Alert archive / Maine / Tornado Warnings in 2011

Tornado Warning 10, NWS Caribou, ME

July 22, 2011Aroostook County, Maine

NWS Caribou, ME issued this tornado warning at Jul 22, 2011, 8:08 PM EDT for Aroostook County, Maine. It was in force for 37 min. 1 report 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
Jul 22, 2011, 8:08 PM EDT (00:08 UTC)
Expired
Jul 22, 2011, 8:45 PM EDT
In force
37 min
Issued by
NWS Caribou, ME
Area
Storm-based polygon

County Aroostook County, ME

The radar

The Caribou radar (KCBW), 21 km from the middle of the area, began a volume at 00:10 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
Jul 22, 8:27 PM EDTTSTM WND DMG4 Nw Monticello, MELIGHTNING STRIKE AND WIND...TREE DOWN OVER CAMP SITE 4 INJURED. NOT LIFE THREATING.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Caribou, ME (KCAR), launched 00:00Z, 0.1 hours before the alert went out and 73 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, Caribou, ME at 00:00Z on 2011-07-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1389 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Caribou, ME at 00:00Z on 2011-07-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 68 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
1389 J/kg
Mixed-layer CIN
-6 J/kg
Mixed-layer LCL
800 m above ground
0-6 km bulk shear
60 kt
0-1 km storm-relative helicity
68 m²/s²
0-3 km storm-relative helicity
117 m²/s²
Significant tornado parameter
1.0
Supercell composite
3.7

Open this sounding in Storm Lab

The text

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

276 
WFUS51 KCAR 230008
TORCAR
MEC003-230045-
/O.NEW.KCAR.TO.W.0010.110723T0008Z-110723T0045Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE CARIBOU ME
808 PM EDT FRI JUL 22 2011

THE NATIONAL WEATHER SERVICE IN CARIBOU MAINE HAS ISSUED A

* TORNADO WARNING FOR...
  EAST CENTRAL AROOSTOOK COUNTY IN NORTHERN MAINE...
  THIS INCLUDES THE CITY OF HOULTON...

* UNTIL 845 PM EDT

* AT 806 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 23 MILES
  NORTHWEST OF HOULTON...OR 19 MILES SOUTH OF PRESQUE ISLE...MOVING
  SOUTHEAST AT 45 MPH.

* THE TORNADO WILL BE NEAR...
  MONTICELLO LITTLETON...HOULTON AND 8 MILES NORTH OF HODGDON BY
  845 PM EDT...

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.

PLEASE REPORT SEVERE WEATHER BY CONTACTING YOUR NEAREST LAW
ENFORCEMENT AGENCY AND ASK THEM TO RELAY YOUR REPORT TO THE NATIONAL
WEATHER SERVICE FORECAST OFFICE.

&&

LAT...LON 4597 6783 4623 6810 4640 6817 4653 6797
      4632 6777 4606 6777
TIME...MOT...LOC 0007Z 323DEG 29KT 4641 6808

$$



VJN
2 follow-up statements
731 
WWUS51 KCAR 230028
SVSCAR

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CARIBOU ME
828 PM EDT FRI JUL 22 2011

MEC003-230045-
/O.CON.KCAR.TO.W.0010.000000T0000Z-110723T0045Z/
AROOSTOOK ME-
828 PM EDT FRI JUL 22 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 845 PM EDT FOR EAST
CENTRAL AROOSTOOK COUNTY...

AT 827 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED NEAR MONTICELLO...OR 12
MILES NORTHWEST OF HOULTON...MOVING SOUTHEAST AT 35 TO 40 MPH.

THE TORNADO WILL BE NEAR...
  LITTLETON BY 835 PM EDT...
  HOULTON BY 845 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING
GOLF BALL SIZE HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS UP TO 70 MPH.

PLEASE REPORT SEVERE WEATHER BY CONTACTING YOUR NEAREST LAW
ENFORCEMENT AGENCY AND ASK THEM TO RELAY YOUR REPORT TO THE NATIONAL
WEATHER SERVICE FORECAST OFFICE.

&&

LAT...LON 4606 6777 4622 6798 4626 6801 4642 6786
      4632 6777
TIME...MOT...LOC 0028Z 323DEG 29KT 4627 6793

$$

NOUHAN
259 
WWUS51 KCAR 230045
SVSCAR

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CARIBOU ME
845 PM EDT FRI JUL 22 2011

MEC003-230054-
/O.EXP.KCAR.TO.W.0010.000000T0000Z-110723T0045Z/
AROOSTOOK ME-
845 PM EDT FRI JUL 22 2011

...THE TORNADO WARNING FOR EAST CENTRAL AROOSTOOK COUNTY WILL EXPIRE
AT 845 PM EDT...

DOPPLER RADAR HAS INDICATED THAT THE THUNDERSTORM PROMPTING THE 
TORNADO WARNING HAS WEAKENED AND MOVED EAST INTO NEW BRUNSWICK.

PLEASE REPORT SEVERE WEATHER BY CONTACTING YOUR NEAREST LAW
ENFORCEMENT AGENCY AND ASK THEM TO RELAY YOUR REPORT TO THE NATIONAL
WEATHER SERVICE FORECAST OFFICE.

LAT...LON 4606 6777 4622 6798 4626 6801 4642 6786
      4632 6777
TIME...MOT...LOC 0044Z 323DEG 29KT 4617 6782

$$

NOUHAN

The office that day

Everything else NWS Caribou, ME issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 23, 1:30 AM EDTSevere Thunderstorm WarningCARAroostook28 min
Jul 23, 3:25 PM EDTSevere Thunderstorm WarningCARAroostook50 min
Jul 23, 3:29 PM EDTSevere Thunderstorm WarningCARAroostook61 min
Jul 23, 4:02 PM EDTSevere Thunderstorm WarningCARAroostook43 min
Jul 23, 4:08 PM EDTSevere Thunderstorm WarningCARAroostook, Penobscot, Piscataquis, Somerset67 min
Jul 23, 4:40 PM EDTSevere Thunderstorm WarningCARAroostook, Penobscot, Piscataquis65 min

Nearby

Tornado Warnings in Maine, 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.