Alert archive / New Hampshire / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 93, NWS Gray, ME

August 7, 2014Grafton County, New Hampshire

NWS Gray, ME issued this severe thunderstorm warning at Aug 7, 2014, 3:09 PM EDT for Grafton County, New Hampshire. It was in force for 36 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 7, 2014, 3:09 PM EDT (19:09 UTC)
Expired
Aug 7, 2014, 3:45 PM EDT
In force
36 min
Issued by
NWS Gray, ME
Area
Storm-based polygon

County Grafton County, NH

The radar

The Burlington radar (KCXX), 125 km from the middle of the area, began a volume at 19:12 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, 7.2 hours before the alert went out and 125 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 2014-08-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 13 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 2014-08-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -10 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
13 J/kg
Mixed-layer CIN
-73 J/kg
Mixed-layer LCL
1431 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
-10 m²/s²
0-3 km storm-relative helicity
-23 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 Aug 7, 3:07 PM EDT, 2 minutes earlier.

Area forecast discussion, Aug 7, 3:07 PM EDT, 2 minutes before
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Hazardous weather outlook, Aug 7, 3:09 PM EDT, 0 minutes before
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In the hours before

Special weather statement, Aug 7, 1:55 PM EDT, 1 hour 14 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAY ME
155 PM EDT THU AUG 7 2014

MEZ012-013-020-021-071830-
ANDROSCOGGIN-KENNEBEC-SOUTHERN FRANKLIN-SOUTHERN OXFORD-
155 PM EDT THU AUG 7 2014

...STRONG THUNDERSTORMS WILL IMPACT ANDROSCOGGIN COUNTY...OXFORD
COUNTY...FRANKLIN COUNTY AND KENNEBEC COUNTY THROUGH 230 PM EDT...

AT 155 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM CENTERED 3 MILES SOUTHEAST OF LIVERMORE FALLS...
OR ABOUT 14 MILES NORTH OF TURNER...MOVING SOUTHEAST AT 15 MPH. THIS
STRONG THUNDERSTORM WILL AFFECT AREAS IN AND AROUND LIVERMORE
FALLS...JAY...FAYETTE...WINTHROP...WALES...READFIELD...MONMOUTH...
MANCHESTER...LEEDS AND HALLOWELL THROUGH 230 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 4428 6979 4414 7004 4445 7032 4456 7012

!SJC
Local storm report, Aug 7, 2:10 PM EDT, 59 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAY ME
210 PM EDT THU AUG 07 2014

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

0206 PM     HAIL             NORTH HAVERHILL         44.08N  72.02W
08/07/2014  M0.50 INCH       GRAFTON            NH   COOP 2

&&

EVENT NUMBER GYX1400203

MC
Local storm report, Aug 7, 2:48 PM EDT, 21 minutes before
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Local storm report, Aug 7, 2:53 PM EDT, 16 minutes before
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Local storm report, Aug 7, 2:54 PM EDT, 15 minutes before
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Special weather statement, Aug 7, 3:00 PM EDT, 9 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Aug 7, 12:55 PM EDTSpecial Weather StatementGYXOxford35 min
Aug 7, 1:15 PM EDTSpecial Weather StatementGYXCumberland30 min
Aug 7, 1:24 PM EDTAreal Flood AdvisoryGYXFranklin, Oxford111 min
Aug 7, 1:34 PM EDTSpecial Weather StatementGYXCumberland26 min
Aug 7, 1:46 PM EDTSpecial Weather StatementGYXYork29 min
Aug 7, 1:55 PM EDTSpecial Weather StatementGYXAndroscoggin35 min
Aug 7, 2:15 PM EDTSevere Thunderstorm WarningGYXKennebec45 min
Aug 7, 2:17 PM EDTSevere Thunderstorm WarningGYXOxford, York43 min
Aug 7, 2:29 PM EDTSevere Thunderstorm WarningGYXYork46 min
Aug 7, 2:37 PM EDTSevere Thunderstorm WarningGYXCumberland, York38 min
Aug 7, 2:44 PM EDTSevere Thunderstorm WarningGYXYork31 min
Aug 7, 2:55 PM EDTSevere Thunderstorm WarningGYXCumberland, York50 min
Aug 7, 3:06 PM EDTSpecial Marine WarningGYX54 min
Aug 7, 3:07 PM EDTSevere Thunderstorm WarningGYXYork33 min
Aug 7, 3:52 PM EDTSpecial Weather StatementGYXWaldo23 min
Aug 7, 4:12 PM EDTAreal Flood AdvisoryGYXSomerset, Waldo2 hr
Aug 7, 4:41 PM EDTFlash Flood WarningGYXWaldo3 hr
Aug 7, 5:12 PM EDTSpecial Marine WarningGYX63 min
Aug 7, 5:25 PM EDTSpecial Weather StatementGYXSomerset50 min
Aug 7, 6:24 PM EDTAreal Flood AdvisoryGYXSomerset111 min
Aug 7, 12:05 PM EDTSpecial Weather StatementGYXSullivan25 min
Aug 7, 12:15 PM EDTSpecial Weather StatementGYXSullivan30 min
Aug 7, 12:18 PM EDTSpecial Weather StatementGYXGrafton27 min
Aug 7, 12:36 PM EDTSpecial Weather StatementGYXCarroll39 min
Aug 7, 12:49 PM EDTSpecial Weather StatementGYXCoos26 min
Aug 7, 1:02 PM EDTSpecial Weather StatementGYXGrafton28 min
Aug 7, 1:19 PM EDTSpecial Weather StatementGYXCarroll26 min
Aug 7, 1:20 PM EDTSpecial Weather StatementGYXCarroll25 min
Aug 7, 1:28 PM EDTSpecial Weather StatementGYXCoos32 min
Aug 7, 1:41 PM EDTSpecial Weather StatementGYXCoos34 min
Aug 7, 1:43 PM EDTSpecial Weather StatementGYXCarroll32 min
Aug 7, 1:44 PM EDTSpecial Weather StatementGYXStrafford31 min
Aug 7, 1:47 PM EDTSevere Thunderstorm WarningGYXBelknap, Strafford43 min
Aug 7, 1:49 PM EDTSpecial Weather StatementGYXBelknap26 min
Aug 7, 1:50 PM EDTSpecial Weather StatementGYXCarroll25 min
Aug 7, 1:52 PM EDTSpecial Weather StatementGYXGrafton23 min
Aug 7, 3:00 PM EDTSpecial Weather StatementGYXRockingham30 min
Aug 7, 3:30 PM EDTSpecial Weather StatementGYXGrafton30 min
Aug 7, 3:37 PM EDTSevere Thunderstorm WarningGYXGrafton26 min
Aug 7, 4:21 PM EDTSevere Thunderstorm WarningGYXSullivan54 min
Aug 7, 4:29 PM EDTSpecial Weather StatementGYXCarroll46 min
Aug 7, 4:30 PM EDTSpecial Weather StatementGYXRockingham30 min
Aug 7, 4:49 PM EDTSevere Thunderstorm WarningGYXRockingham25 min
Aug 7, 5:45 PM EDTSpecial Weather StatementGYXStrafford45 min
Aug 7, 6:01 PM EDTSevere Thunderstorm WarningGYXRockingham, Strafford25 min

Nearby

Severe Thunderstorm Warnings in New Hampshire, 2014Every severe thunderstorm warning in 2014

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.