UNTIL MIDNIGHT...

A TORNADO WATCH HAS BEEN ISSUED FOR MUCH OF LOWER MICHIGAN THIS
AFTERNOON.  IN NORTHEAST LOWER MICHIGAN...THE FOLLOWING COUNTIES
ARE INCLUDED IN THE WATCH: MONTMORENCY...ALPENA...OSCODA...ALCONA...
AND IOSCO.

AT 420 PM...NATIONAL WEATHER SERVICE RADAR INDICATED SHOWERS AND
THUNDERSTORMS DEVELOPING OVER NORTH-CENTRAL LOWER MICHIGAN...AROUND
40 MILES NORTH OF HOUGHTON LAKE...AND OVER EXTREME NORTHWEST LOWER
MICHIGAN...NORTH OF TRAVERSE CITY.

THESE SHOWERS AND THUNDERSTORMS WERE MOVING RAPIDLY TO THE NORTHEAST
AT AROUND 50 MILES AN HOUR...AND WILL BE MOVING OVER LEWISTON AND
VIENNA BY 445 PM.

SHOWERS AND THUNDERSTORMS WILL BECOME MORE NUMEROUS OVER MOST OF
NORTHEAST LOWER MICHIGAN AS THE LATE AFTERNOON AND EARLY EVENING
PROGRESSES.

IF YOU ARE IN OR NEAR THE WATCH AREA...BE PREPARED FOR THUNDERSTORMS
...SOME POSSIBLY SEVERE...AND THE POTENTIAL FOR TORNADOES.

CAMPBELL
Special weather statement, Mar 27, 4:38 PM EST, 15 minutes before
MIC035-039-051-129-137-143-272245-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HOUGHTON LAKE MI
438 PM EST WED MAR 27 1991

...TORNADO WATCH IN EFFECT FOR NORTH CENTRAL LOWER MICHIGAN UNTIL
MIDNIGHT...

A TORNADO WATCH IS IN EFFECT FOR MOST OF THE LOWER PENINSULA OF
MICHIGAN...INCLUDING ALL OF NORTH CENTRAL LOWER MICHIGAN...UNTIL
MIDNIGHT TONIGHT. COUNTIES INCLUDED IN NORTH CENTRAL LOWER MICHIGAN
ARE CLARE...GLADWIN...ROSCOMMON...OGEMAW...CRAWFORD AND OTSEGO.

AT 430 PM EST RADAR INDICATED A RAPIDLY DEVELOPING AREA OF
THUNDERSTORMS...SOME POSSIBLY PRODUCING STRONG DAMAGING WINDS...
HEAVY RAIN AND FREQUENT DANGEROUS LIGHTNING. THESE STORMS WERE MOVING
TO THE NORTHEAST AT ABOUT 45 MPH. PERSONS IN NORTH CENTRAL LOWER
MICHIGAN ARE STRONGLY URGED TO KEEP AN EYE ON WEATHER CONDITIONS
AND BE PREPARED TO MOVE TO A PLACE OF SAFETY SHOULD SEVERE WEATHER
DEVELOP FROM THESE STORMS AS THEY PASS OVERHEAD.

REMEMBER...A TORNADO WATCH MEANS THAT CONDITIONS ARE RIPE FOR THE
DEVELOPMENT OF SEVERE THUNDERSTORMS AND TORNADOS. THESE STORMS ARE
DEVELOPING AND MOVING RAPIDLY AND LITTLE OR NO ADVANCE WARNING MAY
OCCUR BEFORE A TORNADO FORMS.

AGAIN...IF YOU ARE IN THE WATCH AREA BE PREPARED TO MOVE TO A PLACE
OF SAFETY IMMEDIATELY SHOULD SEVERE WEATHER THREATEN.

KEITH

NNNN

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 27, 5:29 PM ESTSevere Thunderstorm WarningAPXMuskegon, Newaygo, Oceana61 min
Mar 27, 6:08 PM ESTTornado WarningAPXNewaygo67 min
Mar 27, 6:40 PM ESTTornado WarningAPXMissaukee, Osceola, Wexford65 min

Nearby

Severe Thunderstorm Warnings in Michigan, 1991Every severe thunderstorm warning in 1991

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.