Alert archive / Michigan / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 11, NWS Detroit, MI
NWS Detroit, MI issued this severe thunderstorm warning at Jul 18, 1990, 5:00 PM EDT for Genesee County, Tuscola County, Michigan. It was in force for 45 min. 1 report 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
- Jul 18, 1990, 5:00 PM EDT (21:00 UTC)
- Expired
- Jul 18, 1990, 5:45 PM EDT
- In force
- 45 min
- Issued by
- NWS Detroit, MI
- Area
- Whole counties
Counties Genesee County, MI, Tuscola County, MI
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 18, 5:30 PM EDT | Thunderstorm Wind 0 | Genesee, 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
Detroit, MI (KFNT), launched 12:00Z, 9.0 hours before the alert went out and 61 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
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 18, 3:09 PM EDT, 1 hour 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, 1 hour 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, 1 hour 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, 1 hour 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, 1 hour 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, 0 minutes 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, 5:18 PM EDT | Tornado Warning | DTX | Genesee | 27 min |
| Jul 18, 6:00 PM EDT | Severe Thunderstorm Warning | DTX | Macomb, Oakland, Saint Clair | 40 min |
| Jul 18, 6:00 PM EDT | Severe Thunderstorm Warning | DTX | Livingston | 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.