Alert archive / New Hampshire / Flash Flood Warnings in 1996

Flash Flood Warning 41, NWS Boston/Norton, MA

December 19, 1996Cheshire County, New Hampshire

NWS Boston/Norton, MA issued this flash flood warning at Dec 19, 1996, 8:14 AM EST for Cheshire County, New Hampshire. It was in force for 12 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Dec 19, 1996, 8:14 AM EST (13:14 UTC)
Expired
Dec 19, 1996, 8:15 PM EST
In force
12 hr
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 13:16 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

Albany, NY (KALB), launched 12:00Z, 1.2 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-pSkew-T log-p diagram, Albany, NY at 12:00Z on 1996-12-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 1996-12-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 44 square meters per square second.1939587897117136Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
464 m above ground
0-6 km bulk shear
103 kt
0-1 km storm-relative helicity
44 m²/s²
0-3 km storm-relative helicity
406 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KBOS 191314
FFWBOS
NHC005-200115-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
814 AM EST THU DEC 19 1996
 
THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  815 PM EST
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTHWEST NEW HAMPSHIRE
 
   ...CHESHIRE COUNTY
 
SNOWMELT AND RAINFALL HAVE BROUGHT THE ASHUELOT RIVER OVER BANKFULL.
OTHER RIVERS AND STREAMS AT ALSO NEAR BANKFULL. MORE RAIN TODAY IS
EXPECTED. ACCUMULATION OF .25 TO .50 INCHES OF RAIN WILL FALL.
 
BY LATE AFTERNOON THE RAIN WILL CHANGE TO SNOW.

Nearby

Flash Flood Warnings in New Hampshire, 1996Every flash flood warning in 1996

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.