Alert archive / Michigan / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 69, NWS Gaylord, MI
NWS Gaylord, MI issued this severe thunderstorm warning at Jul 17, 2011, 10:56 PM EDT for Chippewa County, Mackinac County, Michigan. It was in force for 64 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
- Jul 17, 2011, 10:56 PM EDT (02:56 UTC)
- Expired
- Jul 18, 2011, 12:00 AM EDT
- In force
- 64 min
- Issued by
- NWS Gaylord, MI
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Chippewa County, MI, Mackinac County, MI
The radar
The NCL Michigan radar (KAPX), 128 km from the middle of the area, began a volume at 02:57 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 00:00Z, 2.9 hours before the alert went out and 195 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
- 2447 J/kg
- Mixed-layer CIN
- -38 J/kg
- Mixed-layer LCL
- 1112 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 82 m²/s²
- 0-3 km storm-relative helicity
- 113 m²/s²
- Significant tornado parameter
- 1.0
- Supercell composite
- 5.4
The text
As transmitted, in the capitals the NWS used until 2016.
603
WUUS53 KAPX 180256
SVRAPX
MIC033-097-180400-
/O.NEW.KAPX.SV.W.0069.110718T0256Z-110718T0400Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GAYLORD MI
1056 PM EDT SUN JUL 17 2011
THE NATIONAL WEATHER SERVICE IN GAYLORD HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
CENTRAL CHIPPEWA COUNTY IN EASTERN UPPER MICHIGAN...
EASTERN MACKINAC COUNTY IN EASTERN UPPER MICHIGAN...
* UNTIL MIDNIGHT EDT
* AT 1052 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
TROUT LAKE...OR 25 MILES NORTHWEST OF ST. IGNACE...AND MOVING EAST
AT 30 MPH.
* LOCATIONS IMPACTED INCLUDE...
MACKINAC ISLAND...EAST LAKE...FIBRE...MORAN...ALLENVILLE...
RUDYARD...KINROSS...DONALDSON...PICKFORD...BARBEAU...KELDEN...
HESSEL...CEDARVILLE...MUNUSCONG...STALWART...KINCHELOE AND
MARQUETTE ISLAND.
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 4630 8412 4626 8409 4620 8415 4620 8424
4618 8411 4595 8427 4591 8443 4598 8450
4589 8463 4583 8458 4581 8441 4574 8442
4587 8466 4597 8460 4597 8455 4602 8456
4604 8467 4590 8473 4618 8528 4637 8506
TIME...MOT...LOC 0255Z 292DEG 26KT 4619 8493
WIND...HAIL 60MPH 1.00IN
$$
JPB/MSB3 follow-up statements
614
WWUS34 KAPX 180314
SVSAPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GAYLORD MI
1114 PM EDT SUN JUL 17 2011
MIC033-097-180400-
/O.CON.KAPX.SV.W.0069.000000T0000Z-110718T0400Z/
MACKINAC MI-CHIPPEWA MI-
1114 PM EDT SUN JUL 17 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR CENTRAL
CHIPPEWA AND EASTERN MACKINAC COUNTIES UNTIL MIDNIGHT EDT...
AT 1110 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR
FIBRE...OR 23 MILES NORTHWEST OF ST. IGNACE...MOVING SOUTHEAST AT 30
MPH.
LOCATIONS IMPACTED INCLUDE...
MACKINAC ISLAND...RUDYARD...MORAN...ALLENVILLE...KINROSS...
PICKFORD...KELDEN...HESSEL...CEDARVILLE...STALWART...MUNUSCONG...
KINCHELOE AND MARQUETTE ISLAND.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.
&&
LAT...LON 4636 8500 4624 8411 4620 8415 4620 8424
4618 8412 4595 8427 4591 8443 4598 8450
4589 8463 4583 8458 4581 8441 4574 8442
4587 8466 4597 8460 4597 8455 4602 8456
4604 8467 4590 8473 4614 8520
TIME...MOT...LOC 0314Z 304DEG 27KT 4616 8490
WIND...HAIL 60MPH 1.00IN
$$
JPB/MSB463
WWUS34 KAPX 180343
SVSAPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GAYLORD MI
1143 PM EDT SUN JUL 17 2011
MIC033-097-180400-
/O.CON.KAPX.SV.W.0069.000000T0000Z-110718T0400Z/
MACKINAC MI-CHIPPEWA MI-
1143 PM EDT SUN JUL 17 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR CENTRAL
CHIPPEWA AND EASTERN MACKINAC COUNTIES UNTIL MIDNIGHT EDT...
AT 1138 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 FIBRE...OR 24 MILES NORTH OF ST. IGNACE...MOVING SOUTHEAST AT
30 MPH.
LOCATIONS IMPACTED INCLUDE...
MACKINAC ISLAND...RUDYARD...KINROSS...PICKFORD...HESSEL...KELDEN...
CEDARVILLE...STALWART...MUNUSCONG...KINCHELOE AND MARQUETTE ISLAND.
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 4636 8500 4624 8411 4620 8415 4620 8424
4618 8412 4595 8427 4591 8443 4598 8450
4589 8463 4583 8458 4581 8441 4574 8442
4587 8466 4597 8460 4597 8455 4602 8456
4604 8467 4590 8473 4614 8520
TIME...MOT...LOC 0343Z 293DEG 25KT 4619 8468
WIND...HAIL 60MPH 1.00IN
$$
JPB/MSB848
WWUS34 KAPX 180355
SVSAPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GAYLORD MI
1155 PM EDT SUN JUL 17 2011
MIC033-097-180405-
/O.EXP.KAPX.SV.W.0069.000000T0000Z-110718T0400Z/
MACKINAC MI-CHIPPEWA MI-
1155 PM EDT SUN JUL 17 2011
...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL CHIPPEWA AND EASTERN
MACKINAC COUNTIES WILL EXPIRE AT MIDNIGHT EDT...
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR
PROPERTY...HOWEVER HEAVY RAIN IS STILL POSSIBLE WITH THESE
THUNDERSTORMS.
LAT...LON 4636 8500 4624 8411 4620 8415 4620 8424
4618 8412 4595 8427 4591 8443 4598 8450
4589 8463 4583 8458 4581 8441 4574 8442
4587 8466 4597 8460 4597 8455 4602 8456
4604 8467 4590 8473 4614 8520
TIME...MOT...LOC 0355Z 293DEG 25KT 4616 8457
WIND...HAIL <50MPH <.50IN
$$
JPB/MSBThe office that day
Everything else NWS Gaylord, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 17, 11:41 PM EDT | Special Marine Warning | APX | 94 min | |
| Jul 17, 11:55 PM EDT | Special Marine Warning | APX | 76 min | |
| Jul 18, 12:22 AM EDT | Special Marine Warning | APX | 24 min | |
| Jul 18, 12:29 AM EDT | Severe Thunderstorm Warning | APX | Antrim, Benzie, Charlevoix, Cheboygan, Emmet, Grand Traverse and 4 more | 61 min |
| Jul 18, 12:35 AM EDT | Special Marine Warning | APX | 85 min | |
| Jul 18, 1:03 AM EDT | Severe Thunderstorm Warning | APX | Alcona, Alpena, Crawford, Montmorency, Oscoda, Otsego and 1 more | 47 min |
| Jul 18, 2:04 AM EDT | Special Marine Warning | APX | 86 min | |
| Jul 18, 2:29 AM EDT | Special Marine Warning | APX | 91 min | |
| Jul 18, 4:26 AM EDT | Special Marine Warning | APX | 73 min | |
| Jul 18, 11:48 AM EDT | Special Marine Warning | APX | 87 min |
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.