Alert archive / Michigan / Special Weather Statements in 2021
Special Weather Statement, NWS Detroit, MI
NWS Detroit, MI issued this special weather statement at Oct 8, 2021, 2:49 PM EDT for Oakland County, Michigan. It was in force for 56 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Oct 8, 2021, 2:49 PM EDT (18:49 UTC)
- Expired
- Oct 8, 2021, 3:45 PM EDT
- In force
- 56 min
- Issued by
- NWS Detroit, MI
- Hail
- 0.50 in
- Wind
- 30
County Oakland County, MI
The radar
The Detroit radar (KDTX), 23 km from the middle of the area, began a volume at 18:53 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.
The nearest sounding before it
Detroit, MI (KDTX), launched 12:00Z, 6.8 hours before the alert went out and 19 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
- 421 J/kg
- Mixed-layer CIN
- -28 J/kg
- Mixed-layer LCL
- 683 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 68 m²/s²
- 0-3 km storm-relative helicity
- 63 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
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</html>What forecasters said that day
The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Detroit, MI wrote its last area forecast discussion before this special weather statement went out at Oct 8, 12:47 PM EDT, 2 hours 2 minutes earlier.
Area forecast discussion, Oct 8, 12:47 PM EDT, 2 hours 2 minutes before
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</html>Hazardous weather outlook, Oct 8, 4:02 AM EDT, 10 hours 47 minutes before
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</html>In the hours before
Special weather statement, Oct 8, 2:49 PM EDT, 0 minutes before
Special Weather Statement
National Weather Service Detroit/Pontiac MI
249 PM EDT Fri Oct 8 2021
MIZ069-081945-
Oakland MI-
249 PM EDT Fri Oct 8 2021
...A strong thunderstorm will impact portions of northeastern Oakland
County through 345 PM EDT...
At 248 PM EDT, Doppler radar was tracking a strong thunderstorm near
Rochester, or near Pontiac, moving north at 10 mph.
HAZARD...Winds in excess of 30 mph and half inch hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
This strong thunderstorm will be near...
Oxford around 325 PM EDT.
Other locations impacted by this storm include Rochester Hills,
Lakeville, Leonard, Lake Orion, Auburn Hills, Lake Angelus and
Bloomfield Township.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 4262 8311 4260 8328 4288 8337 4289 8310
TIME...MOT...LOC 1848Z 169DEG 10KT 4273 8323
MAX HAIL SIZE...0.50 IN
MAX WIND GUST...30 MPH
SCThe office that day
Everything else NWS Detroit, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 8, 4:07 PM EDT | Special Weather Statement | DTX | Macomb | 38 min |
| Oct 8, 4:26 PM EDT | Areal Flood Advisory | DTX | Oakland | 4 hr |
Nearby
Special Weather Statements in Michigan, 2021Every special weather statement 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.