Alert archive / Michigan / High Wind Warnings in 2021
High Wind Warning 1, NWS Detroit, MI
NWS Detroit, MI issued this high wind warning at Sep 7, 2021, 9:00 PM EDT for 6 counties in Michigan. It was in force for 94 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 7, 2021, 9:00 PM EDT (01:00 UTC)
- Expired
- Sep 7, 2021, 10:34 PM EDT
- In force
- 94 min
- Issued by
- NWS Detroit, MI
Counties Livingston County, MI, Macomb County, MI, Oakland County, MI, Saint Clair County, MI, Washtenaw County, MI, Wayne County, MI
The radar
The Detroit radar (KDTX), 19 km from the middle of the area, began a volume at 01:03 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Sep 7, 9:20 PM EDT | MARINE TSTM WIND 41 | 5 Sw Downtown Detroit, MI | MEASURED VIA SHIAWASSEE ST MESONET. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Alpena, MI (KAPX), launched 00:00Z, 1.0 hours before the alert went out and 288 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
- 270 J/kg
- Mixed-layer CIN
- -59 J/kg
- Mixed-layer LCL
- 1052 m above ground
- 0-6 km bulk shear
- 69 kt
- 0-1 km storm-relative helicity
- -11 m²/s²
- 0-3 km storm-relative helicity
- 41 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted.
649 WWUS73 KDTX 080100 NPWDTX URGENT - WEATHER MESSAGE National Weather Service Detroit/Pontiac MI 900 PM EDT Tue Sep 7 2021 MIZ063-068>070-075-076-080400- /O.NEW.KDTX.HW.W.0001.210908T0100Z-210908T0400Z/ St. Clair-Livingston-Oakland-Macomb-Washtenaw-Wayne- Including the cities of Port Huron, Howell, Pontiac, Warren, Ann Arbor, and Detroit 900 PM EDT Tue Sep 7 2021 ...HIGH WIND WARNING IN EFFECT UNTIL MIDNIGHT EDT TONIGHT... * WHAT...Southwest winds of 40 to 50 mph with some gusts to 60 mph. * WHERE...St. Clair, Livingston, Oakland, Macomb, Washtenaw and Wayne Counties. * WHEN...Until midnight EDT tonight. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles. * ADDITIONAL DETAILS...National Weather Service doppler radar has been observing a narrow corridor of strong wind development behind the trailing back edge of the shower and thunderstorm activity. Power outages have been reported. PRECAUTIONARY/PREPAREDNESS ACTIONS... People should avoid being outside in forested areas and around trees and branches. If possible, remain in the lower levels of your home during the windstorm, and avoid windows. Use caution if you must drive. && $$
1 follow-up statement
831 WWUS73 KDTX 080234 NPWDTX URGENT - WEATHER MESSAGE National Weather Service Detroit/Pontiac MI 1034 PM EDT Tue Sep 7 2021 MIZ063-068>070-075-076-080345- /O.CAN.KDTX.HW.W.0001.000000T0000Z-210908T0400Z/ St. Clair-Livingston-Oakland-Macomb-Washtenaw-Wayne- Including the cities of Port Huron, Howell, Pontiac, Warren, Ann Arbor, and Detroit 1034 PM EDT Tue Sep 7 2021 ...HIGH WIND WARNING IS CANCELLED... Southwest surface wind speeds have weakened and been observed in the 5 to 20 mph range across Metro Detroit. Therefore, the High Wind Warning has been cancelled. $$ CB
The office that day
Everything else NWS Detroit, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 7, 8:30 PM EDT | Special Weather Statement | DTX | Lenawee, Monroe, Wayne | 60 min |
| Sep 7, 8:46 PM EDT | Special Marine Warning | DTX | 89 min | |
| Sep 7, 8:56 PM EDT | Tornado Warning | DTX | Monroe | 26 min |
| Sep 7, 9:00 PM EDT | Special Marine Warning | DTX | 75 min | |
| Sep 7, 10:10 PM EDT | Small Craft Advisory | DTX | 18 hr |
Nearby
High Wind Warnings in Michigan, 2021Every high wind warning in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.