Alert archive / Maine / Severe Thunderstorm Warnings in 2006

Severe Thunderstorm Warning 69, NWS Gray, ME

July 4, 2006Oxford County, Maine

NWS Gray, ME issued this severe thunderstorm warning at Jul 4, 2006, 2:23 PM EDT for Oxford County, Maine. It was in force for 67 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
Jul 4, 2006, 2:23 PM EDT (18:23 UTC)
Expired
Jul 4, 2006, 3:30 PM EDT
In force
67 min
Issued by
NWS Gray, ME
Area
Counties, with a storm outline in the text

County Oxford County, ME

The radar

The Portland,ME radar (KGYX), 79 km from the middle of the area, began a volume at 18:26 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, 6.4 hours before the alert went out and 321 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 2006-07-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 731 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 2006-07-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 101 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
731 J/kg
Mixed-layer CIN
-78 J/kg
Mixed-layer LCL
815 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
101 m²/s²
0-3 km storm-relative helicity
127 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.7

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 4, 6:41 AM EDTSpecial Marine WarningGYX64 min
Jul 4, 7:43 AM EDTSpecial Marine WarningGYX92 min
Jul 4, 9:29 AM EDTSpecial Marine WarningGYX91 min
Jul 4, 1:35 PM EDTSevere Thunderstorm WarningGYXOxford55 min
Jul 4, 2:49 PM EDTSevere Thunderstorm WarningGYXSomerset41 min
Jul 4, 3:22 PM EDTSevere Thunderstorm WarningGYXFranklin53 min
Jul 4, 3:25 PM EDTSevere Thunderstorm WarningGYXSomerset80 min

Nearby

Severe Thunderstorm Warnings in Maine, 2006Every severe thunderstorm warning in 2006

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.