Alert archive / Michigan / Tornado Warnings in 1990
Tornado Warning 4, NWS Detroit, MI
NWS Detroit, MI issued this tornado warning at Sep 14, 1990, 2:01 PM EDT for Oakland County, Michigan. It was in force for 29 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
- Sep 14, 1990, 2:01 PM EDT (18:01 UTC)
- Expired
- Sep 14, 1990, 2:30 PM EDT
- In force
- 29 min
- Issued by
- NWS Detroit, MI
- Area
- Whole counties
County Oakland 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 |
|---|---|---|---|
| Sep 14, 2:25 PM EDT | Thunderstorm Wind 62 | Oakland, 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, 6.0 hours before the alert went out and 8 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
- 134 J/kg
- Mixed-layer CIN
- -58 J/kg
- Mixed-layer LCL
- 825 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 82 m²/s²
- 0-3 km storm-relative helicity
- 82 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 141801
TORDTW
MIC125-141830-
BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DETROIT MI
201 PM EDT FRI SEP 14 1990
THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING
EFFECTIVE UNTIL 230 PM EDT FOR PEOPLE IN THE FOLLOWING COUNTY
IN THE SOUTHEAST PART OF LOWER MICHIGAN
OAKLAND
AT 155 PM EDT...SKYWARN SPOTTERS REPORTED A TORNADO TOUCHDOWN IN
THE CITY OF HARTLAND...41 MILES NORTHWEST OF DOWNTOWN DETROIT IN
EXTREME EASTERN LIVINGSTON COUNTY. PEOPLE IN THE CITIES OF
HIGHLAND...WHITE LAKE AND PONTIAC SHOULD TAKE COVER NOW.
MOVEMENT WAS EAST NORTHEAST AT 35 MILES AN HOUR.
IF YOU LIVE IN A HOME OR APARTMENT...FIND SHELTER IN THE INNERMOST
PORTION OF THE BUILDING ON THE LOWEST FLOOR. GET TO A BASEMENT IF
ONE IS AVAILABLE. AVOID WINDOWS. PROTECT YOURSELF FROM FLYING
DEBRIS WITH CUSHIONS...BLANKETS...OR PILLOWS.The office that day
Everything else NWS Detroit, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 14, 12:56 PM EDT | Severe Thunderstorm Warning | DTX | Genesee, Shiawassee | 64 min |
| Sep 14, 1:09 PM EDT | Severe Thunderstorm Warning | DTX | Tuscola | 66 min |
| Sep 14, 1:34 PM EDT | Severe Thunderstorm Warning | DTX | Livingston, Washtenaw | 41 min |
| Sep 14, 1:34 PM EDT | Severe Thunderstorm Warning | DTX | Lenawee | 41 min |
| Sep 14, 1:54 PM EDT | Severe Thunderstorm Warning | DTX | Sanilac | 51 min |
| Sep 14, 2:14 PM EDT | Severe Thunderstorm Warning | DTX | Monroe, Wayne | 61 min |
| Sep 14, 2:14 PM EDT | Severe Thunderstorm Warning | DTX | Macomb, Saint Clair | 61 min |
| Sep 14, 2:26 PM EDT | Tornado Warning | DTX | Macomb | 49 min |
Nearby
Tornado Warnings in Michigan, 1990Every tornado warning in 1990Tornadoes 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.