Alert archive / Maine / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 175, NWS Gray, ME

August 13, 2007Lincoln County, Maine

NWS Gray, ME issued this severe thunderstorm warning at Aug 13, 2007, 4:57 PM EDT for Lincoln County, Maine. It was in force for 48 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
Aug 13, 2007, 4:57 PM EDT (20:57 UTC)
Expired
Aug 13, 2007, 5:45 PM EDT
In force
48 min
Issued by
NWS Gray, ME
Area
Counties, with a storm outline in the text

County Lincoln County, ME

The radar

The Portland,ME radar (KGYX), 60 km from the middle of the area, began a volume at 20:59 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

Chatham, MA (KCHH), launched 12:00Z, 9.0 hours before the alert went out and 261 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, Chatham, MA at 12:00Z on 2007-08-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 85 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, Chatham, MA at 12:00Z on 2007-08-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 87 square meters per square second.1939Sfc1 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
85 J/kg
Mixed-layer CIN
-64 J/kg
Mixed-layer LCL
1240 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
87 m²/s²
0-3 km storm-relative helicity
78 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 13, 1:45 PM EDTSevere Thunderstorm WarningGYXYork45 min
Aug 13, 3:14 PM EDTSpecial Marine WarningGYX61 min
Aug 13, 3:22 PM EDTSevere Thunderstorm WarningGYXKennebec38 min
Aug 13, 4:13 PM EDTSpecial Marine WarningGYX62 min
Aug 13, 4:22 PM EDTSevere Thunderstorm WarningGYXKennebec, Sagadahoc38 min
Aug 13, 5:24 PM EDTSpecial Marine WarningGYX66 min

Nearby

Severe Thunderstorm Warnings in Maine, 2007Every severe thunderstorm warning in 2007

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.