Alert archive / New Hampshire / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 28, NWS Gray, ME

July 17, 1997Sullivan County, New Hampshire

NWS Gray, ME issued this severe thunderstorm warning at Jul 17, 1997, 6:11 PM EDT for Sullivan County, New Hampshire. It was in force for 49 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 17, 1997, 6:11 PM EDT (22:11 UTC)
Expired
Jul 17, 1997, 7:00 PM EDT
In force
49 min
Issued by
NWS Gray, ME
Area
Whole counties

County Sullivan County, NH

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jul 17, 4:00 PM EDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Albany, NY (KALY), launched 12:00Z, 10.2 hours before the alert went out and 151 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 1997-07-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 74 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 1997-07-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 75 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
74 J/kg
Mixed-layer CIN
-161 J/kg
Mixed-layer LCL
1106 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
75 m²/s²
0-3 km storm-relative helicity
74 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 17, 7:55 PM EDTSevere Thunderstorm WarningGYXYork85 min
Jul 17, 6:59 PM EDTSevere Thunderstorm WarningGYXMerrimack61 min
Jul 17, 7:21 PM EDTSevere Thunderstorm WarningGYXBelknap69 min
Jul 17, 7:45 PM EDTSevere Thunderstorm WarningGYXStrafford60 min

Nearby

Severe Thunderstorm Warnings in New Hampshire, 1997Every severe thunderstorm warning in 1997

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.