Alert archive / Maine / Tornado Warnings in 2021

Tornado Warning 3, NWS Caribou, ME

June 21, 2021Aroostook County, Maine

NWS Caribou, ME issued this tornado warning at Jun 21, 2021, 4:59 PM EDT for Aroostook County, Maine. It was in force for 46 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 21, 2021, 4:59 PM EDT (20:59 UTC)
Expired: Jun 21, 2021, 5:45 PM EDT
In force: 46 min
Issued by: NWS Caribou, ME
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

County Aroostook County, ME

The radar

The Caribou radar (KCBW), 84 km from the middle of the area, began a volume at 20:58 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 21, 5:30 PM EDT	TSTM WND DMG	3 Ne Ashland, ME	MULTIPLE TREES DOWN VIA SOCIAL MEDIA.

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, 9.0 hours before the alert went out and 53 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: 1363 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 51 m²/s²
0-3 km storm-relative helicity: 113 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

045 
WFUS51 KCAR 212059
TORCAR
MEC003-212145-
/O.NEW.KCAR.TO.W.0003.210621T2059Z-210621T2145Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Caribou ME
459 PM EDT Mon Jun 21 2021

The National Weather Service in Caribou Maine has issued a

* Tornado Warning for...
  East central Aroostook County in northern Maine...

* Until 545 PM EDT.
    
* At 458 PM EDT, a severe thunderstorm capable of producing a tornado
  was located 7 miles southeast of Russel Crossing, or 15 miles
  southwest of Portage, moving northeast at 35 mph.

  HAZARD...Tornado and quarter size hail.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* This dangerous storm will be near...
  Nashville Plantation around 520 PM EDT.
  Ashland around 530 PM EDT.

Other locations impacted by this tornadic thunderstorm include Scopan
Mountain, Squa Pan, Castle Hill, Garfield, Nashville, Chapman and
Wade.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

To report severe weather, contact the National Weather Service office
in Caribou Maine, by calling 1-800-909-
5970 or visit https://inws.ncep.noaa.gov/report. You may also contact
your nearest law enforcement.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4647 6873 4659 6878 4666 6873 4680 6827
      4653 6810
TIME...MOT...LOC 2058Z 240DEG 29KT 4656 6862 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

Cornwell

2 follow-up statements

873 
WWUS51 KCAR 212112
SVSCAR

Severe Weather Statement
National Weather Service Caribou ME
512 PM EDT Mon Jun 21 2021

MEC003-212145-
/O.CON.KCAR.TO.W.0003.000000T0000Z-210621T2145Z/
Aroostook ME-
512 PM EDT Mon Jun 21 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 545 PM EDT FOR EAST
CENTRAL AROOSTOOK COUNTY...
    
At 512 PM EDT, a severe thunderstorm capable of producing a tornado
was located near Ashland, or 12 miles south of Portage, moving east
at 25 mph.

HAZARD...Tornado and quarter size hail.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

This dangerous storm will be near...
  Nashville Plantation around 525 PM EDT.
  Ashland around 540 PM EDT.

Other locations impacted by this tornadic thunderstorm include Scopan
Mountain, Squa Pan, Castle Hill, Garfield, Nashville, Chapman and
Wade.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

To report severe weather, contact the National Weather Service office
in Caribou Maine, by calling 1-800-909-
5970 or visit https://inws.ncep.noaa.gov/report.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4650 6856 4659 6863 4669 6863 4680 6827
      4653 6810
TIME...MOT...LOC 2112Z 248DEG 22KT 4659 6852 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

Cornwell

239 
WWUS51 KCAR 212144
SVSCAR

Severe Weather Statement
National Weather Service Caribou ME
544 PM EDT Mon Jun 21 2021

MEC003-212151-
/O.EXP.KCAR.TO.W.0003.000000T0000Z-210621T2145Z/
Aroostook ME-
544 PM EDT Mon Jun 21 2021

...THE TORNADO WARNING FOR EAST CENTRAL AROOSTOOK COUNTY WILL EXPIRE
AT 545 PM EDT...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.

Remember, a Severe Thunderstorm Warning still remains in effect for
east central Aroostook County.

LAT...LON 4650 6856 4659 6863 4669 6863 4680 6827
      4653 6810
TIME...MOT...LOC 2141Z 241DEG 30KT 4668 6827 

$$

Cornwell

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 21, 2:02 PM EDT	Severe Thunderstorm Warning	CAR	Piscataquis, Somerset	58 min
Jun 21, 3:20 PM EDT	Severe Thunderstorm Warning	CAR	Aroostook, Piscataquis, Somerset	40 min
Jun 21, 3:39 PM EDT	Tornado Warning	CAR	Aroostook, Piscataquis	36 min
Jun 21, 4:14 PM EDT	Tornado Warning	CAR	Aroostook, Piscataquis	46 min
Jun 21, 5:37 PM EDT	Severe Thunderstorm Warning	CAR	Aroostook	53 min
Jun 21, 5:55 PM EDT	Dense Fog Advisory	CAR	Hancock, Washington	12 hr
Jun 21, 6:29 PM EDT	Severe Thunderstorm Warning	CAR	Aroostook	31 min
Jun 21, 6:34 PM EDT	Areal Flood Advisory	CAR	Aroostook	103 min
Jun 21, 7:44 PM EDT	Special Weather Statement	CAR	Piscataquis	61 min

Nearby

Tornado Warnings in Maine, 2021 Every tornado warning in 2021 Tornadoes 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.