Alert archive / Maine / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 13, NWS Caribou, ME

June 29, 2012Aroostook County, Maine

NWS Caribou, ME issued this severe thunderstorm warning at Jun 29, 2012, 6:13 PM EDT for Aroostook County, Maine. It was in force for 62 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
Jun 29, 2012, 6:13 PM EDT (22:13 UTC)
Expired
Jun 29, 2012, 7:15 PM EDT
In force
62 min
Issued by
NWS Caribou, ME
Area
Storm-based polygon

County Aroostook County, ME

The radar

The Caribou radar (KCBW), 112 km from the middle of the area, began a volume at 22:16 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
Jun 29, 6:15 PM EDTTSTM WND DMGCaribou, MESCATTERED TREE DAMAGE THROUGHOUT CARIBOU.
Jun 29, 6:15 PM EDTHAIL 0.253 S Woodland, ME1 1/2 HAIL
Jun 29, 6:15 PM EDTHAIL 1.53 S Woodland, ME1 1/2 HAIL
Jun 29, 6:36 PM EDTHAIL 1.75Washburn, ME

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 12:00Z, 10.2 hours before the alert went out and 19 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 12:00Z on 2012-06-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 12:00Z on 2012-06-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 228 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1208 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
228 m²/s²
0-3 km storm-relative helicity
216 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

849 
WUUS51 KCAR 292213
SVRCAR
MEC003-292315-
/O.NEW.KCAR.SV.W.0013.120629T2213Z-120629T2315Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CARIBOU ME
613 PM EDT FRI JUN 29 2012

THE NATIONAL WEATHER SERVICE IN CARIBOU MAINE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EAST CENTRAL AROOSTOOK COUNTY IN NORTHERN MAINE...
  THIS INCLUDES THE CITIES OF...LIMESTONE...CARIBOU...

* UNTIL 715 PM EDT

* AT 607 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORMS CAPABLE OF PRODUCING GOLF BALL SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORMS WERE LOCATED OVER 
  CARIBOU AND PERHAM. THESE STORMS WERE MOVING EAST AT 25 MPH.
  
* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  PERHAM...CARIBOU...WOODLAND AND LIMESTONE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DOPPLER RADAR HAS INDICATED SOME WEAK ROTATION WITHIN THIS STORM.
WHILE NOT IMMEDIATELY LIKELY...A TORNADO MAY STILL DEVELOP. 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 4713 6788 4711 6788 4709 6781 4706 6778
      4681 6778 4676 6834 4709 6831 4716 6790
TIME...MOT...LOC 2211Z 263DEG 45KT 4695 6788

$$

HEWITT
2 follow-up statements
722 
WWUS51 KCAR 292252
SVSCAR

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CARIBOU ME
652 PM EDT FRI JUN 29 2012

MEC003-292315-
/O.CON.KCAR.SV.W.0013.000000T0000Z-120629T2315Z/
AROOSTOOK ME-
652 PM EDT FRI JUN 29 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM EDT
FOR EAST CENTRAL AROOSTOOK COUNTY...

AT 645 PM EDT...TRAINED WEATHER SPOTTERS REPORTED LARGE HAIL FROM QUARTER 
SIZE TO GOLFBALL SIZE IN WOODLAND AND CONNOR. THIS SEVERE THUNDERSTORM 
EXTENDS FROM LIMESTONE BACK INTO WASHBURN AND IS MOVING EAST AT 25 MPH AND
HAS THE CAPABILITY OF PRODUCING HAIL UP TO QUARTER SIZE WITH TORRENTIAL
RAINFALL.

AREAS TO BE AFFECTED INCLUDE...WADE...FORT FAIRFIELD AND LIMESTONE. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY! LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS.
REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING.

&&

LAT...LON 4678 6818 4696 6820 4716 6790 4713 6788
      4711 6788 4709 6781 4706 6778 4681 6778
TIME...MOT...LOC 2247Z 263DEG 45KT 4700 6722

$$

HEWITT
074 
WWUS51 KCAR 292322
SVSCAR

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CARIBOU ME
722 PM EDT FRI JUN 29 2012

MEC003-292331-
/O.EXP.KCAR.SV.W.0013.000000T0000Z-120629T2315Z/
AROOSTOOK ME-
722 PM EDT FRI JUN 29 2012

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL AROOSTOOK COUNTY
HAS EXPIRED...

THE SEVERE THUNDERSTORM THAT PRODUCED UP TO GOLFBALL SIZE HAIL HAS MOVED 
EAST OF THE AREA.
   
LAT...LON 4678 6818 4696 6820 4716 6790 4713 6788
      4711 6788 4709 6781 4706 6778 4681 6778
TIME...MOT...LOC 2252Z 263DEG 45KT 4700 6713

$$

HEWITT

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 29, 4:25 PM EDTSevere Thunderstorm WarningCARAroostook50 min
Jun 29, 5:07 PM EDTSevere Thunderstorm WarningCARAroostook, Piscataquis, Somerset53 min
Jun 29, 5:22 PM EDTSevere Thunderstorm WarningCARAroostook53 min
Jun 29, 5:30 PM EDTFlash Flood WarningCARAroostook2 hr
Jun 29, 5:56 PM EDTSevere Thunderstorm WarningCARAroostook, Penobscot, Piscataquis, Somerset64 min
Jun 29, 6:04 PM EDTFlash Flood WarningCARAroostook99 min
Jun 29, 6:24 PM EDTSevere Thunderstorm WarningCARPenobscot, Piscataquis66 min
Jun 29, 6:40 PM EDTSevere Thunderstorm WarningCARAroostook50 min
Jun 29, 6:58 PM EDTSevere Thunderstorm WarningCARAroostook, Penobscot, Piscataquis47 min
Jun 29, 7:29 PM EDTSevere Thunderstorm WarningCARAroostook19 min
Jun 29, 7:31 PM EDTSevere Thunderstorm WarningCARAroostook, Penobscot, Washington59 min

Nearby

Severe Thunderstorm Warnings in Maine, 2012Every severe thunderstorm warning in 2012

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.