Alert archive / Maine / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 20, NWS Caribou, ME

June 20, 2010Aroostook County, Washington County, Maine

NWS Caribou, ME issued this severe thunderstorm warning at Jun 20, 2010, 3:11 PM EDT for Aroostook County, Washington County, Maine. It was in force for 49 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
Jun 20, 2010, 3:11 PM EDT (19:11 UTC)
Expired
Jun 20, 2010, 4:00 PM EDT
In force
49 min
Issued by
NWS Caribou, ME
Area
Storm-based polygon

Counties Aroostook County, ME, Washington County, ME

The radar

The Caribou radar (KCBW), 34 km from the middle of the area, began a volume at 19:13 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jun 20, 12:36 PM EDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Caribou, ME (KCAR), launched 12:00Z, 7.2 hours before the alert went out and 118 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, Caribou, ME at 12:00Z on 2010-06-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 182 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, Caribou, ME at 12:00Z on 2010-06-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 46 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
182 J/kg
Mixed-layer CIN
-127 J/kg
Mixed-layer LCL
672 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
46 m²/s²
0-3 km storm-relative helicity
80 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 20, 10:54 AM EDTSevere Thunderstorm WarningCARAroostook51 min
Jun 20, 11:36 AM EDTSevere Thunderstorm WarningCARAroostook54 min
Jun 20, 11:57 AM EDTSevere Thunderstorm WarningCARAroostook48 min
Jun 20, 1:41 PM EDTSevere Thunderstorm WarningCARPenobscot, Washington64 min
Jun 20, 2:21 PM EDTAreal Flood AdvisoryCARAroostook107 min
Jun 20, 4:23 PM EDTSevere Thunderstorm WarningCARWashington37 min

Nearby

Severe Thunderstorm Warnings in Maine, 2010Every severe thunderstorm warning in 2010

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.