Alert archive / Michigan / Tornado Warnings in 2011
Tornado Warning 1, NWS Gaylord, MI
NWS Gaylord, MI issued this tornado warning at Apr 10, 2011, 8:07 PM EDT for Alcona County, Michigan. It was in force for 38 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, 8:07 PM EDT (00:07 UTC)
- Expired
- Apr 10, 2011, 8:45 PM EDT
- In force
- 38 min
- Issued by
- NWS Gaylord, MI
- Area
- Storm-based polygon
County Alcona County, MI
The radar
The NCL Michigan radar (KAPX), 92 km from the middle of the area, began a volume at 00:07 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 00:00Z, 0.1 hours before the alert went out and 104 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
- 689 J/kg
- Mixed-layer CIN
- -94 J/kg
- Mixed-layer LCL
- 550 m above ground
- 0-6 km bulk shear
- 80 kt
- 0-1 km storm-relative helicity
- 289 m²/s²
- 0-3 km storm-relative helicity
- 541 m²/s²
- Significant tornado parameter
- -0.1
- Supercell composite
- -0.6
The text
As transmitted, in the capitals the NWS used until 2016.
126
WFUS53 KAPX 110007
TORAPX
MIC001-110045-
/O.NEW.KAPX.TO.W.0001.110411T0007Z-110411T0045Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE GAYLORD MI
807 PM EDT SUN APR 10 2011
THE NATIONAL WEATHER SERVICE IN GAYLORD HAS ISSUED A
* TORNADO WARNING FOR...
CENTRAL ALCONA COUNTY IN NORTHERN LOWER MICHIGAN...
* UNTIL 845 PM EDT
* AT 803 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
STORM WAS LOCATED NEAR CURRAN...OR 13 MILES NORTHWEST OF GLENNIE...
AND MOVING EAST AT 50 MPH.
* LOCATIONS IMPACTED INCLUDE...
HUBBARD LAKE...BARTON CITY...LINCOLN...MIKADO AND MILEN TOWNSHIP.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS TORNADO WARNING REPLACES THE SEVERE THUNDERSTORM WARNING THAT
WAS IN EFFECT FOR THE SAME AREA. GO TO A BASEMENT OR SMALL INTERIOR
ROOM ON THE LOWEST FLOOR!
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 4454 8331 4466 8389 4476 8389 4483 8387
4478 8332
TIME...MOT...LOC 0007Z 276DEG 44KT 4473 8376
$$3 follow-up statements
251 WWUS34 KAPX 110015 SVSAPX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE GAYLORD MI 815 PM EDT SUN APR 10 2011 MIC001-110045- /O.CON.KAPX.TO.W.0001.000000T0000Z-110411T0045Z/ ALCONA MI- 815 PM EDT SUN APR 10 2011 ...A TORNADO WARNING REMAINS IN EFFECT FOR CENTRAL ALCONA COUNTY UNTIL 845 PM EDT... AT 811 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED 5 MILES NORTHWEST OF BARTON CITY...OR 10 MILES NORTH OF GLENNIE...MOVING EAST AT 50 MPH. LOCATIONS IMPACTED INCLUDE... BARTON CITY AND LINCOLN. PRECAUTIONARY/PREPAREDNESS ACTIONS... TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS. && LAT...LON 4468 8383 4480 8370 4478 8332 4454 8331 TIME...MOT...LOC 0015Z 276DEG 44KT 4471 8362 WIND...HAIL <50MPH <.50IN $$
427 WWUS34 KAPX 110030 SVSAPX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE GAYLORD MI 830 PM EDT SUN APR 10 2011 MIC001-110045- /O.CON.KAPX.TO.W.0001.000000T0000Z-110411T0045Z/ ALCONA MI- 830 PM EDT SUN APR 10 2011 ...A TORNADO WARNING REMAINS IN EFFECT FOR EAST CENTRAL ALCONA COUNTY UNTIL 845 PM EDT... AT 828 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED NEAR LINCOLN...OR 5 MILES NORTHWEST OF HARRISVILLE...MOVING EAST AT 50 MPH. LOCATIONS IMPACTED INCLUDE... MAINLY RURAL AREAS OF EASTERN ALCONA COUNTY. 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 4459 8349 4478 8341 4477 8332 4454 8331 TIME...MOT...LOC 0030Z 276DEG 44KT 4469 8336 WIND...HAIL <50MPH <.50IN $$
197 WWUS34 KAPX 110039 SVSAPX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE GAYLORD MI 839 PM EDT SUN APR 10 2011 MIC001-110048- /O.EXP.KAPX.TO.W.0001.000000T0000Z-110411T0045Z/ ALCONA MI- 839 PM EDT SUN APR 10 2011 ...THE TORNADO WARNING FOR EAST CENTRAL ALCONA COUNTY WILL EXPIRE AT 845 PM EDT... THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED AREA...HOWEVER LARGE HAIL IS STILL POSSIBLE WITH THIS THUNDERSTORM THROUGH 850 PM. A TORNADO WATCH REMAINS IN EFFECT UNTIL 2 AM EDT...AND ADDITIONAL SEVERE THUNDERSTORMS MAY REDEVELOP THROUGH THE LATE EVENING AND EARLY OVERNIGHT HOURS. LAT...LON 4459 8349 4478 8341 4477 8332 4454 8331 TIME...MOT...LOC 0038Z 276DEG 44KT 4467 8322 WIND...HAIL <50MPH <.50IN $$ LAWRENCE
The office that day
Everything else NWS Gaylord, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 10, 8:13 PM EDT | Severe Thunderstorm Warning | APX | Alcona, Alpena | 32 min |
| Apr 10, 8:36 PM EDT | River Flood Warning | APX | Arenac | 35 hr |
| Apr 10, 10:20 PM EDT | Special Marine Warning | APX | 25 min | |
| Apr 10, 11:01 PM EDT | Special Marine Warning | APX | 59 min | |
| Apr 10, 11:57 PM EDT | Severe Thunderstorm Warning | APX | Benzie, Manistee | 34 min |
| Apr 11, 12:00 AM EDT | Special Marine Warning | APX | 15 min | |
| Apr 11, 12:58 AM EDT | Severe Thunderstorm Warning | APX | Crawford, Kalkaska | 47 min |
| Apr 11, 3:03 AM EDT | Gale Warning | APX | 19 hr |
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.