Alert archive / Michigan / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 9, NWS Gaylord, MI
NWS Gaylord, MI issued this severe thunderstorm warning at Apr 10, 2011, 7:54 PM EDT for Alcona County, Oscoda County, Michigan. It was in force for 66 min. 3 reports 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
- Apr 10, 2011, 7:54 PM EDT (23:54 UTC)
- Expired
- Apr 10, 2011, 9:00 PM EDT
- In force
- 66 min
- Issued by
- NWS Gaylord, MI
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Alcona County, MI, Oscoda County, MI
The radar
The NCL Michigan radar (KAPX), 101 km from the middle of the area, began a volume at 23:54 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 |
|---|---|---|---|
| Apr 10, 8:17 PM EDT | HAIL 0.62 | Hubbard Lake, MI | |
| Apr 10, 8:25 PM EDT | HAIL 1 | 3 N Lincoln, MI | HAIL COVERED THE GROUND |
| Apr 10, 8:30 PM EDT | HAIL 0.5 | Hubbard Lake, MI |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 10, 6:20 PM EDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Alpena, MI (KAPX), launched 12:00Z, 11.9 hours before the alert went out and 94 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 755 m above ground
- 0-6 km bulk shear
- 77 kt
- 0-1 km storm-relative helicity
- 213 m²/s²
- 0-3 km storm-relative helicity
- 335 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
The text
As transmitted, in the capitals the NWS used until 2016.
990
WUUS53 KAPX 102354
SVRAPX
MIC001-135-110100-
/O.NEW.KAPX.SV.W.0009.110410T2354Z-110411T0100Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GAYLORD MI
754 PM EDT SUN APR 10 2011
THE NATIONAL WEATHER SERVICE IN GAYLORD HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
ALCONA COUNTY IN NORTHERN LOWER MICHIGAN...
EASTERN OSCODA COUNTY IN NORTHERN LOWER MICHIGAN...
* UNTIL 900 PM EDT
* AT 749 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
COMINS...OR 13 MILES NORTHEAST OF MIO...AND MOVING EAST AT 60 MPH.
THIS STORM HAS ALREADY PRODUCED A WIND GUST TO 50 MPH 3.5 MILES WEST
OF ATLANTA...AND HAIL TO NICKEL SIZE IN LEWISTON.
* LOCATIONS IMPACTED INCLUDE...
HARRISVILLE...CURRAN...BARTON CITY...HUBBARD LAKE...MIKADO...
LINCOLN...HARRISVILLE STATE PARK...MITCHELL TOWNSHIP AND MILEN
TOWNSHIP.
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.
&&
A TORNADO WATCH REMAINS IN EFFECT UNTIL 200 AM EDT MONDAY MORNING FOR
NORTHERN LOWER MICHIGAN.
LAT...LON 4464 8329 4462 8331 4455 8331 4460 8420
4486 8394 4486 8373 4479 8328 4475 8329
4472 8327 4468 8327
TIME...MOT...LOC 2353Z 260DEG 52KT 4483 8389
WIND...HAIL 60MPH 1.00IN
$$4 follow-up statements
621
WWUS34 KAPX 110023
SVSAPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GAYLORD MI
823 PM EDT SUN APR 10 2011
MIC135-110033-
/O.CAN.KAPX.SV.W.0009.000000T0000Z-110411T0100Z/
OSCODA MI-
823 PM EDT SUN APR 10 2011
...THE SEVERE THUNDERSTORM WARNING FOR EASTERN OSCODA COUNTY IS
CANCELLED...
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.
LAT...LON 4462 8331 4455 8331 4458 8389 4486 8388
4486 8371 4479 8329 4468 8327
TIME...MOT...LOC 0023Z 260DEG 52KT 4490 8329
WIND...HAIL <50MPH <.50IN
$$
MIC001-110100-
/O.CON.KAPX.SV.W.0009.000000T0000Z-110411T0100Z/
ALCONA MI-
823 PM EDT SUN APR 10 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR ALCONA COUNTY
UNTIL 900 PM EDT...
AT 820 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
OSSINEKE...MOVING EAST AT 60 MPH. QUARTER SIZE HAIL MAY ALSO
ACCOMPANY THESE DAMAGING WINDS.
LOCATIONS IMPACTED INCLUDE...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH NOT IMMEDIATELY
LIKELY...IF A TORNADO IS SPOTTED ACT QUICKLY AND MOVE TO A PLACE OF
SAFETY INSIDE A STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL
INTERIOR ROOM.
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 4462 8331 4455 8331 4458 8389 4486 8388
4486 8371 4479 8329 4468 8327
TIME...MOT...LOC 0023Z 260DEG 52KT 4490 8329
WIND...HAIL 60MPH 1.00IN
$$836
WWUS34 KAPX 110035
SVSAPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GAYLORD MI
835 PM EDT SUN APR 10 2011
MIC001-110100-
/O.CON.KAPX.SV.W.0009.000000T0000Z-110411T0100Z/
ALCONA MI-
835 PM EDT SUN APR 10 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR ALCONA COUNTY
UNTIL 900 PM EDT...
AT 833 PM EDT...TRAINED WEATHER SPOTTERS REPORTED A LINE OF SEVERE
THUNDERSTORMS PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN
EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
FROM BLACK RIVER TO HARRISVILLE TO HARRISVILLE STATE PARK...MOVING
EAST AT 60 MPH AND MOVING OFFSHORE. AN ADDITIONAL LINE OF STORMS
WILL MOVE ACROSS THE WESTERN PORTIONS OF ALCONA COUNTY THROUGH 9 PM
EDT AND MAY PRODUCE HAIL THE SIZE OF QUARTERS.
LOCATIONS IMPACTED INCLUDE...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH NOT IMMEDIATELY
LIKELY...IF A TORNADO IS SPOTTED ACT QUICKLY AND MOVE TO A PLACE OF
SAFETY INSIDE A STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL
INTERIOR ROOM.
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.
&&
LAT...LON 4462 8331 4455 8331 4458 8389 4486 8388
4486 8371 4479 8329 4468 8327
TIME...MOT...LOC 0034Z 278DEG 51KT 4481 8320 4469 8324
4459 8332
WIND...HAIL 60MPH 1.00IN
$$209
WWUS34 KAPX 110050
SVSAPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GAYLORD MI
850 PM EDT SUN APR 10 2011
MIC001-110100-
/O.CON.KAPX.SV.W.0009.000000T0000Z-110411T0100Z/
ALCONA MI-
850 PM EDT SUN APR 10 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR ALCONA COUNTY
UNTIL 900 PM EDT...
AT 845 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
NEW LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
HAIL. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM HUBBARD
LAKE TO BARTON CITY TO 5 MILES SOUTHWEST OF BARTON CITY...MOVING
EAST AT 60 MPH. THE INITIAL LINE OF STORMS THAT PROMPTED THE WARNING
HAS MOVED OFFSHORE.
LOCATIONS IMPACTED INCLUDE...
HARRISVILLE...LINCOLN AND MIKADO.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH NOT IMMEDIATELY
LIKELY...IF A TORNADO IS SPOTTED ACT QUICKLY AND MOVE TO A PLACE OF
SAFETY INSIDE A STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL
INTERIOR ROOM.
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 4462 8331 4455 8331 4458 8389 4486 8388
4486 8371 4479 8329 4468 8327
TIME...MOT...LOC 0049Z 276DEG 54KT 4482 8346 4472 8351
4464 8361
WIND...HAIL <50MPH 1.00IN
$$869
WWUS34 KAPX 110100
SVSAPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GAYLORD MI
900 PM EDT SUN APR 10 2011
MIC001-110110-
/O.EXP.KAPX.SV.W.0009.000000T0000Z-110411T0100Z/
ALCONA MI-
900 PM EDT SUN APR 10 2011
...THE SEVERE THUNDERSTORM WARNING FOR ALCONA COUNTY HAS EXPIRED...
THE LINE OF STORMS WHICH PROMPTED THE WARNING HAVE WEAKENED BELOW
SEVERE LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR
PROPERTY...HOWEVER SMALL HAIL IS STILL POSSIBLE WITH THESE
THUNDERSTORMS.
IN ADDITION...STRONG THUNDERSTORMS MAY REDEVELOP...AND A TORNADO
WATCH REMAINS IN EFFECT UNTIL 2 AM EDT.
LAT...LON 4462 8331 4455 8331 4458 8389 4486 8388
4486 8371 4479 8329 4468 8327
TIME...MOT...LOC 0100Z 276DEG 54KT 4480 8323 4470 8328
4462 8338
WIND...HAIL <50MPH <.50IN
$$The office that day
Everything else NWS Gaylord, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 10, 4:23 AM EDT | Severe Thunderstorm Warning | APX | Benzie, Grand Traverse, Leelanau, Manistee, Wexford | 22 min |
| Apr 10, 4:45 AM EDT | Severe Thunderstorm Warning | APX | Benzie, Grand Traverse, Kalkaska, Manistee, Wexford | 32 min |
| Apr 10, 5:01 AM EDT | Special Marine Warning | APX | 44 min | |
| Apr 10, 5:56 AM EDT | Severe Thunderstorm Warning | APX | Antrim, Benzie, Grand Traverse, Kalkaska, Manistee, Wexford | 49 min |
| Apr 10, 6:20 AM EDT | Severe Thunderstorm Warning | APX | Crawford, Kalkaska, Missaukee, Roscommon, Wexford | 55 min |
| Apr 10, 7:34 AM EDT | Special Marine Warning | APX | 86 min | |
| Apr 10, 3:55 PM EDT | Gale Watch | APX | 11 hr | |
| Apr 10, 5:34 PM EDT | Special Marine Warning | APX | 56 min | |
| Apr 10, 6:24 PM EDT | Severe Thunderstorm Warning | APX | Benzie, Leelanau | 44 min |
| Apr 10, 6:51 PM EDT | Special Marine Warning | APX | 24 min | |
| Apr 10, 6:55 PM EDT | Severe Thunderstorm Warning | APX | Antrim, Charlevoix, Grand Traverse, Leelanau | 22 min |
| Apr 10, 7:15 PM EDT | Severe Thunderstorm Warning | APX | Alcona, Alpena, Montmorency | 60 min |
| Apr 10, 7:27 PM EDT | Severe Thunderstorm Warning | APX | Crawford, Montmorency, Oscoda, Otsego | 36 min |
| Apr 10, 7:56 PM EDT | Special Marine Warning | APX | 109 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.