Alert archive / Maine / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 9, NWS Caribou, ME

June 19, 2021Hancock County, Penobscot County, Piscataquis County, Maine

NWS Caribou, ME issued this severe thunderstorm warning at Jun 19, 2021, 3:44 PM EDT for Hancock County, Penobscot County, Piscataquis County, Maine. It was in force for 61 min. 3 reports 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, 3:44 PM EDT (19:44 UTC)
Expired: Jun 19, 2021, 4:45 PM EDT
In force: 61 min
Issued by: NWS Caribou, ME
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Hancock County, ME, Penobscot County, ME, Piscataquis County, ME

The radar

The Portland,ME radar (KGYX), 139 km from the middle of the area, began a volume at 19:43 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, 3:51 PM EDT	TSTM WND DMG	Charleston, ME	MULTIPLE TREES DOWN. TIME ESTIMATED VIA RADAR.
Jun 19, 4:21 PM EDT	HAIL 0.25	1 N Bangor, ME
Jun 19, 4:31 PM EDT	HAIL 0.5	2 Nw Orono, ME	REPORT FROM MPING: HALF-INCH (0.50 IN.).

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

The nearest sounding before it

Gray, ME (KGYX), launched 12:00Z, 7.7 hours before the alert went out and 140 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: 935 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 85 m²/s²
0-3 km storm-relative helicity: 86 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

940 
WUUS51 KCAR 191944
SVRCAR
MEC009-019-021-192045-
/O.NEW.KCAR.SV.W.0009.210619T1944Z-210619T2045Z/

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

The National Weather Service in Caribou Maine has issued a

* Severe Thunderstorm Warning for...
  Central Hancock County in southeastern Maine...
  Southeastern Piscataquis County in north central Maine...
  Southwestern Penobscot County in east central Maine...

* Until 445 PM EDT.

* At 343 PM EDT, a severe thunderstorm was located near Newport, 
  moving southeast at 45 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...
  Bangor, Old Town, Ellsworth, Bucksport, Dover-Foxcroft, Dexter,
  Newport, Blue Hill, Orono, Brewer, Hampden, Hermon, Corinth,
  Veazie, Dedham, Castine, Kenduskeag, Verona Island, Penobscot
  Township and Indian Island.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Prepare immediately for large hail and damaging winds. People outside
should move immediately to shelter inside a strong building. Stay
away from windows.

Large hail and damaging winds and continuous cloud to ground
lightning is occurring with this storm. Move indoors immediately.
Lightning is one of nature's leading killers. Remember, if you can
hear thunder, you are close enough to be struck by lightning.

&&

LAT...LON 4443 6873 4445 6871 4447 6873 4444 6880
      4445 6878 4450 6877 4453 6880 4457 6879
      4457 6881 4463 6884 4467 6881 4470 6884
      4464 6918 4472 6920 4473 6927 4495 6932
      4518 6921 4512 6815 4435 6835
TIME...MOT...LOC 1943Z 295DEG 46KT 4472 6917 

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

Norcross

2 follow-up statements

964 
WWUS51 KCAR 192020
SVSCAR

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

MEC021-192024-
/O.CAN.KCAR.SV.W.0009.000000T0000Z-210619T2045Z/
Piscataquis ME-
420 PM EDT Sat Jun 19 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN PISCATAQUIS
COUNTY IS CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

LAT...LON 4443 6873 4445 6871 4447 6873 4444 6880
      4446 6878 4450 6877 4453 6880 4457 6879
      4457 6881 4463 6884 4468 6881 4470 6885
      4468 6904 4473 6909 4476 6916 4495 6917
      4511 6899 4512 6815 4435 6835
TIME...MOT...LOC 2014Z 295DEG 46KT 4455 6867 

$$

MEC009-019-192045-
/O.CON.KCAR.SV.W.0009.000000T0000Z-210619T2045Z/
Hancock ME-Penobscot ME-
420 PM EDT Sat Jun 19 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM EDT
FOR CENTRAL HANCOCK AND SOUTHWESTERN PENOBSCOT COUNTIES...

At 414 PM EDT, an area of severe thunderstorms extended from near 
Bradfford to near Bucksport, moving southeast at 45 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...
Bangor, Old Town, Ellsworth, Bucksport, Blue Hill, Orono, Brewer,
Hampden, Hermon, Corinth, Veazie, Dedham, Castine, Kenduskeag, Verona
Island, Penobscot Township, Indian Island, East Corinth, Grand Falls
and Franklin.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Prepare immediately for large hail and damaging winds. People outside
should move to a shelter, inside a strong building and away from
windows.

Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.

&&

LAT...LON 4443 6873 4445 6871 4447 6873 4444 6880
      4446 6878 4450 6877 4453 6880 4457 6879
      4457 6881 4463 6884 4468 6881 4470 6885
      4468 6904 4473 6909 4476 6916 4495 6917
      4511 6899 4512 6815 4435 6835
TIME...MOT...LOC 2014Z 295DEG 46KT 4455 6867 

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

Norcross

910 
WWUS51 KCAR 192041
SVSCAR

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

MEC009-019-192050-
/O.EXP.KCAR.SV.W.0009.000000T0000Z-210619T2045Z/
Hancock ME-Penobscot ME-
441 PM EDT Sat Jun 19 2021

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL HANCOCK AND
SOUTHWESTERN PENOBSCOT COUNTIES WILL EXPIRE AT 445 PM EDT...
                
The storm which prompted the warning has weakened below severe
limits, but frequent cloud to ground lightning and heavy downpours
are still likely. Therefore, the warning will be allowed to expire.

LAT...LON 4443 6873 4445 6871 4447 6873 4444 6880
      4446 6878 4450 6877 4453 6880 4457 6879
      4457 6881 4463 6884 4468 6881 4470 6885
      4468 6904 4473 6909 4476 6916 4495 6917
      4511 6899 4512 6815 4435 6835
TIME...MOT...LOC 2040Z 295DEG 46KT 4441 6826 

$$

Norcross

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, 3:27 PM EDT	Severe Thunderstorm Warning	CAR	Aroostook, Penobscot	48 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, 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.