Alert archive / New Hampshire / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 33, NWS Gray, ME

June 24, 2010Grafton County, New Hampshire

NWS Gray, ME issued this severe thunderstorm warning at Jun 24, 2010, 4:12 PM EDT for Grafton County, New Hampshire. It was in force for 33 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
Jun 24, 2010, 4:12 PM EDT (20:12 UTC)
Expired
Jun 24, 2010, 4:45 PM EDT
In force
33 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 20:13 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
Jun 24, 1:05 PM EDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Albany, NY (KALY), launched 12:00Z, 8.2 hours before the alert went out and 214 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 2010-06-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 169 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 2010-06-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 83 square meters per square second.19395878Sfc1 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
169 J/kg
Mixed-layer CIN
-171 J/kg
Mixed-layer LCL
1225 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
83 m²/s²
0-3 km storm-relative helicity
127 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 24, 2:40 PM EDTSevere Thunderstorm WarningGYXCumberland, York35 min
Jun 24, 2:44 PM EDTSpecial Marine WarningGYX46 min
Jun 24, 3:14 PM EDTSpecial Marine WarningGYX46 min
Jun 24, 3:16 PM EDTSevere Thunderstorm WarningGYXCumberland, Lincoln, Sagadahoc29 min
Jun 24, 3:53 PM EDTSpecial Marine WarningGYX37 min
Jun 24, 6:19 PM EDTSevere Thunderstorm WarningGYXYork26 min
Jun 24, 6:39 PM EDTSevere Thunderstorm WarningGYXYork36 min
Jun 24, 6:53 PM EDTSpecial Marine WarningGYX52 min
Jun 24, 7:06 PM EDTSevere Thunderstorm WarningGYXCumberland, York39 min
Jun 24, 7:22 PM EDTSpecial Marine WarningGYX53 min
Jun 24, 12:36 PM EDTSpecial Weather StatementGYXGrafton24 min
Jun 24, 5:28 PM EDTSevere Thunderstorm WarningGYXBelknap, Grafton, Merrimack, Sullivan47 min
Jun 24, 6:17 PM EDTSevere Thunderstorm WarningGYXBelknap, Carroll, Merrimack, Rockingham, Strafford28 min

Nearby

Severe Thunderstorm Warnings in New Hampshire, 2010Every severe thunderstorm warning in 2010

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.