Alert archive / Michigan / Tornado Warnings in 2007

Tornado Warning 10, NWS Gaylord, MI

October 18, 2007Alcona County, Alpena County, Michigan

NWS Gaylord, MI issued this tornado warning at Oct 18, 2007, 8:38 PM EDT for Alcona County, Alpena County, Michigan. It was in force for 38 min. 4 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
Oct 18, 2007, 8:38 PM EDT (00:38 UTC)
Expired
Oct 18, 2007, 9:16 PM EDT
In force
38 min
Issued by
NWS Gaylord, MI
Area
Storm-based polygon

Counties Alcona County, MI, Alpena County, MI

The radar

The NCL Michigan radar (KAPX), 88 km from the middle of the area, began a volume at 00:41 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

TimeReportWhereRemark
Oct 18, 8:42 PM EDTTORNADO4 Wnw Curran, MISTORM SURVEY CREW CONFIRMS A SIXTH TORNADO FROM THE OUTBREAK LAST THURSDAY. CONSIDERABLE TREE DAMAGE NEAR MCCOLLUM LAKE ROAD ALONG ALCONA/OSCODA COUNTY LINE. SWIRL MARKINGS SEEN IN FIELDS. STRUCTURAL DAMAGE UNKNOWN...AS BUILDINGS ARE ON PRIVATE PROPERTY AND DI
Oct 18, 8:42 PM EDTTORNADO6 Nw Curran, MISTORM SURVEY CREW CONFIRMS A SIXTH TORNADO FROM THE OUTBREAK LAST THURSDAY. THE TORNADO IS RATED EF1 WITH WINDS UP TO 105 MPH. CONSIDERABLE TREE DAMAGE NEAR MCCOLLUM LAKE ROAD ALONG ALCONA/OSCODA COUNTY LINE. SWIRL MARKINGS SEEN IN FIELDS. STRUCTURAL DAMAGE UN
Oct 18, 8:55 PM EDTTSTM WND DMG10 W Hubbard Lake, MITREES DOWN
Oct 18, 9:00 PM EDTTORNADO5 Nnw Hubbard Lake, MIEF2 WITH WINDS UP TO 110 MPH.

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.

IssuedProductOfficeLasted
Oct 18, 4:23 PM EDTTornado WatchSPC8 hr

The nearest sounding before it

Alpena, MI (KAPX), launched 00:00Z, 0.6 hours before the alert went out and 100 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.

Skew-T log-pSkew-T log-p diagram, Alpena, MI at 00:00Z on 2007-10-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 764 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Alpena, MI at 00:00Z on 2007-10-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 456 square meters per square second.1939587897117Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
764 J/kg
Mixed-layer CIN
-20 J/kg
Mixed-layer LCL
966 m above ground
0-6 km bulk shear
94 kt
0-1 km storm-relative helicity
456 m²/s²
0-3 km storm-relative helicity
453 m²/s²
Significant tornado parameter
2.1
Supercell composite
9.6

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WFUS53 KAPX 190038
TORAPX
MIC001-007-190145-
/O.NEW.KAPX.TO.W.0010.071019T0038Z-071019T0145Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE GAYLORD MI
838 PM EDT THU OCT 18 2007

THE NATIONAL WEATHER SERVICE IN GAYLORD HAS ISSUED A

* TORNADO WARNING FOR...
  ALCONA COUNTY IN NORTHERN LOWER MICHIGAN...
  ALPENA COUNTY IN NORTHERN LOWER MICHIGAN...

* UNTIL 945 PM EDT

* AT 838 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS STORM HAS 
  HAD A HISTORY OF PRODUCING STRONG ROTATION. A POSSIBLE NEW TORNADO 
  MAY BE FORMING JUST EAST OF FAIRVIEW AND WAS TRACKING MAINLY       
  TOWARD CURRAN AND HUBBARD LAKE AT 45 MPH.

* THIS STORM WILL BE NEAR...
  CURRAN AROUND 845 PM EDT...
  HUBBARD LAKE AROUND 900 PM EDT...
  THE TOWN OF HUBBARD LAKE AROUND 905 PM EDT...

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

LAT...LON 4477 8329 4463 8386 4463 8390 4489 8389
      4503 8361 4492 8344
TIME...MOT...LOC 0038Z 243DEG 39KT 4474 8391

$$
3 follow-up statements
000 
WWUS34 KAPX 190057
SVSAPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GAYLORD MI
858 PM EDT THU OCT 18 2007

MIC001-007-190145-
/O.CON.KAPX.TO.W.0010.000000T0000Z-071019T0145Z/
ALCONA MI-ALPENA MI-
858 PM EDT THU OCT 18 2007

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 945 PM EDT FOR ALPENA
AND ALCONA COUNTIES...

AT 853 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS
STORM WAS LOCATED 9 MILES WEST OF THE TOWN OF HUBBARD LAKE...MOVING
NORTHEAST AT 40 MPH.

* LOCATIONS IMPACTED INCLUDE...
  THE TOWN OF HUBBARD LAKE...
  SPRUCE...
  OSSINEKE...

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

LAT...LON 4481 8336 4469 8388 4489 8389 4503 8361
      4492 8344
TIME...MOT...LOC 0058Z 236DEG 38KT 4489 8370

$$
000 
WWUS34 KAPX 190103
SVSAPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GAYLORD MI
904 PM EDT THU OCT 18 2007

MIC001-069-129-135-190114-
/O.CAN.KAPX.SV.W.0072.000000T0000Z-071019T0115Z/
ALCONA MI-OSCODA MI-IOSCO MI-OGEMAW MI-
904 PM EDT THU OCT 18 2007

...THE SEVERE THUNDERSTORM WARNING FOR OGEMAW...IOSCO...OSCODA AND
ALCONA COUNTIES IS CANCELLED...

AT 904 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THAT
THE STORM WHICH PROMPTED THE SEVERE THUNDERSTORM WARNING HAS
WEAKENED. THE WARNING HAS THEREFORE BEEN CANCELLED.

A TORNADO WATCH REMAINS IN EFFECT FOR THE AREA. THUNDERSTORMS CAN AND
OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING.
IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY
IN A STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.

LAT...LON 4417 8397 4417 8402 4427 8423 4426 8422
      4431 8425 4474 8393 4451 8347
TIME...MOT...LOC 0104Z 213DEG 51KT 4463 8383

$$
000 
WWUS34 KAPX 190116
SVSAPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GAYLORD MI
916 PM EDT THU OCT 18 2007

MIC001-007-190126-
/O.CAN.KAPX.TO.W.0010.000000T0000Z-071019T0145Z/
ALCONA MI-ALPENA MI-
916 PM EDT THU OCT 18 2007

...THE TORNADO WARNING FOR ALPENA AND ALCONA COUNTIES IS CANCELLED...

AT 916 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THAT
THE STORM WHICH PROMPTED THE TORNADO WARNING HAS WEAKENED AND EXITED
THE AREA. THE WARNING HAS THEREFORE BEEN CANCELLED.

A TORNADO WATCH REMAINS IN EFFECT FOR THE AREA. THUNDERSTORMS CAN AND
OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING.
IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY
IN A STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.

LAT...LON 4481 8368 4493 8376 4503 8361 4492 8344
      4489 8342 4484 8338 4484 8339
TIME...MOT...LOC 0116Z 236DEG 38KT 4499 8347

$$

The office that day

Everything else NWS Gaylord, MI issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Oct 18, 8:19 PM EDTSevere Thunderstorm WarningAPXAlcona, Arenac, Gladwin, Iosco, Ogemaw, Oscoda and 1 more44 min
Oct 18, 8:19 PM EDTTornado WarningAPXAlcona, Crawford, Oscoda27 min
Oct 18, 8:39 PM EDTSevere Thunderstorm WarningAPXAntrim, Charlevoix, Kalkaska, Otsego66 min
Oct 18, 8:42 PM EDTSevere Thunderstorm WarningAPXAlpena, Montmorency33 min
Oct 18, 9:21 PM EDTSevere Thunderstorm WarningAPXCheboygan, Montmorency, Otsego, Presque Isle25 min
Oct 18, 9:23 PM EDTSevere Thunderstorm WarningAPXKalkaska, Missaukee, Wexford41 min
Oct 18, 9:32 PM EDTSevere Thunderstorm WarningAPXArenac, Gladwin, Iosco, Ogemaw, Roscommon58 min
Oct 18, 9:37 PM EDTSevere Thunderstorm WarningAPXAntrim, Crawford, Kalkaska, Otsego51 min
Oct 18, 10:09 PM EDTSevere Thunderstorm WarningAPXCheboygan, Otsego51 min
Oct 18, 10:25 PM EDTSevere Thunderstorm WarningAPXArenac, Gladwin, Iosco, Ogemaw65 min
Oct 18, 10:32 PM EDTSpecial Marine WarningAPX40 min
Oct 18, 11:10 PM EDTSevere Thunderstorm WarningAPXAlcona, Alpena, Iosco37 min
Oct 18, 11:17 PM EDTSpecial Marine WarningAPX54 min
Oct 19, 4:30 AM EDTWind AdvisoryAPXAntrim, Benzie, Emmet, Leelanau, Manistee16 hr

Nearby

Tornado Warnings in Michigan, 2007Every tornado warning in 2007Tornadoes in 2007

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.