Alert archive / Michigan / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 5, NWS Detroit, MI

July 8, 1990Crawford County, Michigan

NWS Detroit, MI issued this severe thunderstorm warning at Jul 8, 1990, 8:45 PM EDT for Crawford County, Michigan. It was in force for 60 min.

The area

The counties it named.

The facts

Issued: Jul 8, 1990, 8:45 PM EDT (00:45 UTC)
Expired: Jul 8, 1990, 9:45 PM EDT
In force: 60 min
Issued by: NWS Detroit, MI
Area: Whole counties

County Crawford County, MI

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Sault Ste Marie, MI (KSSM), launched 00:00Z, 0.8 hours before the alert went out and 200 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 585 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: 28 m²/s²
0-3 km storm-relative helicity: 88 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, Jul 8, 7:13 PM EDT, 1 hour 32 minutes before

MIZ001>068-090015-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ANN ARBOR MI
713 PM EDT SUN JUL 8 1990

...SEVERE THUNDERSTORM WATCH ISSUED FOR MUCH OF LOWER MICHIGAN...

SEVERE THUNDERSTORM WATCH NUMBER 605... ISSUED FOR MOST OF THE NORTH
THREE QUARTERS OF LOWER MICHIGAN... IS IN EFFECT UNTIL 12 MIDNIGHT EDT
TONIGHT.

THE WATCH IS IN EFFECT FOR THAT PART OF LOWER MICHIGAN WHICH IS
MAINLY...

           NORTH OF A LINE THROUGH HOLLAND... LANSING... AND PONTIAC

       AND SOUTH OF A LINE THROUGH CHARLEVOIX... AND PRESQUE ISLE.

IF YOU ARE IN OR NEAR THIS WATCH AREA... PLEASE STAY ALERT FOR THE
POSSIBILITY OF SEVERE THUNDERSTORMS TONIGHT.

MRK

Special weather statement, Jul 8, 7:23 PM EDT, 1 hour 22 minutes before

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Special weather statement, Jul 8, 7:32 PM EDT, 1 hour 13 minutes before

MIZ026-031>034-036>039-042-090400-

SPECIAL WEATHER STATEMENT... CORRECTED
NATIONAL WEATHER SERVICE FLINT MI
720 PM EDT SUN JUL 8 1990

  ...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL MIDNIGHT EDT...

AT 630 PM EDT... AN AREA OF SCATTERED THUNDERSTORMS WAS INDICATED
BY RADAR FROM CENTRAL LAKE HURON... ACROSS THE THUMB... TO
SOUTHWEST OF HOUGHTON LAKE... WITH THE STRONGEST STORMS OVER THE
THUMB.

MOVEMENT WAS EAST AROUND 45 MPH.

LARGE HAIL... DANGEROUS LIGHTNING AND DAMAGING THUNDERSTORM WINDS
ARE POSSIBLE AS THESE STORMS PASS.  PEOPLE IN EAST CENTRAL MICHIGAN
SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS AND BE
PREPARED TO MOVE TO A SAFE PLACE IF THREATENING WEATHER APPROACHES.

STJ

Special weather statement, Jul 8, 8:17 PM EDT, 28 minutes before

MIZ026-031>034-036>039-042-090110-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE FLINT MI
815 PM EDT SUN JUL 8 1990

  ...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL MIDNIGHT EDT...

AT 730 PM EDT... AN AREA OF SCATTERED THUNDERSTORMS CONTINUED TO
BE INDICATED BY RADAR FROM THE THUMB EAST INTO LAKE HURON... FROM
AROUND CASS CITY TO HARBOR BEACH.  CASS CITY IS 35 MILES NORTHEAST
OF SAGINAW.

ANOTHER BAND OF THUNDERSTORMS EXTENDED FROM SAGINAW BAY... WEST
TO NEAR MUSKEGON.

RADAR INDICATED MOVEMENT AS EAST AT NEAR 45 MPH.

LARGE HAIL... DANGEROUS LIGHTNING AND DAMAGING THUNDERSTORM WINDS
ARE POSSIBLE AS THESE STORMS PASS... SOME MAY BECOME SEVERE. PEOPLE
IN LOWER MICHIGAN SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER
AND BE PREPARED TO MOVE TO SAFE SHELTER IF THREATENING WEATHER
APPROACHES.

STJ

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 8, 8:35 PM EDT	Severe Thunderstorm Warning	DTX	Otsego	35 min

Nearby

Severe Thunderstorm Warnings in Michigan, 1990 Every severe thunderstorm warning in 1990

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.