Alert archive / Maine / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 7, NWS Caribou, ME

June 19, 2021Aroostook County, Penobscot County, Maine

NWS Caribou, ME issued this severe thunderstorm warning at Jun 19, 2021, 3:27 PM EDT for Aroostook County, Penobscot County, Maine. It was in force for 48 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jun 19, 2021, 3:27 PM EDT (19:27 UTC)
Expired: Jun 19, 2021, 4:15 PM EDT
In force: 48 min
Issued by: NWS Caribou, ME
Area: Storm-based polygon
Tornado: Possible
Hail: 1.0 in
Wind: 60.0 mph

Counties Aroostook County, ME, Penobscot County, ME

The radar

The Caribou radar (KCBW), 56 km from the middle of the area, began a volume at 19:30 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.

What was reported inside it

Time	Report	Where	Remark
Jun 19, 3:46 PM EDT	HAIL 0.88	1 S Patten, ME	LARGE QUANTITY OF HAIL AROUND NICKEL SIZE.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Caribou, ME (KCAR), launched 12:00Z, 7.5 hours before the alert went out and 106 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 549 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 181 m²/s²
0-3 km storm-relative helicity: 178 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

039 
WUUS51 KCAR 191927
SVRCAR
MEC003-019-192015-
/O.NEW.KCAR.SV.W.0007.210619T1927Z-210619T2015Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Caribou ME
327 PM EDT Sat Jun 19 2021

The National Weather Service in Caribou Maine has issued a

* Severe Thunderstorm Warning for...
  Southeastern Aroostook County in northern Maine...
  North central Penobscot County in east central Maine...

* Until 415 PM EDT.

* At 327 PM EDT, a severe thunderstorm was located near Katahdin
  Woods and Waters National Monument, or 7 miles west of Patten,
  moving east at 25 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Minor hail damage to vehicles is possible. Expect wind 
           damage to trees and power lines.

* Locations impacted include...
  Patten, Sherman, Island Falls, Mount Chase, Sherman Station,
  eastern Katahdin Woods and Waters National Monument, Stacyville,
  Merrill, Crystal, Dyer Brook and Hersey.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4587 6868 4596 6870 4601 6867 4605 6860
      4611 6846 4614 6820 4588 6820
TIME...MOT...LOC 1927Z 271DEG 20KT 4596 6859 

TORNADO...POSSIBLE
HAIL...1.00IN
WIND...60MPH
 
$$

Cornwell

2 follow-up statements

333 
WWUS51 KCAR 191948
SVSCAR

Severe Weather Statement
National Weather Service Caribou ME
348 PM EDT Sat Jun 19 2021

MEC003-019-192015-
/O.CON.KCAR.SV.W.0007.000000T0000Z-210619T2015Z/
Aroostook ME-Penobscot ME-
348 PM EDT Sat Jun 19 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 PM EDT
FOR SOUTHEASTERN AROOSTOOK AND NORTHERN PENOBSCOT COUNTIES...

At 348 PM EDT, a severe thunderstorm was located over Patten, moving
east at 20 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Minor hail damage to vehicles is possible. Expect wind 
         damage to trees and power lines.

Locations impacted include...
Patten, Sherman, Island Falls, Mount Chase, Sherman Station,
Stacyville, Crystal, Dyer Brook and Hersey.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

If on or near an open body of water, get away from the water and 
move indoors or inside a vehicle. remember, lightning can strike out 
to 15 miles from the parent thunderstorm. If you can hear thunder, 
you are close enough to be struck by lightning. Move to safe shelter 
now!  Do not be caught on the water in a thunderstorm.

&&

LAT...LON 4588 6853 4594 6855 4602 6851 4607 6845
      4611 6820 4588 6820
TIME...MOT...LOC 1948Z 271DEG 18KT 4596 6845 

HAIL...1.00IN
WIND...60MPH
 
$$

Cornwell

264 
WWUS51 KCAR 192015
SVSCAR

Severe Weather Statement
National Weather Service Caribou ME
415 PM EDT Sat Jun 19 2021

MEC003-019-192024-
/O.EXP.KCAR.SV.W.0007.000000T0000Z-210619T2015Z/
Aroostook ME-Penobscot ME-
415 PM EDT Sat Jun 19 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN AROOSTOOK AND
NORTHERN PENOBSCOT COUNTIES WILL EXPIRE AT 415 PM EDT...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.  However gusty
winds are still near this thunderstorm.

LAT...LON 4588 6853 4594 6855 4602 6851 4607 6845
      4611 6820 4588 6820
TIME...MOT...LOC 2014Z 271DEG 20KT 4596 6825 

$$

Cornwell

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 19, 1:43 PM EDT	Special Weather Statement	CAR		32 min
Jun 19, 2:17 PM EDT	Special Weather Statement	CAR	Aroostook	28 min
Jun 19, 2:51 PM EDT	Severe Thunderstorm Warning	CAR	Aroostook	24 min
Jun 19, 3:19 PM EDT	Areal Flood Advisory	CAR	Aroostook	42 min
Jun 19, 3:35 PM EDT	Special Weather Statement	CAR	Waldo	40 min
Jun 19, 3:41 PM EDT	Severe Thunderstorm Warning	CAR	Aroostook, Penobscot, Piscataquis	64 min
Jun 19, 3:44 PM EDT	Severe Thunderstorm Warning	CAR	Hancock, Penobscot, Piscataquis	61 min
Jun 19, 4:12 PM EDT	Severe Thunderstorm Warning	CAR	Aroostook	63 min
Jun 19, 4:49 PM EDT	Beach Hazards Statement	CAR	Hancock, Washington	27 hr
Jun 19, 4:57 PM EDT	Severe Thunderstorm Warning	CAR	Aroostook	18 min
Jun 19, 5:17 PM EDT	Special Marine Warning	CAR		58 min
Jun 19, 5:26 PM EDT	Severe Thunderstorm Warning	CAR	Hancock	64 min
Jun 19, 5:28 PM EDT	Severe Thunderstorm Warning	CAR	Aroostook	48 min
Jun 19, 5:38 PM EDT	Areal Flood Advisory	CAR	Aroostook	45 min
Jun 19, 6:12 PM EDT	Special Marine Warning	CAR		47 min

Nearby

Severe Thunderstorm Warnings in Maine, 2021 Every severe thunderstorm warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.