Alert archive / Maine / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 58, NWS Gray, ME

August 16, 2002York County, Maine

NWS Gray, ME issued this severe thunderstorm warning at Aug 16, 2002, 2:26 PM EDT for York County, Maine. It was in force for 49 min. 2 reports 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
Aug 16, 2002, 2:26 PM EDT (18:26 UTC)
Expired
Aug 16, 2002, 3:15 PM EDT
In force
49 min
Issued by
NWS Gray, ME
Area
Counties, with a storm outline in the text

County York County, ME

The radar

The Portland,ME radar (KGYX), 61 km from the middle of the area, began a volume at 18:25 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.

What was reported inside it

TimeReportWhereRemark
Aug 16, 2:45 PM EDTHail 0.75Arundel, ME
Aug 16, 2:50 PM EDTThunderstorm Wind 50 EArundel, 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

Albany, NY (KALY), launched 12:00Z, 6.4 hours before the alert went out and 270 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 2002-08-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1212 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 2002-08-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -1 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
1212 J/kg
Mixed-layer CIN
-65 J/kg
Mixed-layer LCL
976 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
-1 m²/s²
0-3 km storm-relative helicity
61 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.2

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Gray, ME wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 16, 9:30 AM EDT, 4 hours 56 minutes earlier.

Area forecast discussion, Aug 16, 9:30 AM EDT, 4 hours 56 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GRAY ME
930 AM EDT FRI AUG 16 2002

UPDATED DISCUSSION...
SCATTERED SHOWERS AND THUNDERSTORMS THAT MOVED INTO THE FORECAST
AREA OVERNIGHT CONTINUE TO MOVE EAST AND SHOULD BE MOSTLY EAST OF
THE FORECAST AREA BY NOONTIME.  VISIBLE SATELLITE IMAGERY SHOWS
CLOUDS THINNING BEHIND THE SHOWERS OVER WESTERN NEW HAMPSHIRE AND
VERMONT.  COULD SEE ENOUGH HEATING TO REDEVELOP SOME SCATTERED
CONVECTION...BUT PROBABLY NOT UNTIL LATE IN THE DAY AS REFLECTED IN
MAV MOS 6 HOUR POPS.  PREVIOUS FORECAST ON TRACK.  WILL ISSUE AN
UPDATED MAINLY TO INTRODUCE SOME LATE DAY TIMING ON THE NEXT CHANCE
OF SHOWERS AND THUNDERSTORMS AND HIGHLIGHT HUMID CONDITIONS FOR THIS
AFTERNOON WITH DEW POINTS IN THE LOWER 70S.  PWMWRKZFP AVAILABLE FOR
COORDINATION.  NO SIGNIFICANT CHANGES FOR THE COASTAL WATERS
FORECAST UPDATE.  NO FLAGS.

PREVIOUS DISCUSSION...
ANOTHER WARM AND MUGGY NGT WTH DEWPTS IN THE 60S...BUT LOWR 70S
UPSTRM.  A FEW LGT SHWRS ARND SRN ME MOVG NE AND ANOTHR BATCH WTH A
S/W IN NYSTATE.  BEST POPS THIS AM WTH THE S/W BUT UNSTABLE ENUF TO
KEEP A CHC GOING ALL DAY.  A CDFNT WKNS TO A TROF AS IT MOVES THRU
THE FA ON SAT BUT REMAINING WARM AND LTL IN THE WAY OF PCPN.  NEXT
DECENT THREAT OF SHWRS SUN AS A STACKED LOW IN JAMES BAY PUSHES A
WARM FNT THRU ERY IN THE DAY...FOLLOWED BY A CDFNT SYSTM SUN NGT.

FCSTID = 7

.GYX...
ME...NONE.
NH...NONE.

WHEELER

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 16, 2:56 PM EDTSpecial Marine WarningGYX64 min
Aug 16, 4:57 PM EDTSevere Thunderstorm WarningGYXSullivan33 min

Nearby

Severe Thunderstorm Warnings in Maine, 2002Every severe thunderstorm warning in 2002

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; radar from the NEXRAD Level II archive.