Alert archive / Maine / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 54, NWS Caribou, ME

July 4, 2011Aroostook County, Maine

NWS Caribou, ME issued this severe thunderstorm warning at Jul 4, 2011, 6:46 PM EDT for Aroostook County, Maine. It was in force for 30 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, 2011, 6:46 PM EDT (22:46 UTC)
Expired: Jul 4, 2011, 7:16 PM EDT
In force: 30 min
Issued by: NWS Caribou, ME
Area: Storm-based polygon

County Aroostook County, ME

The radar

The Caribou radar (KCBW), 92 km from the middle of the area, began a volume at 22:49 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.

Issued	Product	Office	Lasted
Jul 4, 12:10 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Caribou, ME (KCAR), launched 12:00Z, 10.8 hours before the alert went out and 51 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 28 J/kg
Mixed-layer CIN: -57 J/kg
Mixed-layer LCL: 584 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 26 m²/s²
0-3 km storm-relative helicity: 56 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Caribou, ME wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 4, 6:01 PM EDT, 45 minutes earlier.

Area forecast discussion, Jul 4, 6:01 PM EDT, 45 minutes before

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Hazardous weather outlook, Jul 4, 6:01 PM EDT, 45 minutes before

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In the hours before

Local storm report, Jul 4, 4:10 PM EDT, 2 hours 36 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CARIBOU ME
410 PM EDT MON JUL 04 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0340 PM     HAIL             LEVANT                  44.87N 68.94W
07/04/2011  E1.00 INCH       PENOBSCOT          ME   CO-OP OBSERVER

&&

LEEF

Local storm report, Jul 4, 4:19 PM EDT, 2 hours 27 minutes before

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Local storm report, Jul 4, 4:44 PM EDT, 2 hours 2 minutes before

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Local storm report, Jul 4, 4:47 PM EDT, 1 hour 59 minutes before

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Local storm report, Jul 4, 5:27 PM EDT, 1 hour 19 minutes before

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Local storm report, Jul 4, 6:38 PM EDT, 8 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 4, 12:35 PM EDT	Severe Thunderstorm Warning	CAR	Piscataquis, Somerset	40 min
Jul 4, 1:11 PM EDT	Severe Thunderstorm Warning	CAR	Aroostook	22 min
Jul 4, 1:16 PM EDT	Severe Thunderstorm Warning	CAR	Piscataquis, Somerset	59 min
Jul 4, 1:39 PM EDT	Severe Thunderstorm Warning	CAR	Aroostook	51 min
Jul 4, 1:46 PM EDT	Severe Thunderstorm Warning	CAR	Piscataquis	44 min
Jul 4, 1:51 PM EDT	Severe Thunderstorm Warning	CAR	Aroostook	54 min
Jul 4, 2:19 PM EDT	Severe Thunderstorm Warning	CAR	Aroostook	41 min
Jul 4, 2:41 PM EDT	Severe Thunderstorm Warning	CAR	Penobscot, Piscataquis	49 min
Jul 4, 3:01 PM EDT	Severe Thunderstorm Warning	CAR	Aroostook	59 min
Jul 4, 3:07 PM EDT	Flash Flood Warning	CAR	Aroostook	113 min
Jul 4, 3:29 PM EDT	Severe Thunderstorm Warning	CAR	Penobscot	46 min
Jul 4, 4:12 PM EDT	Severe Thunderstorm Warning	CAR	Hancock, Penobscot	33 min

Nearby

Severe Thunderstorm Warnings in Maine, 2011 Every severe thunderstorm warning in 2011

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.