Alert archive / Maine / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 126, NWS Gray, ME

September 12, 2013Knox County, Lincoln County, Waldo County, Maine

NWS Gray, ME issued this severe thunderstorm warning at Sep 12, 2013, 1:35 PM EDT for Knox County, Lincoln County, Waldo County, Maine. It was in force for 55 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: Sep 12, 2013, 1:35 PM EDT (17:35 UTC)
Expired: Sep 12, 2013, 2:30 PM EDT
In force: 55 min
Issued by: NWS Gray, ME
Area: Storm-based polygon

Counties Knox County, ME, Lincoln County, ME, Waldo County, ME

The radar

The Portland,ME radar (KGYX), 86 km from the middle of the area, began a volume at 17:38 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
Sep 12, 1:03 PM EDT	Severe Thunderstorm Watch	SPC	9 hr

The nearest sounding before it

Gray, ME (KGYX), launched 12:00Z, 5.6 hours before the alert went out and 87 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: 84 J/kg
Mixed-layer CIN: -209 J/kg
Mixed-layer LCL: 1157 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 116 m²/s²
0-3 km storm-relative helicity: 170 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

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 Sep 12, 1:06 PM EDT, 29 minutes earlier.

Area forecast discussion, Sep 12, 1:06 PM EDT, 29 minutes before

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Hazardous weather outlook, Sep 12, 1:11 PM EDT, 24 minutes before

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In the hours before

Special weather statement, Sep 12, 11:44 AM EDT, 1 hour 51 minutes before

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Special weather statement, Sep 12, 11:48 AM EDT, 1 hour 47 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAY ME
1148 AM EDT THU SEP 12 2013

MEZ012-018>020-023>025-121645-
ANDROSCOGGIN-COASTAL CUMBERLAND-COASTAL YORK-INTERIOR
CUMBERLAND-INTERIOR YORK-SAGADAHOC-SOUTHERN OXFORD-
1148 AM EDT THU SEP 12 2013

...STRONG THUNDERSTORMS WILL IMPACT ANDROSCOGGIN COUNTY...SAGADAHOC
COUNTY...OXFORD COUNTY...YORK COUNTY AND CUMBERLAND COUNTY THROUGH
1245 PM EDT...

AT 1148 AM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM CENTERED ALONG A LINE EXTENDING FROM BIG BASIN TO
3 MILES NORTH OF ACTON...OR ALONG A LINE EXTENDING FROM 6 MILES SOUTH
OF NAPLES TO 11 MILES NORTHWEST OF SANFORD...MOVING NORTHEAST AT 50
MPH. THIS STRONG THUNDERSTORM WILL AFFECT AREAS IN AND AROUND
SEBAGO...BALDWIN...WEST NEWFIELD...EMERY MILLS...EAST SEBAGO...WEST
BALDWIN...SPRINGVALE...SHAPLEIGH...PARSONSFIELD AND NEWFIELD THROUGH
1245 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.

IF YOU ARE OUTDOORS AND STORMS APPROACH YOUR LOCATION...MOVE INDOORS
OR INSIDE A VEHICLE. REMEMBER...LIGHTNING CAN STRIKE MORE THAN 5
MILES AWAY FROM THE PARENT THUNDERSTORM.

LAT...LON 4350 7096 4375 7098 4426 7012 4375 6979
      4371 6991 4373 6989 4376 6992 4374 6996
      4371 6992 4371 6993 4373 6996 4371 7006
      4373 7007 4366 7010 4369 7013 4363 7017
      4340 7091

MLE

Local storm report, Sep 12, 12:09 PM EDT, 1 hour 26 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAY ME
1209 PM EDT THU SEP 12 2013

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0930 PM     MARINE TSTM WIND ISLEBORO                44.31N  68.90W
09/11/2013  E60 MPH          WALDO              ME   EMERGENCY MNGR

            TREES DOWN ALL OVER ISLEBORO.

&&

EVENT NUMBER GYX1300352

MC

Local storm report, Sep 12, 12:27 PM EDT, 1 hour 8 minutes before

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Local storm report, Sep 12, 12:43 PM EDT, 52 minutes before

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Special weather statement, Sep 12, 1:26 PM EDT, 9 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
Sep 11, 8:13 PM EDT	Severe Thunderstorm Warning	GYX	Androscoggin, Kennebec, Lincoln, Sagadahoc	47 min
Sep 11, 8:36 PM EDT	Severe Thunderstorm Warning	GYX	Kennebec, Knox, Lincoln, Waldo	54 min
Sep 11, 8:52 PM EDT	Special Weather Statement	GYX	Cumberland	23 min
Sep 11, 8:55 PM EDT	Special Marine Warning	GYX		95 min
Sep 11, 8:57 PM EDT	Severe Thunderstorm Warning	GYX	Cumberland	48 min
Sep 11, 9:08 PM EDT	Severe Thunderstorm Warning	GYX	Cumberland, Oxford, York	37 min
Sep 11, 9:45 PM EDT	Severe Thunderstorm Warning	GYX	Androscoggin, Cumberland, Oxford, York	45 min
Sep 11, 9:48 PM EDT	Severe Thunderstorm Warning	GYX	Androscoggin, Cumberland, Lincoln, Sagadahoc	57 min
Sep 11, 9:57 PM EDT	Special Marine Warning	GYX		93 min
Sep 11, 10:04 PM EDT	Severe Thunderstorm Warning	GYX	Androscoggin, Cumberland, Kennebec, Oxford, Sagadahoc, York	56 min
Sep 11, 10:19 PM EDT	Special Marine Warning	GYX		86 min
Sep 11, 11:17 PM EDT	Special Weather Statement	GYX	Franklin	28 min
Sep 11, 11:21 PM EDT	Special Marine Warning	GYX		24 min
Sep 11, 11:41 PM EDT	Special Marine Warning	GYX		64 min
Sep 12, 5:55 AM EDT	Special Weather Statement	GYX	Oxford	65 min
Sep 12, 11:20 AM EDT	Special Weather Statement	GYX	York	55 min
Sep 12, 11:48 AM EDT	Special Weather Statement	GYX	Androscoggin, Cumberland	57 min
Sep 12, 12:12 PM EDT	Severe Thunderstorm Warning	GYX	Androscoggin, Cumberland, Kennebec, Sagadahoc	63 min
Sep 12, 12:51 PM EDT	Severe Thunderstorm Warning	GYX	Androscoggin, Cumberland, Knox, Lincoln, Sagadahoc	54 min
Sep 12, 12:55 PM EDT	Special Marine Warning	GYX		65 min
Sep 12, 12:57 PM EDT	Special Marine Warning	GYX		93 min
Sep 12, 12:59 PM EDT	Severe Thunderstorm Warning	GYX	York	46 min
Sep 12, 1:26 PM EDT	Special Weather Statement	GYX	Knox, Lincoln	64 min
Sep 12, 2:41 PM EDT	Areal Flood Advisory	GYX	York	3 hr
Sep 12, 2:50 PM EDT	Special Weather Statement	GYX	York	25 min
Sep 12, 3:07 PM EDT	Flash Flood Watch	GYX	Androscoggin, Cumberland, Franklin, Kennebec, Knox, Lincoln and 5 more	12 hr
Sep 12, 3:41 PM EDT	Special Weather Statement	GYX	Cumberland	34 min
Sep 12, 3:47 PM EDT	Severe Thunderstorm Warning	GYX	York	43 min
Sep 12, 3:51 PM EDT	Special Marine Warning	GYX		84 min
Sep 12, 3:57 PM EDT	Special Weather Statement	GYX	Androscoggin, Cumberland, Sagadahoc	63 min
Sep 12, 4:31 PM EDT	Severe Thunderstorm Warning	GYX	Franklin, Oxford	44 min
Sep 12, 5:09 PM EDT	Severe Thunderstorm Warning	GYX	Franklin, Oxford	51 min
Sep 12, 5:46 PM EDT	Areal Flood Advisory	GYX	Franklin, Oxford, Somerset	119 min
Sep 12, 6:02 PM EDT	Flash Flood Warning	GYX	Franklin, Oxford	3 hr
Sep 12, 6:24 PM EDT	Special Weather Statement	GYX	Kennebec, Oxford	66 min
Sep 11, 8:08 PM EDT	Severe Thunderstorm Warning	GYX	Carroll, Grafton, Sullivan	67 min
Sep 11, 9:03 PM EDT	Severe Thunderstorm Warning	GYX	Belknap, Carroll, Coos, Grafton, Merrimack	57 min
Sep 11, 9:22 PM EDT	Severe Thunderstorm Warning	GYX	Belknap, Carroll, Merrimack, Rockingham, Strafford	53 min
Sep 11, 9:44 PM EDT	Areal Flood Advisory	GYX	Grafton	91 min
Sep 12, 4:53 AM EDT	Special Weather Statement	GYX	Coos	52 min
Sep 12, 10:45 AM EDT	Special Weather Statement	GYX	Carroll	60 min
Sep 12, 10:59 AM EDT	Special Weather Statement	GYX	Belknap, Merrimack	61 min
Sep 12, 11:44 AM EDT	Special Weather Statement	GYX	Rockingham	61 min
Sep 12, 12:10 PM EDT	Severe Thunderstorm Warning	GYX	Rockingham, Strafford	65 min
Sep 12, 2:08 PM EDT	Special Weather Statement	GYX	Rockingham, Strafford	37 min
Sep 12, 4:25 PM EDT	Special Weather Statement	GYX	Coos	35 min
Sep 12, 4:49 PM EDT	Severe Thunderstorm Warning	GYX	Coos, Grafton	56 min
Sep 12, 5:19 PM EDT	Special Weather Statement	GYX	Sullivan	56 min
Sep 12, 5:21 PM EDT	Special Weather Statement	GYX	Merrimack	24 min
Sep 12, 5:35 PM EDT	Severe Thunderstorm Warning	GYX	Belknap, Carroll, Coos, Grafton, Merrimack, Sullivan	55 min
Sep 12, 6:16 PM EDT	Areal Flood Advisory	GYX	Carroll, Coos, Grafton	119 min
Sep 12, 4:21 PM EDT	Special Weather Statement	GYX	Caledonia	39 min

Nearby

Severe Thunderstorm Warnings in Maine, 2013 Every severe thunderstorm warning in 2013

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.