Alert archive / New Hampshire / Tornado Warnings in 1997

Tornado Warning 4, NWS Boston/Norton, MA

July 3, 1997Cheshire County, New Hampshire

NWS Boston/Norton, MA issued this tornado warning at Jul 3, 1997, 7:34 PM EDT for Cheshire County, New Hampshire. It was in force for 41 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 3, 1997, 7:34 PM EDT (23:34 UTC)
Expired: Jul 3, 1997, 8:15 PM EDT
In force: 41 min
Issued by: NWS Boston/Norton, MA
Area: Whole counties

County Cheshire County, NH

The radar

The Boston radar (KBOX), 141 km from the middle of the area, began a volume at 23:37 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.

Issued	Product	Office	Lasted
Jul 3, 2:30 PM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Albany, NY (KALY), launched 12:00Z, 11.6 hours before the alert went out and 131 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 901 J/kg
Mixed-layer CIN: -44 J/kg
Mixed-layer LCL: 598 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 94 m²/s²
0-3 km storm-relative helicity: 101 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 1.4

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KBOS 032335 RRA
TORBOS
NHC005-040015-
 
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
734 PM EDT THU JUL 3 1997
 
THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  815 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTHWEST NEW HAMPSHIRE
 
   ...CHESHIRE COUNTY
 
AT 732 PM...AMATURE RADIO OBSERVERS INDICATED A TORNADO ON THE GROUND IN
RICHMOND. THIS STORM IS HEADING EAST AND WILL AFFECT PORTIONS OF
SOUTHEAST CHESHIRE COUNTY FROM TROY AND FITZWILLIAM EAST THROUGH JAFFREY
AND RINDGE.
 
IF YOU ARE IN THE PATH OF A TORNADO...THE SAFEST PLACE IS A
BASEMENT.  GET UNDER A WORKBENCH OR PIECE OF STURDY FURNITURE.
IF NO BASEMENT IS AVAILABLE...SEEK SHELTER IN AN INTERIOR ROOM
SUCH AS A CLOSET ON THE LOWEST FLOOR.  USE BLANKETS...PILLOWS...
OR CUSHIONS TO COVER YOUR BODY.  AVOID WINDOWS.
 
DRV/GF
 
&

The office that day

Everything else NWS Boston/Norton, MA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 3, 6:24 PM EDT	Severe Thunderstorm Warning	BOX	Cheshire	51 min
Jul 3, 6:56 PM EDT	Severe Thunderstorm Warning	BOX	Hillsborough	64 min
Jul 3, 7:29 PM EDT	Severe Thunderstorm Warning	BOX	Cheshire	46 min
Jul 3, 7:59 PM EDT	Tornado Warning	BOX	Hillsborough	61 min

Nearby

Tornado Warnings in New Hampshire, 1997 Every tornado warning in 1997 Tornadoes 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; radar from the NEXRAD Level II archive.