Alert archive / Michigan / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 5, NWS Detroit, MI
NWS Detroit, MI issued this severe thunderstorm warning at Jun 12, 2021, 8:59 PM EDT for Bay County, Saginaw County, Michigan. It was in force for 24 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jun 12, 2021, 8:59 PM EDT (00:59 UTC)
- Expired
- Jun 12, 2021, 9:23 PM EDT
- In force
- 24 min
- Issued by
- NWS Detroit, MI
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Bay County, MI, Saginaw County, MI
The radar
The Detroit radar (KDTX), 101 km from the middle of the area, began a volume at 00:58 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 |
|---|---|---|---|
| Jun 12, 9:10 PM EDT | TSTM WND DMG | 5 E Auburn, MI | BAY COUNTY CENTRAL DISPATCH REPORTED TREES DOWN NEAR FOUR MILE AND MIDLAND RDS. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Detroit, MI (KDTX), launched 00:00Z, 1.0 hours before the alert went out and 100 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
- 1692 J/kg
- Mixed-layer CIN
- -5 J/kg
- Mixed-layer LCL
- 1112 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 24 m²/s²
- 0-3 km storm-relative helicity
- 90 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.1
The text
As transmitted.
767
WUUS53 KDTX 130059
SVRDTX
MIC017-145-130200-
/O.NEW.KDTX.SV.W.0005.210613T0059Z-210613T0200Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Detroit/Pontiac MI
859 PM EDT Sat Jun 12 2021
The National Weather Service in Detroit/Pontiac has issued a
* Severe Thunderstorm Warning for...
Southern Bay County in southeastern Michigan...
Northeastern Saginaw County in southeastern Michigan...
* Until 1000 PM EDT.
* At 859 PM EDT, a severe thunderstorm was located over Kawkawlin, or
near Bay City, moving southeast at 30 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.
* This severe thunderstorm will be near...
Bay City and Essexville around 905 PM EDT.
Zilwaukee around 915 PM EDT.
Other locations in the path of this severe thunderstorm include
Saginaw, Munger, Bridgeport and Frankenmuth.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4369 8387 4362 8369 4359 8368 4358 8370
4329 8370 4329 8387 4349 8397 4367 8408
4374 8391
TIME...MOT...LOC 0059Z 328DEG 25KT 4362 8395
HAIL...1.00IN
WIND...60MPH
$$
AM2 follow-up statements
668
WWUS53 KDTX 130114
SVSDTX
Severe Weather Statement
National Weather Service Detroit/Pontiac MI
914 PM EDT Sat Jun 12 2021
MIC017-145-130200-
/O.CON.KDTX.SV.W.0005.000000T0000Z-210613T0200Z/
Bay MI-Saginaw MI-
914 PM EDT Sat Jun 12 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1000 PM EDT
FOR SOUTHEASTERN BAY AND NORTHEASTERN SAGINAW COUNTIES...
At 914 PM EDT, a severe thunderstorm was located near Bay City,
moving southeast at 35 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Munger and Frankenmuth.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4362 8369 4359 8368 4358 8370 4329 8370
4329 8380 4361 8397 4366 8384
TIME...MOT...LOC 0114Z 321DEG 30KT 4356 8383
HAIL...1.00IN
WIND...60MPH
$$
AM874
WWUS53 KDTX 130123
SVSDTX
Severe Weather Statement
National Weather Service Detroit/Pontiac MI
923 PM EDT Sat Jun 12 2021
MIC017-145-130132-
/O.CAN.KDTX.SV.W.0005.000000T0000Z-210613T0200Z/
Bay MI-Saginaw MI-
923 PM EDT Sat Jun 12 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN BAY AND
NORTHEASTERN SAGINAW COUNTIES IS CANCELLED...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled. However heavy rain is
still possible with this thunderstorm.
LAT...LON 4362 8369 4359 8368 4358 8370 4329 8370
4329 8380 4361 8397 4366 8384
TIME...MOT...LOC 0121Z 328DEG 25KT 4351 8379
$$
AMThe office that day
Everything else NWS Detroit, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 12, 8:03 PM EDT | Severe Thunderstorm Warning | DTX | Bay, Midland | 57 min |
| Jun 12, 9:23 PM EDT | Special Weather Statement | DTX | Midland | 52 min |
| Jun 12, 10:16 PM EDT | Special Weather Statement | DTX | Saginaw, Shiawassee | 59 min |
| Jun 12, 10:40 PM EDT | Special Weather Statement | DTX | Genesee | 65 min |
| Jun 13, 12:35 AM EDT | Special Weather Statement | DTX | Macomb | 55 min |
| Jun 13, 3:21 AM EDT | Special Marine Warning | DTX | 54 min | |
| Jun 13, 3:23 AM EDT | Special Weather Statement | DTX | Monroe | 67 min |
Nearby
Severe Thunderstorm Warnings in Michigan, 2021Every severe thunderstorm 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.