Alert archive / New Hampshire / Flash Flood Warnings in 1992

Flash Flood Warning 2, NWS Gray, ME

March 27, 1992Grafton County, New Hampshire

NWS Gray, ME issued this flash flood warning at Mar 27, 1992, 5:38 AM EST for Grafton County, New Hampshire. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued
Mar 27, 1992, 5:38 AM EST (10:38 UTC)
Expired
Mar 27, 1992, 9:45 AM EST
In force
4 hr
Issued by
NWS Gray, ME
Area
Whole counties

County Grafton County, NH

The nearest sounding before it

Gray, ME (KPWM), launched 00:00Z, 10.6 hours before the alert went out and 125 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, Gray, ME at 00:00Z on 1992-03-27Temperature 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, Gray, ME at 00:00Z on 1992-03-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 201 square meters per square second.1939587897Sfc1 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
996 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
201 m²/s²
0-3 km storm-relative helicity
171 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 KCON 271045
FFWCON
NHC009-271445-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE CONCORD NH
538 AM EST FRI MAR 27 1992
 
THE NATIONAL WEATHER SERVICE IN CONCORD HAS ISSUED A
FLOOD WARNING EFFECTIVE UNTIL  945 AM EST
FOR PEOPLE IN THE FOLLOWING COUNTY...
 
IN NORTHWEST NEW HAMPSHIRE
          ...GRAFTON
 
THE NEW HAMPSHIRE DEPARTMENT OF TRANSPORTATION HAS NOTIFIED THE
NATIONAL WEATHER SERVICE THAT RT 25A IN ORFORD HAS 1 TO 2 FEET OF
WATER RUNNING OVER IT AND IS NOW CLOSED. IT IS APPARENTLY THE RESULT
OF AN ICE JAM ON JACOBS BROOK.
 
ADDITIONAL SMALL RIVERS AND STREAMS IN THIS COUNTY HAVE ICE JAM
POTENTIAL AS THE HEAVY RAINS WILL CONTINUE TO RUN OFF CAUSING
WATER LEVELS6 TO RISE.

Nearby

Flash Flood Warnings in New Hampshire, 1992Every flash flood warning in 1992

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.