Alert archive / Maine / Special Weather Statements in 2021

Special Weather Statement, NWS Caribou, ME

July 14, 2021Washington County, Maine

NWS Caribou, ME issued this special weather statement at Jul 14, 2021, 11:10 PM EDT for Washington County, Maine. It was in force for 65 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jul 14, 2021, 11:10 PM EDT (03:10 UTC)
Expired
Jul 15, 2021, 12:15 AM EDT
In force
65 min
Issued by
NWS Caribou, ME

County Washington County, ME

The radar

The Caribou radar (KCBW), 149 km from the middle of the area, began a volume at 03:13 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 nearest sounding before it

Caribou, ME (KCAR), launched 00:00Z, 3.2 hours before the alert went out and 241 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 00:00Z on 2021-07-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 73 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 00:00Z on 2021-07-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 250 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
73 J/kg
Mixed-layer CIN
-106 J/kg
Mixed-layer LCL
472 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
250 m²/s²
0-3 km storm-relative helicity
267 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

081 
WWUS81 KCAR 150310
SPSCAR

Special Weather Statement
National Weather Service Caribou ME
1110 PM EDT Wed Jul 14 2021

MEZ017-030-150415-
Coastal Washington-Central Washington-
1110 PM EDT Wed Jul 14 2021

...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN WASHINGTON
COUNTY...

At 1109 PM EDT, a strong thunderstorm was located over Jonesboro, or
near Machias, moving east at 25 mph.

Winds in excess of 40 mph and half inch hail are possible with this
storm.

Locations impacted include...
Machias, Lubec, Eastport, Jonesport, Perry, Pembroke, Jonesboro,
Columbia Falls, Cutler, Centerville, East Machias, Machiasport,
Marshfield, Whiting, Dennysville, Roque Bluffs, Whitneyville,
Northfield, Marion and Trescott.

This includes US Highway 1 between Jonesboro and Perry.
 
Torrential rainfall is also occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

LAT...LON 4477 6695 4473 6703 4470 6706 4458 6766
      4474 6775 4503 6707 4488 6697 4486 6698
      4483 6697 4482 6695
TIME...MOT...LOC 0309Z 248DEG 23KT 4469 6759 

$$

LaFlash/Hewitt

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 14, 8:53 PM EDTDense Fog AdvisoryCARHancock, Penobscot, Piscataquis, Washington11 hr
Jul 14, 10:25 PM EDTSpecial Weather StatementCARWashington35 min

Nearby

Special Weather Statements in Maine, 2021Every special weather statement in 2021

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.