Alert archive / Maine / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 122, NWS Gray, ME

August 2, 2011Somerset County, Waldo County, Maine

NWS Gray, ME issued this severe thunderstorm warning at Aug 2, 2011, 12:50 PM EDT for Somerset County, Waldo County, Maine. It was in force for 40 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Aug 2, 2011, 12:50 PM EDT (16:50 UTC)
Expired
Aug 2, 2011, 1:30 PM EDT
In force
40 min
Issued by
NWS Gray, ME
Area
Storm-based polygon

Counties Somerset County, ME, Waldo County, ME

The radar

The Portland,ME radar (KGYX), 136 km from the middle of the area, began a volume at 16:51 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.

IssuedProductOfficeLasted
Aug 2, 11:31 AM EDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Gray, ME (KGYX), launched 12:00Z, 4.8 hours before the alert went out and 136 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, Gray, ME at 12:00Z on 2011-08-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 465 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, Gray, ME at 12:00Z on 2011-08-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -46 square meters per square second.193958Sfc1 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
465 J/kg
Mixed-layer CIN
-93 J/kg
Mixed-layer LCL
1291 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
-46 m²/s²
0-3 km storm-relative helicity
-27 m²/s²
Significant tornado parameter
-0.1
Supercell composite
-1.6

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Gray, ME wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 2, 12:46 PM EDT, 4 minutes earlier.

Area forecast discussion, Aug 2, 12:46 PM EDT, 4 minutes before
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Hazardous weather outlook, Aug 2, 8:47 AM EDT, 4 hours 3 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GRAY ME
847 AM EDT TUE AUG 2 2011

MEZ007>009-012>014-018>028-NHZ001>010-013-014-031300-
NORTHERN OXFORD-NORTHERN FRANKLIN-CENTRAL SOMERSET-SOUTHERN OXFORD-
SOUTHERN FRANKLIN-SOUTHERN SOMERSET-INTERIOR YORK-
INTERIOR CUMBERLAND-ANDROSCOGGIN-KENNEBEC-INTERIOR WALDO-
COASTAL YORK-COASTAL CUMBERLAND-SAGADAHOC-LINCOLN-KNOX-COASTAL WALDO-
NORTHERN COOS-SOUTHERN COOS-NORTHERN GRAFTON-NORTHERN CARROLL-
SOUTHERN GRAFTON-SOUTHERN CARROLL-SULLIVAN-MERRIMACK-BELKNAP-
STRAFFORD-INTERIOR ROCKINGHAM-COASTAL ROCKINGHAM-
847 AM EDT TUE AUG 2 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN MAINE...CENTRAL NEW
HAMPSHIRE...NORTHERN NEW HAMPSHIRE AND SOUTHEASTERN NEW HAMPSHIRE.

.DAY ONE...TODAY AND TONIGHT.

THERE IS POTENTIAL FOR LARGE HAIL WITH THUNDERSTORMS THIS
AFTERNOON.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

ANZ150>154-031300-
STONINGTON ME TO PORT CLYDE ME OUT TO 25 NM-PENOBSCOT BAY-
PORT CLYDE ME TO CAPE ELIZABETH ME OUT TO 25 NM-CASCO BAY-
CAPE ELIZABETH ME TO MERRIMACK RIVER MA OUT TO 25 NM-
847 AM EDT TUE AUG 2 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CASCO BAY...PENOBSCOT
BAY...THE COASTAL WATERS FROM CAPE ELIZABETH ME TO MERRIMACK RIVER
MA...THE COASTAL WATERS FROM PORT CLYDE ME TO CAPE ELIZABETH ME AND
THE COASTAL WATERS FROM STONINGTON ME TO PORT CLYDE ME.

.DAY ONE...TODAY AND TONIGHT.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

In the hours before

Special weather statement, Aug 2, 11:44 AM EDT, 1 hour 6 minutes before
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Local storm report, Aug 2, 12:14 PM EDT, 36 minutes before
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Special weather statement, Aug 2, 12:16 PM EDT, 34 minutes before
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Special weather statement, Aug 2, 12:19 PM EDT, 31 minutes before
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Special weather statement, Aug 2, 12:29 PM EDT, 21 minutes before
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Local storm report, Aug 2, 12:43 PM EDT, 7 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Aug 1, 8:41 PM EDTFlash Flood WarningGYXSomerset2 hr
Aug 1, 10:10 PM EDTSpecial Weather StatementGYXKennebec35 min
Aug 1, 10:30 PM EDTSpecial Weather StatementGYXLincoln30 min
Aug 1, 10:42 PM EDTSpecial Weather StatementGYXKennebec33 min
Aug 1, 11:14 PM EDTSpecial Weather StatementGYXWaldo46 min
Aug 2, 9:08 AM EDTSpecial Weather StatementGYXFranklin52 min
Aug 2, 10:11 AM EDTSpecial Weather StatementGYXFranklin34 min
Aug 2, 10:23 AM EDTSpecial Weather StatementGYXFranklin37 min
Aug 2, 10:56 AM EDTSevere Thunderstorm WarningGYXFranklin, Kennebec, Somerset34 min
Aug 2, 11:28 AM EDTSpecial Weather StatementGYXKennebec32 min
Aug 2, 11:37 AM EDTSpecial Weather StatementGYXAndroscoggin23 min
Aug 2, 11:44 AM EDTSpecial Weather StatementGYXKennebec31 min
Aug 2, 12:04 PM EDTSevere Thunderstorm WarningGYXAndroscoggin, Kennebec, Sagadahoc41 min
Aug 2, 12:19 PM EDTSpecial Weather StatementGYXWaldo26 min
Aug 2, 12:29 PM EDTSpecial Weather StatementGYXCumberland31 min
Aug 2, 12:37 PM EDTSevere Thunderstorm WarningGYXCumberland, Kennebec, Lincoln, Sagadahoc38 min
Aug 2, 1:10 PM EDTSevere Thunderstorm WarningGYXCumberland, Lincoln, Sagadahoc35 min
Aug 2, 1:21 PM EDTSpecial Weather StatementGYXCumberland24 min
Aug 2, 1:28 PM EDTSpecial Weather StatementGYXLincoln32 min
Aug 2, 1:36 PM EDTSpecial Weather StatementGYXWaldo24 min
Aug 2, 2:43 PM EDTSpecial Weather StatementGYXSomerset32 min
Aug 2, 3:19 PM EDTSpecial Weather StatementGYXFranklin26 min
Aug 2, 4:09 PM EDTSpecial Weather StatementGYXYork36 min
Aug 2, 4:38 PM EDTSpecial Marine WarningGYX67 min
Aug 2, 4:39 PM EDTSpecial Weather StatementGYXAndroscoggin36 min
Aug 2, 4:45 PM EDTSevere Thunderstorm WarningGYXAndroscoggin, Cumberland, Sagadahoc60 min
Aug 2, 5:02 PM EDTSevere Thunderstorm WarningGYXYork58 min
Aug 2, 5:13 PM EDTSpecial Weather StatementGYXKennebec32 min
Aug 2, 5:15 PM EDTSpecial Weather StatementGYXWaldo30 min
Aug 2, 5:51 PM EDTSpecial Marine WarningGYX39 min
Aug 2, 6:24 PM EDTSpecial Weather StatementGYXAndroscoggin51 min
Aug 2, 6:27 PM EDTSpecial Marine WarningGYX33 min
Aug 2, 9:52 AM EDTSpecial Weather StatementGYXCoos23 min
Aug 2, 9:55 AM EDTSevere Thunderstorm WarningGYXCoos35 min
Aug 2, 10:28 AM EDTSpecial Weather StatementGYXCoos32 min
Aug 2, 10:54 AM EDTSpecial Weather StatementGYXGrafton36 min
Aug 2, 11:34 AM EDTSpecial Weather StatementGYXGrafton26 min
Aug 2, 12:16 PM EDTSpecial Weather StatementGYXCarroll29 min

Nearby

Severe Thunderstorm Warnings in Maine, 2011Every severe thunderstorm warning 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.