Alert archive / Maine / Special Weather Statements in 2021

Special Weather Statement, NWS Caribou, ME

August 7, 2021

NWS Caribou, ME issued this special weather statement at Aug 7, 2021, 5:13 PM EDT. It was in force for 17 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
Aug 7, 2021, 5:13 PM EDT (21:13 UTC)
Expired
Aug 7, 2021, 5:30 PM EDT
In force
17 min
Issued by
NWS Caribou, ME
Hail
0.25 in
Wind
40

The radar

The Caribou radar (KCBW), 10 km from the middle of the area, began a volume at 21:16 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 12:00Z, 9.2 hours before the alert went out and 103 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 2021-08-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 13 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 2021-08-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 132 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
13 J/kg
Mixed-layer CIN
-110 J/kg
Mixed-layer LCL
1377 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
132 m²/s²
0-3 km storm-relative helicity
147 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

327 
WWUS81 KCAR 072113
SPSCAR

Special Weather Statement
National Weather Service Caribou ME
513 PM EDT Sat Aug 7 2021
 
MEZ006-072130-
Southeast Aroostook ME-
513 PM EDT Sat Aug 7 2021

...A strong thunderstorm will impact portions of  through 530 PM
EDT...

At 513 PM EDT, Doppler radar was tracking a strong thunderstorm over
Cary Plantation, or 10 miles south of Houlton, moving east at 20 mph.

HAZARD...Winds in excess of 40 mph and pea size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around 
         unsecured objects. Minor damage to outdoor objects is 
         possible.

Locations impacted include...
Hodgdon, Amity, Cary Plantation, Cary and North Amity. 

This includes US Highway 1 between North Amity and Cary.
 
LAT...LON 4592 6787 4601 6790 4606 6778 4594 6778
      4593 6776 4592 6775 4591 6775
TIME...MOT...LOC 2113Z 250DEG 16KT 4598 6782 

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH

$$

MStrauser

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 7, 3:59 PM EDTSpecial Weather StatementCARAroostook16 min
Aug 7, 5:15 PM EDTSpecial Weather StatementCAR15 min
Aug 7, 7:08 PM EDTSpecial Weather StatementCARPenobscot37 min
Aug 7, 7:45 PM EDTSpecial Weather StatementCARPenobscot45 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.