Alert archive / Maine / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 134, NWS Gray, ME

August 19, 2011Cumberland County, York County, Maine

NWS Gray, ME issued this severe thunderstorm warning at Aug 19, 2011, 5:27 PM EDT for Cumberland County, York County, Maine. It was in force for 48 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 19, 2011, 5:27 PM EDT (21:27 UTC)
Expired: Aug 19, 2011, 6:15 PM EDT
In force: 48 min
Issued by: NWS Gray, ME
Area: Storm-based polygon

Counties Cumberland County, ME, York County, ME

The radar

The Portland,ME radar (KGYX), 36 km from the middle of the area, began a volume at 21:28 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 nearest sounding before it

Gray, ME (KGYX), launched 12:00Z, 9.5 hours before the alert went out and 36 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: 468 J/kg
Mixed-layer CIN: -70 J/kg
Mixed-layer LCL: 1145 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 23 m²/s²
0-3 km storm-relative helicity: 68 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

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 19, 5:18 PM EDT, 9 minutes earlier.

Area forecast discussion, Aug 19, 5:18 PM EDT, 9 minutes before

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Hazardous weather outlook, Aug 19, 3:29 PM EDT, 1 hour 58 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GRAY ME
329 PM EDT FRI AUG 19 2011

MEZ007>009-012>014-018>028-NHZ001>010-013-014-201000-
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-
329 PM EDT FRI AUG 19 2011

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

.DAY ONE...THIS AFTERNOON AND TONIGHT.

A FEW THUNDERSTORMS COULD PRODUCE SMALL HAIL AND TORRENTIAL
DOWNPOURS THROUGH EARLY THIS EVENING.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

ANZ150>154-201000-
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-
329 PM EDT FRI AUG 19 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...THIS AFTERNOON AND TONIGHT.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

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 19, 4:02 PM EDT, 1 hour 25 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAY ME
402 PM EDT FRI AUG 19 2011

MEZ007-NHZ001-192045-
NORTHERN COOS-NORTHERN OXFORD-
402 PM EDT FRI AUG 19 2011

...STRONG THUNDERSTORMS WILL IMPACT OXFORD COUNTY AND COOS COUNTY
THROUGH 445 PM EDT...

AT 402 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM CENTERED OVER COOS COUNTY...OR ABOUT 14 MILES
NORTHEAST OF CANAAN...MOVING NORTHEAST AT 30 MPH. THIS STRONG
THUNDERSTORM WILL AFFECT AREAS IN AND AROUND THROUGH 445 PM EDT.

HAIL UP TO THREE QUARTER INCH IN DIAMETER...HEAVY DOWNPOURS...
EXCESSIVE CLOUD-TO-GROUND LIGHTNING AND GUSTY WINDS OF 45 TO 55 MPH
CAN BE EXPECTED.

LAT...LON 4534 7094 4523 7099 4506 7142 4519 7143
      4521 7142 4523 7143 4529 7126 4526 7123
      4525 7115 4532 7109 4532 7102 4535 7102

ES

Special weather statement, Aug 19, 4:07 PM EDT, 1 hour 20 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAY ME
407 PM EDT FRI AUG 19 2011

NHZ008-013-192045-
INTERIOR ROCKINGHAM-MERRIMACK-
407 PM EDT FRI AUG 19 2011

...STRONG THUNDERSTORMS WILL IMPACT MERRIMACK COUNTY AND ROCKINGHAM
COUNTY THROUGH 445 PM EDT...

AT 407 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
CLUSTER OF STRONG THUNDERSTORMS CENTERED 6 MILES SOUTHWEST OF
AUBURN...OR ABOUT 4 MILES SOUTHEAST OF MANCHESTER...MOVING NORTHEAST
AT 20 MPH. THIS CLUSTER OF STRONG THUNDERSTORMS WILL AFFECT AREAS IN
AND AROUND SOUTH HOOKSETT...AUBURN...CHESTER...CANDIA...FREMONT...
RAYMOND...PAWTUCKAWAY STATE PARK...NOTTINGHAM AND EPPING THROUGH 445
PM EDT.

HAIL UP TO THREE QUARTER INCH IN DIAMETER...HEAVY DOWNPOURS...
EXCESSIVE CLOUD-TO-GROUND LIGHTNING AND GUSTY WINDS OF 35 TO 45 MPH
CAN BE EXPECTED.

HEAVY RAIN MAY PRODUCE LOCALIZED DRAINAGE FLOODING AND PONDING OF
WATER.

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.

LAT...LON 4285 7142 4293 7146 4294 7144 4294 7139
      4300 7139 4301 7144 4303 7146 4318 7111
      4299 7104

ES

Local storm report, Aug 19, 4:36 PM EDT, 51 minutes before

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Local storm report, Aug 19, 4:48 PM EDT, 39 minutes before

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Local storm report, Aug 19, 5:03 PM EDT, 24 minutes before

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Special weather statement, Aug 19, 5:10 PM EDT, 17 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 19, 12:46 PM EDT	Special Weather Statement	GYX	Oxford	44 min
Aug 19, 1:08 PM EDT	Severe Thunderstorm Warning	GYX	Oxford	37 min
Aug 19, 1:55 PM EDT	Areal Flood Advisory	GYX	Oxford	3 hr
Aug 19, 2:06 PM EDT	Special Weather Statement	GYX	York	24 min
Aug 19, 2:22 PM EDT	Special Weather Statement	GYX	Oxford	53 min
Aug 19, 2:44 PM EDT	Special Weather Statement	GYX	Somerset	61 min
Aug 19, 3:42 PM EDT	Special Weather Statement	GYX	York	48 min
Aug 19, 3:46 PM EDT	Special Weather Statement	GYX	Androscoggin	44 min
Aug 19, 3:53 PM EDT	Severe Thunderstorm Warning	GYX	Androscoggin, Kennebec	52 min
Aug 19, 4:02 PM EDT	Special Weather Statement	GYX		43 min
Aug 19, 4:24 PM EDT	Severe Thunderstorm Warning	GYX	Androscoggin, Kennebec, Oxford	51 min
Aug 19, 4:28 PM EDT	Severe Thunderstorm Warning	GYX	Franklin, Kennebec, Somerset	47 min
Aug 19, 4:42 PM EDT	Severe Thunderstorm Warning	GYX	York	48 min
Aug 19, 6:08 PM EDT	Severe Thunderstorm Warning	GYX	Cumberland, York	52 min
Aug 19, 6:35 PM EDT	Special Weather Statement	GYX	Somerset	55 min
Aug 19, 7:25 PM EDT	Special Weather Statement	GYX	Oxford	65 min
Aug 19, 3:05 PM EDT	Special Weather Statement	GYX	Rockingham	55 min
Aug 19, 3:13 PM EDT	Special Weather Statement	GYX	Carroll	62 min
Aug 19, 3:20 PM EDT	Special Weather Statement	GYX	Rockingham	25 min
Aug 19, 3:21 PM EDT	Severe Thunderstorm Warning	GYX	Rockingham	39 min
Aug 19, 4:07 PM EDT	Special Weather Statement	GYX	Rockingham	38 min
Aug 19, 4:19 PM EDT	Severe Thunderstorm Warning	GYX	Belknap, Carroll, Strafford	56 min
Aug 19, 4:29 PM EDT	Severe Thunderstorm Warning	GYX	Rockingham	31 min
Aug 19, 5:10 PM EDT	Special Weather Statement	GYX	Merrimack	65 min
Aug 19, 5:41 PM EDT	Areal Flood Advisory	GYX	Belknap, Carroll, Merrimack, Rockingham, Strafford	3 hr
Aug 19, 6:23 PM EDT	Special Weather Statement	GYX	Belknap	37 min
Aug 19, 6:54 PM EDT	Special Weather Statement	GYX	Coos	66 min
Aug 19, 1:40 PM EDT	Special Weather Statement	GYX	Caledonia	50 min

Nearby

Severe Thunderstorm Warnings in Maine, 2011 Every 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.