Alert archive / Michigan / Severe Thunderstorm Warnings in 1993
Severe Thunderstorm Warning 21, NWS Detroit, MI
NWS Detroit, MI issued this severe thunderstorm warning at Jul 28, 1993, 4:53 AM EDT for Macomb County, Michigan. It was in force for 37 min.
The area
The counties it named.
The facts
- Issued
- Jul 28, 1993, 4:53 AM EDT (08:53 UTC)
- Expired
- Jul 28, 1993, 5:30 AM EDT
- In force
- 37 min
- Issued by
- NWS Detroit, MI
- Area
- Whole counties
County Macomb County, MI
The nearest sounding before it
Detroit, MI (KFNT), launched 00:00Z, 8.9 hours before the alert went out and 43 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.
- Mixed-layer CAPE
- 175 J/kg
- Mixed-layer CIN
- -117 J/kg
- Mixed-layer LCL
- 1350 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 23 m²/s²
- 0-3 km storm-relative helicity
- 56 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.6
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KDTW 280902 COR
SVRDTW
MIC099-280930-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING...CORRECTED...
NATIONAL WEATHER SERVICE DETROIT MI
453 AM EDT WED JUL 28 1993
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
WARNING EFFECTIVE UNTIL 530 AM EDT FOR PEOPLE IN THE FOLLOWING
COUNTY
IN THE SOUTHEAST PART OF LOWER MICHIGAN
MACOMB
AT 450 AM EDT...WEATHER SERVICE RADAR INDICATED A SEVERE THUNDER-
STORM OVER MOUNT CLEMENS...21 MILES NORTH NORTHEAST OF DOWNTOWN
DETROIT. THE STORM WAS MOVING EAST AT 40 MILES AN HOUR AND WILL BE OUT
OVER LAKE SAINT CLAIR BY 510 AM.
WHEN THUNDERSTORMS ARE OCCURRING...PEOPLE SHOULD MOVE INSIDE A
STRONG BUILDING. DO NOT STAND NEAR WIN8DOWS. DO NOT USE TELEPHONES
OR ELECTRICAL APPLIANCES UNTIL THE STORM HAS PASSED. MOTORISTS
SHOULD AVOID LOW WATER CROSSINGS.
NASHWhat 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 28, 3:42 AM EDT, 1 hour 11 minutes before
MIZ019-021-027-028-280942- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DETROIT MI 342 AM EDT WED JUL 28 1993 ...THUNDERSTORMS WERE MOVING INTO SOUTHEAST LOWER MICHIGAN... AT 337 AM EDT...WEATHER SERVICE RADAR INDICATED THAT A LINE OF SHOWERS AND THUNDERSTORMS EXTENDED FROM 20 MILES WEST OF BAY CITY SOUTHEASTWARD THROUGH NORTHEAST LIVINGSTON COUNTY CONTINUING DOWN TO PONTIAC MICHIGAN IN OAKLAND COUNTY. THE STRONGEST STORM WAS LOCATED NEAR WATERFORD IN OAKLAND COUNTY...ABOUT 31 MILES NORTHWEST OF DOWNTOWN DETROIT. THE STORMS WERE MOVING TO THE EAST AROUND 40 MILES AN HOUR AND WILL HIT THE CITY OF PONTIAC BY 350 AM AND THE CITY OF ROCHESTER BY 415 AM. THUNDERSTORMS PRODUCE DEADLY LIGHTNING...VERY HEAVY RAIN AND STRONG AND GUSTY WINDS. IF YOU ARE CAUGHT OUTSIDE IN A THUNDERSTORM...SEEK SHELTER INSIDE A STRONG BUILDING IMMEDIATELY. STAY TUNED TO NATIONAL WEATHER SERVICE RADIO STATION KEC-63 FOR THE LATEST UPDATES ON CURRENT WZEATHER CONDITIONS. KMW
Special weather statement, Jul 28, 3:42 AM EDT, 1 hour 11 minutes before
MIZ019-021-027-028-280942- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DETROIT MI 342 AM EDT WED JUL 28 1993 ...THUNDERSTORMS WERE MOVING INTO SOUTHEAST LOWER MICHIGAN... AT 337 AM EDT...WEATHER SERVICE RADAR INDICATED THAT A LINE OF SHOWERS AND THUNDERSTORMS EXTENDED FROM 20 MILES WEST OF BAY CITY SOUTHEASTWARD THROUGH NORTHEAST LIVINGSTON COUNTY CONTINUING DOWN TO PONTIAC MICHIGAN IN OAKLAND COUNTY. THE STRONGEST STORM WAS LOCATED NEAR WATERFORD IN OAKLAND COUNTY...ABOUT 31 MILES NORTHWEST OF DOWNTOWN DETROIT. THE STORMS WERE MOVING TO THE EAST AROUND 40 MILES AN HOUR AND WILL HIT THE CITY OF PONTIAC BY 350 AM AND THE CITY OF ROCHESTER BY 415 AM. THUNDERSTORMS PRODUCE DEADLY LIGHTNING...VERY HEAVY RAIN AND STRONG AND GUSTY WINDS. IF YOU ARE CAUGHT OUTSIDE IN A THUNDERSTORM...SEEK SHELTER INSIDE A STRONG BUILDING IMMEDIATELY. STAY TUNED TO NATIONAL WEATHER SERVICE RADIO STATION KEC-63 FOR THE LATEST UPDATES ON CURRENT WEATHER CONDITIONS. KMW
Special weather statement, Jul 28, 4:10 AM EDT, 43 minutes before
MIZ026-031>034-036>038-042-280930- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE FLINT MI 410 AM EDT WED JUL 28 1993 ...A LINE OF STRONG THUNDERSTORMS CONTINUED ACROSS PARTS OF EAST CENTRAL LOWER MICHIGAN... AT 406 AM EDT...RADAR INDICATED A LINE OF STRONG THUNDERSTORMS WITH VERY HEAVY RAIN EXTENDED FROM SAGINAW BAY...THROUGH SAGINAW...AND THEN THROUGH THE CITY OF FLINT. PEA SIZE HAIL WAS REPORTED IN SWARTZ CREEK WITH THIS STORM NOW OVER FLINT. ALSO...ANOTHER STRONG CELL WAS LOCATED JUST NORTH OF FRANKENMUTH...WHICH IS 15 MILES SOUTHEAST OF SAGINAW. ALL STORMS WERE MOVING TO THE EAST AT 40 MILES AN HOUR. BY 445 AM...THE LINE OF STRONG THUNDERSTORMS WILL EXTEND FROM HURON COUNTY...SOUTH...THROUGH LAPEER COUNTY...INCLUDING THE CITIES OF BAD AXE AND LAPEER. PEA SIZE HAIL AND WIND GUSTS TO 40 MPH ARE POSSIBLE WITH THESE STORMS. . TAKE SHELTER AS THESE STORMS MOVE TOWARD YOU. WHILE DRIVING...THE VERY HEAVY RAIN WILL REDUCE VISIBILITY GREATLY...SO REDUCE YOUR SPEED. HELGESON
Special weather statement, Jul 28, 4:10 AM EDT, 43 minutes before
MIZ026-031>034-036>038-042-280930- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE FLINT MI 410 AM EDT WED JUL 28 1993 ...A LINE OF STRONG THUNDERSTORMS CONTINUED ACROSS PARTS OF EAST CENTRAL LOWER MICHIGAN... AT 406 AM EDT...RADAR INDICATED A LINE OF STRONG THUNDERSTORMS WITH VERY HEAVY RAIN EXTENDED FROM SAGINAW BAY...THROUGH SAGINAW...AND THEN THROUGH THE CITY OF FLINT. PEA SIZE HAIL WAS REPORTED IN SWARTZ CREEK WITH THIS STORM NOW OVER FLINT. ALSO...ANOTHER STRONG CELL WAS LOCATED JUST NORTH OF FRANKENMUTH...WHICH IS 15 MILES SOUTHEAST OF SAGINAW. ALL STORMS WERE MOVING TO THE EAST AT 40 MILES AN HOUR. BY 445 AM...THE LINE OF STRONG THUNDERSTORMS WILL EXTEND FROM HURON COUNTY...SOUTH...THROUGH LAPEER COUNTY...INCLUDING THE CITIES OF BAD AXE AND LAPEER. PEA SIZE HAIL AND WIND GUSTS TO 40 MPH ARE POSSIBLE WITH THESE STORMS. . TAKE SHELTER AS THESE STORMS MOVE TOWARD YOU. WHILE DRIVING...THE VERY HEAVY RAIN WILL REDUCE VISIBILITY GREATLY...SO REDUCE YOUR SPEED. HELGESON
Special weather statement, Jul 28, 4:40 AM EDT, 13 minutes before
MIZ019-021-027-028-281045- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DETROIT MI 440 AM EDT WED JUL 28 1993 ...STRONG THUNDERSTORMS MOVING ACROSS SOUTHEAST LOWER MICHIGAN... AT 437 AM EDT...WEATHER SERVICE RADAR INDICATED STRONG THUNDERSTORMS OVER THE NORTHERN COUNTIES OF SOUTHEAST LOWER MICHIGAN. THE STONGEST THUNDERSTORMS WERE OVER TOWN OF THOMAS...39 MILES NORTH NORTHWEST OF DOWNTOWN DETROIT AND PONTIAC...26 MILES NORTH NORTHWEST OF DOWNTOWN DETROIT. THESE STORMS WERE MOVING TO THE EAST AT 40 MILES AN HOUR AND WILL AFFECT THE CITY OF MOUNT CLEMENS BY 450 AM AND NORTH OF ARMADA BY 500 AM. THESE STORMS HAVE UPROOTED TREES AND DOWNED POWERLINES IN PONTIAC. PERSONS IN THE PATH OF THESE STORMS SHOULD FIND SHELTER IN A STRONG BUILDING. DO NOT USE ELECTRICAL APPLIANCES OR THE TELEPHONES UNTIL THE STORMS HAVE CLEARED YOUR AREA. . STAY TUNED TO NATIONAL WEATHER SERVICE RADIO STATION KEC-63 FOR THE LATEST UPDATES ON THIS WEATHER SITUATION. BBN
Special weather statement, Jul 28, 4:47 AM EDT, 6 minutes before
MIZ019-021-027-028-281045- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DETROIT MI 440 AM EDT WED JUL 28 1993 ...STRONG THUNDERSTORMS MOVING ACROSS SOUTHEAST LOWER MICHIGAN... AT 437 AM EDT...WEATHER SERVICE RADAR INDICATED STRONG THUNDERSTORMS OVER THE NORTHERN COUNTIES OF SOUTHEAST LOWER MICHIGAN. THE STONGEST THUNDERSTORMS WERE OVER TOWN OF THOMAS...39 MILES NORTH NORTHWEST OF DOWNTOWN DETROIT AND PONTIAC...26 MILES NORTH NORTHWEST OF DOWNTOWN DETROIT. THESE STORMS WERE MOVING TO THE EAST AT 40 MILES AN HOUR AND WILL AFFECT THE CITY OF MOUNT CLEMENS BY 450 AM AND NORTH OF ARMADA BY 500 AM. THESE STORMS HAVE UPROOTED TREES AND DOWNED POWERLINES IN PONTIAC. PERSONS IN THE PATH OF THESE STORMS SHOULD FIND SHELTER IN A STRONG BUILDING. DO NOT USE ELECTRICAL APPLIANCES OR THE TELEPHONES UNTIL THE STORMS HAVE CLEARED YOUR AREA. . STAY TUNED TO NATIONAL WEATHER SERVICE RADIO STATION KEC-63 FOR THE LATEST UPDATES ON THIS WEATH ER SITUATION. BBN
The office that day
Everything else NWS Detroit, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 28, 4:17 AM EDT | Severe Thunderstorm Warning | DTX | Genesee | 30 min |
| Jul 28, 3:39 PM EDT | Severe Thunderstorm Warning | DTX | Saint Clair | 36 min |
| Jul 28, 3:48 PM EDT | Severe Thunderstorm Warning | DTX | Lenawee, Monroe | 57 min |
Nearby
Severe Thunderstorm Warnings in Michigan, 1993Every severe thunderstorm warning in 1993
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.