Alert archive / New Hampshire / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 55, NWS Gray, ME

July 30, 1994Rockingham County, New Hampshire

NWS Gray, ME issued this severe thunderstorm warning at Jul 30, 1994, 5:20 PM EDT for Rockingham County, New Hampshire. It was in force for 55 min.

The area

The counties it named.

The facts

Issued
Jul 30, 1994, 5:20 PM EDT (21:20 UTC)
Expired
Jul 30, 1994, 6:15 PM EDT
In force
55 min
Issued by
NWS Gray, ME
Area
Whole counties

County Rockingham County, NH

The nearest sounding before it

Chatham, MA (KCHH), launched 12:00Z, 9.3 hours before the alert went out and 173 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, Chatham, MA at 12:00Z on 1994-07-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 892 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, Chatham, MA at 12:00Z on 1994-07-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 2 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
892 J/kg
Mixed-layer CIN
-10 J/kg
Mixed-layer LCL
546 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
2 m²/s²
0-3 km storm-relative helicity
65 m²/s²
Significant tornado parameter
-0.0
Supercell composite
-0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 30, 7:50 PM EDTSevere Thunderstorm WarningGYXOxford, York40 min
Jul 30, 4:49 PM EDTSevere Thunderstorm WarningGYXRockingham47 min
Jul 30, 6:11 PM EDTSevere Thunderstorm WarningGYXGrafton60 min
Jul 30, 7:34 PM EDTSevere Thunderstorm WarningGYXCarroll27 min

Nearby

Severe Thunderstorm Warnings in New Hampshire, 1994Every severe thunderstorm warning in 1994

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.