Alert archive / Michigan / Tornado Warnings in 2011
Tornado Warning 3, NWS Gaylord, MI
NWS Gaylord, MI issued this tornado warning at Aug 21, 2011, 12:57 PM EDT for Alcona County, Iosco County, Michigan. It was in force for 48 min. 9 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
- Aug 21, 2011, 12:57 PM EDT (16:57 UTC)
- Expired
- Aug 21, 2011, 1:45 PM EDT
- In force
- 48 min
- Issued by
- NWS Gaylord, MI
- Area
- Storm-based polygon
Counties Alcona County, MI, Iosco County, MI
The radar
The NCL Michigan radar (KAPX), 108 km from the middle of the area, began a volume at 17:01 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 |
|---|---|---|---|
| Aug 21, 1:21 PM EDT | HAIL 1.75 | Barton City, MI | |
| Aug 21, 1:30 PM EDT | HAIL 0.5 | 4 Sse Lincoln, MI | HAIL PILED UP TO ONE AND A HALF INCHES ON DRIVEWAY |
| Aug 21, 1:30 PM EDT | HAIL 0.75 | 4 W Harrisville, MI | |
| Aug 21, 1:30 PM EDT | HAIL 0.88 | 3 S Lincoln, MI | |
| Aug 21, 1:30 PM EDT | HAIL 1 | 2 Se Mikado, MI | MOSTLY PEA SIZE BUT MAX IS 1 INCH. |
| Aug 21, 1:30 PM EDT | HAIL 1.75 | 7 W Harrisville, MI | |
| Aug 21, 1:40 PM EDT | HAIL 1.75 | 4 E Mikado, MI | TIME ESTIMATED FROM RADAR |
| Aug 21, 1:45 PM EDT | HAIL 2 | 5 Ese Mikado, MI | SPOTTER TRAVELED TO ALCONA IOSCO COUNTY LINE AND FOUND MAX HAIL OF 1 TO 2 INCHES ON US ROUTE 23. |
| Aug 21, 1:54 PM EDT | HAIL 0.25 | Oscoda, MI | WIND ESTIMATED 45 MPH. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Alpena, MI (KAPX), launched 12:00Z, 5.0 hours before the alert went out and 97 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
- 76 J/kg
- Mixed-layer CIN
- -25 J/kg
- Mixed-layer LCL
- 1325 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 7 m²/s²
- 0-3 km storm-relative helicity
- 76 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
029
WFUS53 KAPX 211657
TORAPX
MIC001-069-211745-
/O.NEW.KAPX.TO.W.0003.110821T1657Z-110821T1745Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE GAYLORD MI
1257 PM EDT SUN AUG 21 2011
THE NATIONAL WEATHER SERVICE IN GAYLORD HAS ISSUED A
* TORNADO WARNING FOR...
ALCONA COUNTY IN NORTHERN LOWER MICHIGAN...
NORTHEASTERN IOSCO COUNTY IN NORTHERN LOWER MICHIGAN...
* UNTIL 145 PM EDT
* AT 1256 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
STORM WAS LOCATED 5 MILES NORTHEAST OF CURRAN...OR 11 MILES
SOUTHWEST OF THE TOWN OF HUBBARD LAKE...AND MOVING SOUTHEAST AT 25
MPH.
* LOCATIONS IMPACTED INCLUDE...
HARRISVILLE...OSCODA...AU SABLE...HUBBARD LAKE...BARTON CITY...
LINCOLN...MIKADO...WURTSMITH AIRFIELD AND MILEN TOWNSHIP.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.
TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN GAYLORD.
&&
LAT...LON 4461 8330 4453 8330 4446 8332 4440 8331
4438 8332 4438 8333 4474 8388 4486 8375
4486 8368 4467 8327
TIME...MOT...LOC 1658Z 308DEG 22KT 4475 8370
$$
HALBLAUB4 follow-up statements
323
WWUS34 KAPX 211711
SVSAPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GAYLORD MI
111 PM EDT SUN AUG 21 2011
MIC001-069-211745-
/O.CON.KAPX.TO.W.0003.000000T0000Z-110821T1745Z/
ALCONA MI-IOSCO MI-
111 PM EDT SUN AUG 21 2011
...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHEASTERN IOSCO AND
ALCONA COUNTIES UNTIL 145 PM EDT...
AT 110 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
STORM WAS LOCATED NEAR BARTON CITY...OR 10 MILES NORTHEAST OF
GLENNIE...MOVING SOUTHEAST AT 25 MPH.
LOCATIONS IMPACTED INCLUDE...
HARRISVILLE...OSCODA...AU SABLE...BARTON CITY...LINCOLN...MIKADO
AND WURTSMITH AIRFIELD.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.
&&
LAT...LON 4467 8376 4479 8366 4483 8362 4467 8327
4461 8330 4453 8330 4446 8332 4440 8331
4438 8332 4438 8333
TIME...MOT...LOC 1711Z 309DEG 23KT 4470 8361
WIND...HAIL <50MPH <.50IN
$$
HALBLAUB935
WWUS34 KAPX 211725
SVSAPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GAYLORD MI
125 PM EDT SUN AUG 21 2011
MIC001-069-211745-
/O.CON.KAPX.TO.W.0003.000000T0000Z-110821T1745Z/
ALCONA MI-IOSCO MI-
125 PM EDT SUN AUG 21 2011
...A TORNADO WARNING REMAINS IN EFFECT FOR EXTREME NORTHEASTERN IOSCO
AND SOUTHEASTERN ALCONA COUNTIES UNTIL 145 PM EDT...
AT 124 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
STORM WAS LOCATED 6 MILES SOUTHEAST OF BARTON CITY...OR 10 MILES WEST
OF HARRISVILLE...MOVING SOUTHEAST AT 35 MPH.
LOCATIONS IMPACTED INCLUDE...
HARRISVILLE AND MIKADO.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.
&&
LAT...LON 4446 8332 4445 8334 4459 8358 4471 8355
4475 8345 4467 8327 4461 8330 4453 8330
TIME...MOT...LOC 1724Z 305DEG 29KT 4461 8346
WIND...HAIL <50MPH <.50IN
$$
HALBLAUB204
WWUS34 KAPX 211736
SVSAPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GAYLORD MI
136 PM EDT SUN AUG 21 2011
MIC001-069-211745-
/O.CON.KAPX.TO.W.0003.000000T0000Z-110821T1745Z/
ALCONA MI-IOSCO MI-
136 PM EDT SUN AUG 21 2011
...A TORNADO WARNING REMAINS IN EFFECT FOR EXTREME NORTHEASTERN IOSCO
AND SOUTHEASTERN ALCONA COUNTIES UNTIL 145 PM EDT...
AT 133 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
STORM WAS LOCATED NEAR MIKADO...OR 7 MILES SOUTHWEST OF
HARRISVILLE...MOVING SOUTHEAST AT 35 MPH.
LOCATIONS IMPACTED INCLUDE...
MAINLY RURAL AREAS OFEXTREME NORTHEASTERN IOSCO AND SOUTHEASTERN
ALCONA COUNTIES.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.
&&
LAT...LON 4446 8332 4445 8334 4459 8358 4471 8355
4475 8345 4467 8327 4461 8330 4453 8330
TIME...MOT...LOC 1737Z 305DEG 29KT 4455 8334
WIND...HAIL <50MPH <.50IN
$$
HALBLAUB434
WWUS34 KAPX 211745
SVSAPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GAYLORD MI
145 PM EDT SUN AUG 21 2011
MIC001-069-211755-
/O.EXP.KAPX.TO.W.0003.000000T0000Z-110821T1745Z/
ALCONA MI-IOSCO MI-
145 PM EDT SUN AUG 21 2011
...THE TORNADO WARNING FOR EXTREME NORTHEASTERN IOSCO AND
SOUTHEASTERN ALCONA COUNTIES HAS EXPIRED...
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA. HOWEVER...OTHER NON-SEVERE THUNDERSTORMS WILL MOVE THROUGH THE
AREA OVER THE NEXT HOUR.
TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN GAYLORD.
LAT...LON 4446 8332 4445 8334 4459 8358 4471 8355
4475 8345 4467 8327 4461 8330 4453 8330
TIME...MOT...LOC 1745Z 305DEG 29KT 4451 8327
WIND...HAIL <50MPH <.50IN
$$
HALBLAUBThe office that day
Everything else NWS Gaylord, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 21, 12:13 AM EDT | Special Marine Warning | APX | 47 min | |
| Aug 21, 10:33 AM EDT | Special Marine Warning | APX | 57 min | |
| Aug 21, 10:56 AM EDT | Small Craft Advisory | APX | 18 hr | |
| Aug 21, 1:19 PM EDT | Special Marine Warning | APX | 86 min | |
| Aug 21, 2:15 PM EDT | Special Marine Warning | APX | 40 min | |
| Aug 21, 4:10 PM EDT | Special Marine Warning | APX | 60 min | |
| Aug 21, 4:10 PM EDT | Severe Thunderstorm Warning | APX | Alpena, Presque Isle | 38 min |
| Aug 21, 5:23 PM EDT | Special Marine Warning | APX | 80 min |
Nearby
Tornado Warnings in Michigan, 2011Every tornado warning in 2011Tornadoes 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.