Alert archive / Maine / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 80, NWS Gray, ME

July 20, 2013Oxford County, Maine; Coos County, New Hampshire

NWS Gray, ME issued this severe thunderstorm warning at Jul 20, 2013, 3:07 PM EDT for Oxford County, Maine; Coos County, New Hampshire. It was in force for 53 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
Jul 20, 2013, 3:07 PM EDT (19:07 UTC)
Expired
Jul 20, 2013, 4:00 PM EDT
In force
53 min
Issued by
NWS Gray, ME
Area
Storm-based polygon

Counties Oxford County, ME, Coos County, NH

The radar

The Portland,ME radar (KGYX), 100 km from the middle of the area, began a volume at 19:07 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

Albany, NY (KALY), launched 12:00Z, 7.1 hours before the alert went out and 309 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, Albany, NY at 12:00Z on 2013-07-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 18 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, Albany, NY at 12:00Z on 2013-07-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -12 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
18 J/kg
Mixed-layer CIN
-253 J/kg
Mixed-layer LCL
1465 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
-12 m²/s²
0-3 km storm-relative helicity
159 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 Jul 20, 10:54 AM EDT, 4 hours 13 minutes earlier.

Area forecast discussion, Jul 20, 10:54 AM EDT, 4 hours 13 minutes before
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Hazardous weather outlook, Jul 20, 3:33 AM EDT, 11 hours 34 minutes before
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In the hours before

Local storm report, Jul 20, 12:41 PM EDT, 2 hours 26 minutes before
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Local storm report, Jul 20, 12:59 PM EDT, 2 hours 8 minutes before
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Local storm report, Jul 20, 1:21 PM EDT, 1 hour 46 minutes before
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Local storm report, Jul 20, 2:01 PM EDT, 1 hour 6 minutes before
PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE GRAY ME
201 PM EDT SAT JUL 20 2013

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

0955 PM     TSTM WND DMG     MADISON                 44.80N  69.88W
07/19/2013                   SOMERSET           ME   LAW ENFORCEMENT

            MULTIPLE TREES DOWN IN MADISON REPORTED BY SHERIIFS
            OFFICE

&&

CORRECTED EVENT TIME

EVENT NUMBER GYX1300247

MPK
Special weather statement, Jul 20, 2:04 PM EDT, 1 hour 3 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAY ME
204 PM EDT SAT JUL 20 2013

NHZ013-014-201830-
COASTAL ROCKINGHAM-INTERIOR ROCKINGHAM-
204 PM EDT SAT JUL 20 2013

...STRONG THUNDERSTORMS WILL IMPACT ROCKINGHAM COUNTY THROUGH 230 PM
EDT...

AT 204 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF STRONG THUNDERSTORM OVER SOUTHERN ROCKINGHAM COUNTY. THE
STRONGEST STORM WAS CENTERED 2 MILES SOUTHWEST OF NEWTON...OR ABOUT
8 MILES WEST OF NEWBURYPORT...MOVING EAST AT 40 MPH. THIS STRONG
THUNDERSTORM WILL AFFECT AREAS IN AND AROUND KINGSTON STATE
PARK...EAST HAMPSTEAD...PLAISTOW...KINGSTON...DANVILLE...
ATKINSON...NEWTON...EAST  KINGSTON...SOUTH HAMPTON AND KENSINGTON
THROUGH 230 PM EDT.

GUSTY WINDS OF 35 TO 45 MPH CAN BE EXPECTED.

LAT...LON 4281 7111 4281 7116 4291 7119 4302 7073
      4299 7074 4294 7078 4287 7082 4286 7086
      4288 7092 4286 7097 4285 7103 4280 7107

KIMBLE

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 19, 8:12 PM EDTSevere Thunderstorm WarningGYXSomerset33 min
Jul 19, 8:15 PM EDTSevere Thunderstorm WarningGYXFranklin, Oxford45 min
Jul 19, 8:56 PM EDTSevere Thunderstorm WarningGYXAndroscoggin, Franklin, Kennebec, Oxford, Somerset34 min
Jul 19, 9:26 PM EDTSevere Thunderstorm WarningGYXAndroscoggin, Franklin, Kennebec, Knox, Lincoln, Oxford and 2 more49 min
Jul 19, 9:44 PM EDTSevere Thunderstorm WarningGYXOxford, York46 min
Jul 19, 9:55 PM EDTSpecial Weather StatementGYXAndroscoggin50 min
Jul 19, 10:13 PM EDTSpecial Weather StatementGYXWaldo62 min
Jul 20, 12:27 AM EDTSpecial Weather StatementGYXCumberland48 min
Jul 20, 2:30 PM EDTSpecial Marine WarningGYX90 min
Jul 20, 3:22 PM EDTSpecial Marine WarningGYX53 min
Jul 20, 3:46 PM EDTSpecial Weather StatementGYXWaldo29 min
Jul 20, 4:05 PM EDTSpecial Weather StatementGYXKennebec40 min
Jul 20, 4:36 PM EDTSevere Thunderstorm WarningGYXAndroscoggin, Franklin, Kennebec, Knox, Lincoln, Somerset and 1 more54 min
Jul 20, 5:21 PM EDTSevere Thunderstorm WarningGYXKnox, Lincoln, Waldo24 min
Jul 20, 5:27 PM EDTSpecial Marine WarningGYX63 min
Jul 19, 8:37 PM EDTSevere Thunderstorm WarningGYXCarroll, Coos, Grafton23 min
Jul 19, 9:03 PM EDTSevere Thunderstorm WarningGYXBelknap, Carroll, Coos, Grafton42 min
Jul 19, 10:53 PM EDTSpecial Weather StatementGYXSullivan52 min
Jul 19, 11:06 PM EDTSevere Thunderstorm WarningGYXMerrimack, Sullivan39 min
Jul 19, 11:17 PM EDTAreal Flood AdvisoryGYXMerrimack, Sullivan118 min
Jul 19, 11:39 PM EDTSpecial Weather StatementGYXBelknap, Merrimack, Strafford66 min
Jul 19, 11:51 PM EDTSevere Thunderstorm WarningGYXMerrimack, Rockingham, Strafford39 min
Jul 20, 12:03 AM EDTSevere Thunderstorm WarningGYXBelknap, Carroll, Merrimack, Strafford42 min
Jul 20, 2:04 PM EDTSpecial Weather StatementGYXRockingham26 min
Jul 20, 2:20 PM EDTSevere Thunderstorm WarningGYXCoos55 min
Jul 20, 3:32 PM EDTSpecial Weather StatementGYXCoos28 min

Nearby

Severe Thunderstorm Warnings in Maine, 2013Severe Thunderstorm Warnings in New Hampshire, 2013Every 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.