Alert archive / Maine / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 13, NWS Gray, ME

June 21, 1997Kennebec County, Maine

NWS Gray, ME issued this severe thunderstorm warning at Jun 21, 1997, 5:07 PM EDT for Kennebec County, Maine. It was in force for 68 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Jun 21, 1997, 5:07 PM EDT (21:07 UTC)
Expired
Jun 21, 1997, 6:15 PM EDT
In force
68 min
Issued by
NWS Gray, ME
Area
Whole counties

County Kennebec County, ME

What was reported inside it

TimeReportWhereRemark
Jun 21, 5:15 PM EDTThunderstorm Wind 62Waterville Arpt, ME

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Gray, ME (KGYX), launched 12:00Z, 9.1 hours before the alert went out and 70 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 12:00Z on 1997-06-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 47 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, Gray, ME at 12:00Z on 1997-06-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 148 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
47 J/kg
Mixed-layer CIN
-134 J/kg
Mixed-layer LCL
986 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
148 m²/s²
0-3 km storm-relative helicity
174 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 KPWM 212105 RRA
SVRPWM
MEC011-212105-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GRAY ME
507 PM EDT SAT JUN 21 1997
 
THE NATIONAL WEATHER SERVICE IN GRAY HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  615 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS......
 
IN  MAINE
 
   ...KENNEBEC COUNTY
 
AT 504 PM...DOPPLER WEATHER RADAR SHOWED A SEVERE THUNDERSTORM
CONTAINING DAMAGING WINDS AND LARGE HAIL OVER THE BELGRADE LAKES JUST
WEST OF OAKLAND. THESE STORMS ARE MOVING EAST AT 40 MPH AND WILL BE NEAR
WATERVILLE BY 530 PM.
 
TORNADOS CAN OCCUR IN THUNDERSTORMS.  SEEK SHELTER IMMEDIATELY!
 
THIS IS A DANGEROUS STORM.  IF YOU ARE IN ITS PATH YOU SHOULD
PREPARE FOR DAMAGING WIND IN EXCESS OF 55 MPH...LARGE HAIL...AND
DEADLY LIGHTNING.  PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT STAY AWAY FROM WINDOWS.
 
JC/NWSFO GYX

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 21, 4:44 PM EDTSevere Thunderstorm WarningGYXSomerset61 min
Jun 21, 5:29 PM EDTSevere Thunderstorm WarningGYXWaldo61 min

Nearby

Severe Thunderstorm Warnings in Maine, 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.