Alert archive / Maine / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 21, NWS Gray, ME

June 26, 2009Franklin County, Oxford County, Maine

NWS Gray, ME issued this severe thunderstorm warning at Jun 26, 2009, 12:41 PM EDT for Franklin County, Oxford County, Maine. It was in force for 49 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jun 26, 2009, 12:41 PM EDT (16:41 UTC)
Expired: Jun 26, 2009, 1:30 PM EDT
In force: 49 min
Issued by: NWS Gray, ME
Area: Storm-based polygon

Counties Franklin County, ME, Oxford County, ME

The radar

The Portland,ME radar (KGYX), 158 km from the middle of the area, began a volume at 16:42 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 26, 12:13 PM EDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Gray, ME (KGYX), launched 12:00Z, 4.7 hours before the alert went out and 159 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 457 J/kg
Mixed-layer CIN: -90 J/kg
Mixed-layer LCL: 505 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 70 m²/s²
0-3 km storm-relative helicity: 94 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.2

Open this sounding in Storm Lab

The text

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

000 
WUUS51 KGYX 261641
SVRGYX
MEC007-017-261730-
/O.NEW.KGYX.SV.W.0021.090626T1641Z-090626T1730Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GRAY ME
1241 PM EDT FRI JUN 26 2009

THE NATIONAL WEATHER SERVICE IN GRAY MAINE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN OXFORD COUNTY IN WESTERN MAINE...
  NORTHWESTERN FRANKLIN COUNTY IN WESTERN MAINE...

* UNTIL 130 PM EDT

* AT 1239 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 13
  MILES NORTHWEST OF TIM POND...OR 9 MILES SOUTH OF COBURN GORE...AND
  MOVING EAST AT 10 MPH.

* SOME LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO       
  OXBOW...SEVEN PONDS AND TIM POND.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

PLEASE REPORT HAIL OR STRONG WINDS TO THE NATIONAL WEATHER SERVICE BY
CALLING TOLL FREE...1-877-633-6772...WHEN YOU CAN DO SO SAFELY.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM EDT FRIDAY
EVENING FOR SOUTHWESTERN MAINE AND NORTHERN NEW HAMPSHIRE.

&&

LAT...LON 4516 7058 4519 7098 4530 7093 4530 7091
      4524 7087 4529 7085 4530 7084 4533 7084
      4538 7051
TIME...MOT...LOC 1641Z 269DEG 10KT 4525 7086

$$

MC

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 26, 12:34 AM EDT	Severe Thunderstorm Warning	GYX	Franklin, Oxford	41 min
Jun 26, 6:22 AM EDT	Severe Thunderstorm Warning	GYX	York	23 min
Jun 26, 6:34 AM EDT	Special Marine Warning	GYX		56 min
Jun 26, 7:10 AM EDT	Severe Thunderstorm Warning	GYX	Cumberland, York	25 min
Jun 26, 12:05 PM EDT	Severe Thunderstorm Warning	GYX	Somerset	55 min
Jun 26, 12:12 PM EDT	Severe Thunderstorm Warning	GYX	Franklin, Oxford	33 min
Jun 26, 12:54 PM EDT	Severe Thunderstorm Warning	GYX	Somerset	51 min
Jun 26, 1:03 PM EDT	Severe Thunderstorm Warning	GYX	Oxford	42 min
Jun 26, 1:34 PM EDT	Severe Thunderstorm Warning	GYX	Somerset	41 min
Jun 26, 1:41 PM EDT	Severe Thunderstorm Warning	GYX	Oxford	49 min
Jun 26, 1:54 PM EDT	Severe Thunderstorm Warning	GYX	Oxford	51 min
Jun 26, 2:14 PM EDT	Severe Thunderstorm Warning	GYX	Franklin, Somerset	46 min
Jun 26, 2:18 PM EDT	Flash Flood Warning	GYX	Somerset	3 hr
Jun 26, 2:27 PM EDT	Severe Thunderstorm Warning	GYX	Oxford	48 min
Jun 26, 2:39 PM EDT	Severe Thunderstorm Warning	GYX	York	41 min
Jun 26, 2:40 PM EDT	Severe Thunderstorm Warning	GYX	Franklin	50 min
Jun 26, 2:44 PM EDT	Severe Thunderstorm Warning	GYX	Oxford	46 min
Jun 26, 2:48 PM EDT	Severe Thunderstorm Warning	GYX	Oxford	42 min
Jun 26, 3:00 PM EDT	Severe Thunderstorm Warning	GYX	York	38 min
Jun 26, 3:07 PM EDT	Areal Flood Advisory	GYX	Franklin	3 hr
Jun 26, 3:26 PM EDT	Severe Thunderstorm Warning	GYX	Franklin, Oxford, Somerset	64 min
Jun 26, 3:27 PM EDT	Flash Flood Warning	GYX	Franklin	3 hr
Jun 26, 3:28 PM EDT	Severe Thunderstorm Warning	GYX	Oxford	47 min
Jun 26, 3:30 PM EDT	Severe Thunderstorm Warning	GYX	Oxford	45 min
Jun 26, 3:44 PM EDT	Severe Thunderstorm Warning	GYX	Franklin, Oxford	46 min
Jun 26, 4:06 PM EDT	Severe Thunderstorm Warning	GYX	Franklin, Kennebec, Somerset	39 min
Jun 26, 4:44 PM EDT	Severe Thunderstorm Warning	GYX	Androscoggin, Franklin, Kennebec	46 min
Jun 26, 4:50 PM EDT	Severe Thunderstorm Warning	GYX	Somerset	30 min

Nearby

Severe Thunderstorm Warnings in Maine, 2009 Every severe thunderstorm warning in 2009

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.