Alert archive / Michigan / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 73, NWS Gaylord, MI
NWS Gaylord, MI issued this severe thunderstorm warning at Aug 9, 2011, 11:38 AM EDT for Antrim County, Charlevoix County, Michigan. It was in force for 67 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
- Aug 9, 2011, 11:38 AM EDT (15:38 UTC)
- Expired
- Aug 9, 2011, 12:45 PM EDT
- In force
- 67 min
- Issued by
- NWS Gaylord, MI
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Antrim County, MI, Charlevoix County, MI
The radar
The NCL Michigan radar (KAPX), 43 km from the middle of the area, began a volume at 15:39 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
Alpena, MI (KAPX), launched 12:00Z, 3.6 hours before the alert went out and 217 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
- 58 J/kg
- Mixed-layer CIN
- -108 J/kg
- Mixed-layer LCL
- 815 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 52 m²/s²
- 0-3 km storm-relative helicity
- 112 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.1
The text
As transmitted, in the capitals the NWS used until 2016.
621
WUUS53 KAPX 091538
SVRAPX
MIC009-029-091645-
/O.NEW.KAPX.SV.W.0073.110809T1538Z-110809T1645Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GAYLORD MI
1138 AM EDT TUE AUG 9 2011
THE NATIONAL WEATHER SERVICE IN GAYLORD HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHERN ANTRIM COUNTY IN NORTHERN LOWER MICHIGAN...
SOUTH CENTRAL CHARLEVOIX COUNTY IN NORTHERN LOWER MICHIGAN...
* UNTIL 1245 PM EDT
* AT 1129 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR
OMENA...OR 13 MILES NORTH OF ELK RAPIDS...AND MOVING EAST AT 25
MPH.
* LOCATIONS IMPACTED INCLUDE...
ELLSWORTH...EAST JORDAN...BOYNE CITY...TORCH LAKE...CENTRAL LAKE...
JORDAN TOWNSHIP...YOUNG STATE PARK...WARNER TOWNSHIP...WILDWOOD...
BOYNE FALLS AND WALLOON LAKE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.
&&
LAT...LON 4529 8485 4501 8487 4501 8539 4506 8539
4509 8538 4518 8539
TIME...MOT...LOC 1538Z 256DEG 23KT 4509 8542
WIND...HAIL 60MPH 1.00IN
$$
ARNOTT3 follow-up statements
064
WWUS34 KAPX 091600
SVSAPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GAYLORD MI
1200 PM EDT TUE AUG 9 2011
MIC009-029-091645-
/O.CON.KAPX.SV.W.0073.000000T0000Z-110809T1645Z/
ANTRIM MI-CHARLEVOIX MI-
1200 PM EDT TUE AUG 9 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTH CENTRAL
CHARLEVOIX AND NORTHERN ANTRIM COUNTIES UNTIL 1245 PM EDT...
AT 1157 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF
60 MPH. THIS STORM WAS LOCATED NEAR CENTRAL LAKE...OR NEAR
ELLSWORTH...MOVING EAST AT 30 MPH. PENNY SIZE HAIL MAY ALSO ACCOMPANY
THESE DAMAGING WINDS.
LOCATIONS IMPACTED INCLUDE...
EAST JORDAN...BOYNE CITY...JORDAN TOWNSHIP...YOUNG STATE PARK...
WARNER TOWNSHIP...WILDWOOD...BOYNE FALLS AND WALLOON LAKE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.
&&
LAT...LON 4529 8485 4501 8487 4501 8539 4506 8539
4509 8538 4518 8539
TIME...MOT...LOC 1600Z 259DEG 24KT 4511 8523
WIND...HAIL 60MPH 0.75IN
$$
JK203 WWUS34 KAPX 091619 SVSAPX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE GAYLORD MI 1219 PM EDT TUE AUG 9 2011 MIC029-091629- /O.CAN.KAPX.SV.W.0073.000000T0000Z-110809T1645Z/ CHARLEVOIX MI- 1219 PM EDT TUE AUG 9 2011 ...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL CHARLEVOIX COUNTY IS CANCELLED... THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED AND MOVED OUT OF THE WARNED AREA. LAT...LON 4502 8531 4508 8487 4501 8487 4501 8532 TIME...MOT...LOC 1619Z 259DEG 24KT 4499 8519 WIND...HAIL <50MPH <.50IN $$ MIC009-091645- /O.CON.KAPX.SV.W.0073.000000T0000Z-110809T1645Z/ ANTRIM MI- 1219 PM EDT TUE AUG 9 2011 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR CENTRAL ANTRIM COUNTY UNTIL 1245 PM EDT... AT 1215 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR BELLAIRE...MOVING EAST AT 25 MPH. LOCATIONS IMPACTED INCLUDE... MAINLY RURAL AREAS OFCENTRAL ANTRIM COUNTY. PRECAUTIONARY/PREPAREDNESS ACTIONS... SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. && LAT...LON 4502 8531 4508 8487 4501 8487 4501 8532 TIME...MOT...LOC 1619Z 259DEG 24KT 4499 8519 WIND...HAIL 60MPH 1.00IN $$ JK
203 WWUS34 KAPX 091634 SVSAPX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE GAYLORD MI 1234 PM EDT TUE AUG 9 2011 MIC009-091645- /O.CON.KAPX.SV.W.0073.000000T0000Z-110809T1645Z/ ANTRIM MI- 1234 PM EDT TUE AUG 9 2011 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EAST CENTRAL ANTRIM COUNTY UNTIL 1245 PM EDT... AT 1229 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED 6 MILES EAST OF BELLAIRE...MOVING EAST AT 30 MPH. LOCATIONS IMPACTED INCLUDE... MAINLY RURAL AREAS OF EASTERN ANTRIM COUNTY. PRECAUTIONARY/PREPAREDNESS ACTIONS... SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. && LAT...LON 4504 8515 4508 8487 4501 8487 4501 8520 TIME...MOT...LOC 1634Z 259DEG 24KT 4501 8505 WIND...HAIL 60MPH 1.00IN $$ JK
The office that day
Everything else NWS Gaylord, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 9, 9:03 AM EDT | Severe Thunderstorm Warning | APX | Chippewa, Mackinac | 33 min |
| Aug 9, 10:20 AM EDT | Flash Flood Warning | APX | Chippewa, Mackinac | 2 hr |
| Aug 9, 11:35 AM EDT | Special Marine Warning | APX | 35 min | |
| Aug 9, 12:09 PM EDT | Special Marine Warning | APX | 2 hr | |
| Aug 9, 12:15 PM EDT | Severe Thunderstorm Warning | APX | Antrim | 45 min |
| Aug 9, 1:42 PM EDT | Special Marine Warning | APX | 61 min | |
| Aug 9, 4:22 PM EDT | Small Craft Advisory | APX | 37 hr |
Nearby
Severe Thunderstorm Warnings in Michigan, 2011Every severe thunderstorm warning in 2011
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.