Alert archive / Michigan / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 13, NWS Detroit, MI
NWS Detroit, MI issued this severe thunderstorm warning at Jul 18, 1990, 6:00 PM EDT for Livingston County, Michigan. It was in force for 40 min.
The area
The counties it named.
The facts
- Issued
- Jul 18, 1990, 6:00 PM EDT (22:00 UTC)
- Expired
- Jul 18, 1990, 6:40 PM EDT
- In force
- 40 min
- Issued by
- NWS Detroit, MI
- Area
- Whole counties
County Livingston 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
Detroit, MI (KFNT), launched 12:00Z, 10.0 hours before the alert went out and 41 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- NaN m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 116 m²/s²
- 0-3 km storm-relative helicity
- 96 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KDTW 182200
SVRDTW
MIC093-125-099-147-182300-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING
NATIONAL WEATHER SERVICE DETROIT MI
600 PM EDT WED JUL 18 1990
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
AND SPECIAL MARINE WARNING EFFECTIVE UNTIL 700 PM EDT FOR
PEOPLE IN THE FOLLOWING COUNTIES
IN THE SOUTHEAST PART OF LOWER MICHIGAN
LIVINGSTON...OAKLAND...MACOMB...ST. CLAIR
...THIS WARNING ALSO INCLUDES THE ADJACENT COASTAL WATERS FOR THE
COUNTIES JUST MENTIONED
AT 555PM A NARROW LINE OF SEVERE THUNDERSTORMS WAS INDICATED BY
RADAR FROM JUST NORTHWEST OF PORT HURON MICHIGAN TO JUST SOUTHWEST
OF FLINT MICHIGAN. MOVEMENT WAS SOUTHEAST AT 30 TO 35 MILES AN HOUR
SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOU PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS.' HEAVY RAINS FLOOD ROADWAYS QUICKLY...
AVOID DRIVING INTO AREAS WHERE WATER COVERS THE ROAD.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 18, 3:09 PM EDT, 2 hours 51 minutes before
MIZ031>034-036>039-042 181700- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE FLINT MI 330 PM EDT TUE JUL 18 1990 ...SEVERE THUNDERSTORMS WATCH FOR EAST CENTRAL MICHIGAN UNTIL 9PM... AT 230 PM EDT...AN AREA OF THUNDERSTORM...40 MILE WIDE... WERE LOCATED IN EASTERN BAY.. NORTHERN TUSCOLA AND CENTRAL HURON COUNTIES. AT 155 EDT HALF INCH HAIL WAS REPORTED AT STANDISH. AT 237 EDT LESS 3/4 INCH OF HAIL WAS REPORTED IN HURON COUNTY. THE AREA WAS MOVING TO THE SOUTHEAST AROUND 20 MILES AND HOUR WHILE THE INDIVIDUAL STROMS WERE MOVING EAST AROUND 45 MILES AND HOUR. PERSONS IN EAST CENTRAL MICHIGAN SHOULD SEEK SHELTER IF THREATENING WEATHER DEVELOPS. FITZGERALD
Special weather statement, Jul 18, 3:28 PM EDT, 2 hours 32 minutes before
MIZ031>034-036>039-042 181700- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE FLINT MI 330 PM EDT TUE JUL 18 1990 ...SEVERE THUNDERSTORMS WATCH FOR EAST CENTRAL MICHIGAN UNTIL 9PM... AT 230 PM EDT...AN AREA OF THUNDERSTORM...40 MILE WIDE... WERE LOCATED IN EASTERN BAY.. NORTHERN TUSCOLA AND CENTRAL HURON COUNTIES. AT 155 EDT HALF INCH HAIL WAS REPORTED AT STANDISH. AT 237 EDT LESS 3/4 INCH OF HAIL WAS REPORTED IN HURON COUNTY. THE AREA WAS MOVING TO THE SOUTHEAST AROUND 20 MILES AND HOUR WHILE THE INDIVIDUAL STROMS WERE MOVING EAST AROUND 45 MILES AND HOUR. PERSONS IN EAST CENTRAL MICHIGAN SHOULD SEEK SHELTER IF THREATENING WEATHER DEVELOPS. FITZGERALD
Special weather statement, Jul 18, 3:50 PM EDT, 2 hours 10 minutes before
MIZ001>068-182100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ANN ARBOR MI 350 PM EDT WED JUL 18 1990 ...SEVERE THUNDERSTORMS WATCH 624 CONTINUES IN EFFECT TILL 900 PM EDT FOR ALL OF CENTRAL AND SOUTHERN LOWER MICHIGAN... THIS SEVERE THUNDERSTORM WATCH COVERS ALL OF MICHIGANS LOWER PENINSULA SOUTH OF A LINE...FROM 50 MILES NORTH OF MUSKEGON...TO 55 MILES NORTHEAST OF BAY CITY...OR ROUGHLY FROM LUDDINGTON TO TAWAS CITY. A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE FARORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND GUSTS OF 60 MILES AN HOUR OR GREATER...AND / OR HAIL 3/4 INCH IN DIAMETER OR GREATER. AT 345 PM EDT...AN AREA OF THUNDERSTORMS CONTINUED ACROSS CENTRAL LOWER MICHIGAN. THIS AREA WAS 40 MILES WIDE...AND WAS CENTERED ALONG A LINE FROM MUSKEGON TO SAGINAW BAY...AND THEN ACROSS THE THUMB AREA. THIS AREA OF THUNDERSTORMS WAS MOVING SOUTHEAST AT 30 MILES AN HOUR. THESE THUNDDRSTORMS WERE PRODUCING VERY HEAVY RAIN...GUSTY WINDS... AND FREQUENT LIGHTNING. SOME OF THE STORNGER STORMS WERE PRODUCING HAIL. A FEW OF THESE STORMS HAVE AND WILL CONTINUE TO BECOME SEVERE. IF YOU LIVE IN CENTRAL OR SOUTHERN LOWER MICHIGAN...PLAN NOW WHAT YOU WILL DO SHOULD SEVERE THUNDERSTORMS DEVELOP IN YOUR BACKYARD. MOTORISTS CAN EXPECT SHARPLY REDUCED VISIBILITIES IN HEAVY RAIN FROM THESE STORMS. PONDING OF WATER ON ROADWAYS WILL RESULT IN SLIPPERY CONDITIONS. STAY TUNED TO THIS STATION FOR LATER STATEMENTS ON THIS DANGEROUS WEATHER SITUATION. EDF
Special weather statement, Jul 18, 3:52 PM EDT, 2 hours 8 minutes before
MIZ031>034-036>039-042 181700- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE FLINT MI 345 PM EDT TUE JUL 18 1990 ...SEVERE THUNDERSTORMS WATCH FOR EAST CENTRAL MICHIGAN UNTIL 9PM... ...SEVERE THUNDERSTORMS WARNING FOR MIDLAND..TUSCOLA..CENTRAL HURON COUNTIES. AT 330 PM EDT...AN AREA OF THUNDERSTORM...WERE LOCATED MIDLAND COUNTY. THE AREA WAS MOVING TO THE SOUTHEAST AROUND 20 MILES AND HOUR WHILE THE INDIVIDUAL STROMS WERE MOVING EAST AROUND 45 MILES AND HOUR. PERSONS IN EAST CENTRAL MICHIGAN SHOULD SEEK SHELTER IF THREATENING WEATHER DEVELOPS. FITZGERALD
Special weather statement, Jul 18, 3:54 PM EDT, 2 hours 6 minutes before
MIZ031>034-036>039-042 181700- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE FLINT MI 345 PM EDT TUE JUL 18 1990 ...SEVERE THUNDERSTORMS WATCH FOR EAST CENTRAL MICHIGAN UNTIL 9PM... ...SEVERE THUNDERSTORMS WARNING FOR MIDLAND..TUSCOLA..SANILAC COUNTIES AT 330 PM EDT...AN AREA OF THUNDERSTORM...WERE LOCATED MIDLAND COUNTY. THE AREA WAS MOVING TO THE SOUTHEAST AROUND 20 MILES AND HOUR WHILE THE INDIVIDUAL STROMS WERE MOVING EAST AROUND 45 MILES AND HOUR. PERSONS IN EAST CENTRAL MICHIGAN SHOULD SEEK SHELTER IF THREATENING WEATHER DEVELOPS. FITZGERALD
Special weather statement, Jul 18, 5:00 PM EDT, 1 hour before
MIZ001>068-182200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ANN ARBOR MI 500 PM EDT WED JUL 18 1990 ...SEVERE THUNDERSTORMS WATCH 624 CONTINUES IN EFFECT TILL 900 PM EDT FOR ALL OF CENTRAL AND SOUTHERN LOWER MICHIGAN... AT 450 PM EDT...AN AREA OF THUNDERSTORMS CONTINUED ACROSS CENTRAL LOWER MICHIGAN. THIS AREA WAS ABOUT 75 MILES WIDE. THE LEADING EDGE OF THE STORMS EXTENDED ALONG A LINE FROM 15 MILES NORTH OF FLINT...TO 15 MILES NORTH OF LANSING...TO JUST NORTH OF GRAND RAPIDS. MOVEMENT OF THE STORMS WAS SOUTHEAST AT 30 MILES AN HOUR. THESE THUNDERSTORMS WILL SPREAD ACROSS THE CITIES OF GRAND RAPIDS... LANSING...AND FLINT BETWEEN 5 AND 530 THIS EVENING. THESE THUNDDRSTORMS WERE PRODUCING VERY HEAVY RAIN...GUSTY WINDS... AND FREQUENT LIGHTNING. THERE HAVE GEEN NUMEROUS REPORTS OF PEA TO MARBLE SIZED HAIL. LARGER HAIL IS POSSIBLE WITH SOME OF THE STORMS. A FEW OF THESE THUNDERSTORMS HAVE AND WILL CONTINUE TO BECOME SEVERE. IF YOU LIVE IN CENTRAL OR SOUTHERN LOWER MICHIGAN...PLAN NOW WHAT YOU WILL DO SHOULD SEVERE THUNDERSTORMS DEVELOP IN YOUR BACKYARD. MOTORISTS CAN EXPECT SHARPLY REDUCED VISIBILITIES IN HEAVY RAIN FROM THESE STORMS. PONDING OF WATER ON [ROADWAYS WILL RESULT IN SLIPPERY CONDITIONS. STAY TUNED TO THIS STATION FOR LATER STATEMENTS ON THIS DANGEROUS WEATHER SITUATION. EDF
The office that day
Everything else NWS Detroit, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 18, 8:55 AM EDT | Severe Thunderstorm Warning | DTX | Crawford | 65 min |
| Jul 18, 1:28 PM EDT | Severe Thunderstorm Warning | DTX | Gladwin | 32 min |
| Jul 18, 1:54 PM EDT | Severe Thunderstorm Warning | DTX | Arenac, Bay | 66 min |
| Jul 18, 3:13 PM EDT | Severe Thunderstorm Warning | DTX | Sanilac, Tuscola | 62 min |
| Jul 18, 3:39 PM EDT | Severe Thunderstorm Warning | DTX | Midland | 46 min |
| Jul 18, 5:00 PM EDT | Severe Thunderstorm Warning | DTX | Genesee, Tuscola | 45 min |
| Jul 18, 5:18 PM EDT | Tornado Warning | DTX | Genesee | 27 min |
| Jul 18, 6:00 PM EDT | Severe Thunderstorm Warning | DTX | Macomb, Oakland, Saint Clair | 40 min |
Nearby
Severe Thunderstorm Warnings in Michigan, 1990Every 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.