Alert archive / Michigan / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 49, NWS Detroit, MI
NWS Detroit, MI issued this severe thunderstorm warning at Sep 26, 1986, 8:57 PM EDT for Macomb County, Saint Clair County, Michigan. It was in force for 63 min.
The area
The counties it named.
The facts
- Issued
- Sep 26, 1986, 8:57 PM EDT (00:57 UTC)
- Expired
- Sep 26, 1986, 10:00 PM EDT
- In force
- 63 min
- Issued by
- NWS Detroit, MI
- Area
- Whole counties
Counties Macomb County, MI, Saint Clair 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 00:00Z, 1.0 hours before the alert went out and 53 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
- 1454 J/kg
- Mixed-layer CIN
- -37 J/kg
- Mixed-layer LCL
- 843 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 114 m²/s²
- 0-3 km storm-relative helicity
- 149 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, Sep 26, 4:16 PM EDT, 4 hours 41 minutes before
SPECIAL WEATHER AND FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE ANN ARBOR MI 415 PM EDT FRI SEP 26 1986 ...A SEVERE THUNDERSTORM WATCH HAS BEEN ISSUED FOR MUCH OF SOUTH LOWER MICHIGAN UNTIL 900 PM EDT THIS EVENING... ...A FLASH FLOOD WATCH REMAINS IN EFFECT FOR THE SOUTH TWO THIRDS OF LOWER MICHIGAN... SEVERE THUNDERSTORM WATCH NUMBER 519 IS NOW IN EFFECT FOR MUCH OF SOUTH LOWER MICHIGAN... MAINLY SOUTH OF A GRAND RAPIDS.. SAGINAW LINE. THIS WATCH IS IN EFFECT UNTIL 900 PM EDT THIS EVENING. AT 410 PM EDT WEATHER RADAR SHOWED SCATTERED THUNDERSTORMS ACROSS NORTH ILLINOIS... NORTH INDIANA... SOUTH LOWER MICHIGAN AND NORTH OHIO. STORMS WERE MOVING EAST AT ABOUT 35 MPH. A FLOOD WARNING IS IN EFFECT FOR THE FLINT RIVER AT FLINT MICHIGAN... WHERE THUNDERSTORMS DUMPED MORE RAIN EARLIER TODAY. A FLASH FLOOD WATCH REMAINS IN EFFECT FOR THE SOUTH TWO THIRDS OF LOWER MICHIGAN THROUGH SATURDAY NIGHT. EACH BATCH OF THUNDERSTORMS WHICH CROSSES THE SOUTH TWO THIRDS OF THE LOWER PENINSULA WILL BRING THE THREAT OF HEAVY RAINFALL... AND THE ATTENDANT RISK OF FLASH FLOODING. A FLASH FLOOD WATCH MEANS RAPID FLOODING IS POSSIBLE WITHIN THE WATCH AREA. PERSONS IN THIS AREA SHOULD REMAIN ALERT AND BE READY TO TAKE QUICK ACTION IF FLOODING IS OBSERVED OR A WARNING ISSUED.
Special weather statement, Sep 26, 4:17 PM EDT, 4 hours 40 minutes before
SPECIAL WEATHER AND FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE ANN ARBOR MI 415 PM EDT FRI SEP 26 1986 ...A SEVERE THUNDERSTORM WATCH HAS BEEN ISSUED FOR MUCH OF SOUTH LOWER MICHIGAN UNTIL 900 PM EDT THIS EVENING... ...A FLASH FLOOD WATCH REMAINS IN EFFECT FOR THE SOUTH TWO THIRDS OF LOWER MICHIGAN... SEVERE THUNDERSTORM WATCH NUMBER 519 IS NOW IN EFFECT FOR MUCH OF SOUTH LOWER MICHIGAN... MAINLY SOUTH OF A GRAND RAPIDS.. SAGINAW LINE. THIS WATCH IS IN EFFECT UNTIL 900 PM EDT THIS EVENING. AT 410 PM EDT WEATHER RADAR SHOWED SCATTERED THUNDERSTORMS ACROSS NORTH ILLINOIS... NORTH INDIANA... SOUTH LOWER MICHIGAN AND NORTH OHIO. STORMS WERE MOVING EAST AT ABOUT 35 MPH. A FLOOD WARNING IS IN EFFECT FOR THE FLINT RIVER AT FLINT MICHIGAN... WHERE THUNDERSTORMS DUMPED MORE RAIN EARLIER TODAY. A FLASH FLOOD WATCH REMAINS IN EFFECT FOR THE SOUTH TWO THIRDS OF LOWER MICHIGAN THROUGH SATURDAY NIGHT. EACH BATCH OF THUNDERSTORMS WHICH CROSSES THE SOUTH TWO THIRDS OF THE LOWER PENINSULA WILL BRING THE THREAT OF HEAVY RAINFALL... AND THE ATTENDANT RISK OF FLASH FLOODING. A FLASH FLOOD WATCH MEANS RAPID FLOODING IS POSSIBLE WITHIN THE WATCH AREA. PERSONS IN THIS AREA SHOULD REMAIN ALERT AND BE READY TO TAKE QUICK ACTION IF FLOODING IS OBSERVED OR A WARNING ISSUED. KAUFMAN
Special weather statement, Sep 26, 6:17 PM EDT, 2 hours 40 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE FLINT MI
600 PM EDT FRI SEP 26 1986
... THUNDERSTORMS CAUSING URBAN FLOODING...
AT 6 PM EDT RADAR INDICATED A HEAVY THUNDERSTORM MOVING INTO THE
SOUTHWEST PORTION OF SHIAWASSEE COUNTY. HEAVY RAIN DANGEROUS LIGHTENING
AND GUSTY WINDS ARE LIKELY WITH THIS STORM.
FLOODING OF SMALL STREAMS ..LOW LYING AREAS.. AND STREETS AND UNDERPASSES
ARE LIKELY AS THIS STORM PASSES OVER THE AREA. THIS STORM IS MOVING EAST
AT 35 MPH AND WILL ENTER GENESEE COUNTY WITHIN THE HOUR. THIS STORM WILL
MOVE OVER THE SAME AREA THAT HAD THE HEAVY RAIN FALL EARLIER TODAY.
PERSONS IN FLOOD PRONE AREAS SHOULD PREPARE TO TAKE APPROPRIATE ACTION
AND MONITOR THE RAINFALL CLOSELY.
A FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 8 AM EDT SUNDAY MORNING.
AND A SEVER THUNDERSTORM WATCH IS IN EFFECT UNTIL 9 PM EDT THIS EVENING.
STAY TUNED TO NOAA WEATHER RADIO OR LOCAL TELEVISION OR COMMERCIAL
RADIO FOR LATER UPDATES AND POSSIBLE WARNINGS.
BURNSSpecial weather statement, Sep 26, 7:49 PM EDT, 1 hour 8 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE FLINT MI 730 PM EDT FRI SEP 26 1986 ... SEVERE THUNDER STORM WATCH IN EFFECT UNTIL 9 PM EDT... ... FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 8 AM SUNDAY MORNING.. ....FLOOD WARNING FOR THE FLINT RIVER AT FLINT.... AT 730 PM EDT RADAR INDICATED HEAVY THUNDERSTORMS MOVING THROUGH THE EXTREME SOUTHEASTERN PORTION OF GENESEE COUNTY. AN AREA OF MOSTLY RAIN WITH SCATTERED THUNDERSTORMS EXTENDES WEST TO 30 MILES WEST OF LANSING. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 9PM EDT THIS FRIDAY EVENING. A FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 8 AM EDT SUNDAY MORNING. A FLOOD WARNING IS IN EFFECT FOR THE FLINT RIVER AT FLINT. ALTHOUGH THE HEAVY THUNDERSTORMS WILL MOVE OUT OF THE AREA IN THE NEXT HOUR THE THREAT OF HEAVY RAIN WILL CONTINUE FOR AT LEAT THE NEXT SEVERAL HOURS. STAY TUNED TO NOAA WEATHER RADIO OR LOCAL TELEVISION OR COMMERCIAL RADIO FOR LATER UPDATES AND POSSIBLE WARNINGS. BURNS
Special weather statement, Sep 26, 8:08 PM EDT, 49 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ANN ARBOR MI 808 PM EDT FRI SEP 26 1986 ...THUNDERSTORMS IN SOUTHEAST LOWER MICHIGHAN... AT 800 PM EDT A LARGE AREA OF THUNDERSTORMS WAS OVER SOUTHEAST LOWER MICHIGAN... WEST OHIO... AND EXTREME NORTHEAST INDIANA. STORMS WERE MOVING EAST AT 30 MPH. NO REPORTS OF SEVERE WEATHER HAVE BEEN RECEIVED IN THE PAST HOUR. THE FOLLOWING LOWER MICHIGAN COUNTIES HAVE BEEN REMOVED FROM THE SEVERE THUNDERSTORM WATCH AREA... HURON.. SAGINAW.. TUSCOLA.. SANILAC.. CLINTON.. SHIAWASSEE.. GENESEE.. LAPEER.. EATON.. INGHAM.. LIVINGSTON.. CALHOUN.. JACKSON.. WASHTENAW.. BRANCH.. HILLSDALE.. LENAWEE. SEVERE THUNDERSTORM WATCH NUMBER 519 CONTINUES IN EFFECT FOR EXTREME SOUTHEAST LOWER MICHIGAN. KAUFMAN
Special weather statement, Sep 26, 8:32 PM EDT, 25 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE FLINT MI 830 PM EDT FRI SEP 26 1986 ... THUNDERSTORMS OVER EASTCENTRAL LOWER MICHIGAN.... THE SEVERE THUNDERSTORM WATCH FOR EAST CENTRAL LOWER MICHIGAN HAS BEEN CANCELLED. AT 815 PM EDT A LARGE AREA OF MOSTLY RAIN WITH SCATTERED THUNDERSTORMS WAS OVER SOUTHEAST LOWER MICHIGAN. THIS AREA EXTENDED FROM NEAR LANSING TO 30 NORTHEAST OF FLINT MICHIGAN SOUTH INTO OHIO. MOVEMENT WAS TOWARDS THE EAST AT 35 MPH. A FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 8 AM EDT SUNDAY MORNING. THE THREAT OF FLOODING WILL CONTINUE OVER EAST CENTRAL LOWER MICHIGAN AS THIS AREA OF THUNDERSTORMS AND RAIN MOVES THROUGH THE AREA. A FLOOD WARNING IS IN EFFECT FOR THE FLINT RIVER AT FLINT. THE FLINT RIVER AT FLINT IS ABOVE FLOOD STAGE. AT 7 PM EDT IT WAS AT 12.12 FEET AND IS FORECAT TO CREST NEAR 13 FEET SATURDAY MORNING. PERSONS IN FLOOD PRONE AREAS SHOULD PREPARE TO TAKE APPROPRIATE ACTION AND MONITO3R THE RAINFALL CLOSELY. STAY TUNED TO NOAA WEATHER RADIO OR LOCAL TELEVISION OR COMMERCIAL RADIO FOR LATER UPDATES AND POSSIBLE WARNINGS. BURNS
The office that day
Everything else NWS Detroit, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 26, 8:12 PM EDT | Tornado Warning | DTX | Macomb, Oakland | 48 min |
Nearby
Severe Thunderstorm Warnings in Michigan, 1986Every severe thunderstorm warning in 1986
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.