Alert archive / Maine / Tornado Warnings in 2021

Tornado Warning 2, NWS Caribou, ME

June 21, 2021Aroostook County, Piscataquis County, Maine

NWS Caribou, ME issued this tornado warning at Jun 21, 2021, 4:14 PM EDT for Aroostook County, Piscataquis County, Maine. It was in force for 46 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
Jun 21, 2021, 4:14 PM EDT (20:14 UTC)
Expired
Jun 21, 2021, 5:00 PM EDT
In force
46 min
Issued by
NWS Caribou, ME
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

Counties Aroostook County, ME, Piscataquis County, ME

The radar

The Caribou radar (KCBW), 94 km from the middle of the area, began a volume at 20:15 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, 8.2 hours before the alert went out and 78 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 2021-06-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Caribou, ME at 12:00Z on 2021-06-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 51 square meters per square second.19395878Sfc1 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
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.

700 
WFUS51 KCAR 212014
TORCAR
MEC003-021-212100-
/O.NEW.KCAR.TO.W.0002.210621T2014Z-210621T2100Z/

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

The National Weather Service in Caribou Maine has issued a

* Tornado Warning for...
  Northeastern Piscataquis County in north central Maine...
  Central Aroostook County in northern Maine...

* Until 500 PM EDT.
    
* At 414 PM EDT, a severe thunderstorm capable of producing a tornado
  was located 12 miles east of Churchill Dam, or 25 miles southeast
  of Clayton Lake, moving east at 35 mph.

  HAZARD...Tornado.

  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...
  Russel Crossing around 445 PM EDT.

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.

If on or near an open body of water, get away from the water and 
move to safe shelter immediately. If you can hear thunder, you are 
close enough to be struck by lightning. Severe thunderstorms can 
produce large capsizing waves, even on small bodies of water. Move 
into dock and seek safe shelter now! Do not be caught on the water 
in a thunderstorm.

&&

LAT...LON 4640 6855 4638 6915 4647 6917 4656 6906
      4668 6863
TIME...MOT...LOC 2014Z 248DEG 30KT 4645 6903 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

Cornwell
1 follow-up statement
366 
WWUS51 KCAR 212034
SVSCAR

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

MEC003-021-212100-
/O.CON.KCAR.TO.W.0002.000000T0000Z-210621T2100Z/
Piscataquis ME-Aroostook ME-
434 PM EDT Mon Jun 21 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 500 PM EDT FOR
NORTHEASTERN PISCATAQUIS AND CENTRAL AROOSTOOK COUNTIES...
    
At 433 PM EDT, a severe thunderstorm capable of producing a tornado
was located 10 miles northwest of Moosehorn Crossing, or 28 miles
southwest of Portage, moving east at 40 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...
  Oxbow around 505 PM EDT.

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.

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

&&

LAT...LON 4639 6894 4645 6902 4660 6893 4668 6863
      4640 6855
TIME...MOT...LOC 2033Z 249DEG 33KT 4647 6888 

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

$$

Cornwell

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 21, 2:02 PM EDTSevere Thunderstorm WarningCARPiscataquis, Somerset58 min
Jun 21, 3:20 PM EDTSevere Thunderstorm WarningCARAroostook, Piscataquis, Somerset40 min
Jun 21, 3:39 PM EDTTornado WarningCARAroostook, Piscataquis36 min
Jun 21, 4:59 PM EDTTornado WarningCARAroostook46 min
Jun 21, 5:37 PM EDTSevere Thunderstorm WarningCARAroostook53 min
Jun 21, 5:55 PM EDTDense Fog AdvisoryCARHancock, Washington12 hr
Jun 21, 6:29 PM EDTSevere Thunderstorm WarningCARAroostook31 min
Jun 21, 6:34 PM EDTAreal Flood AdvisoryCARAroostook103 min
Jun 21, 7:44 PM EDTSpecial Weather StatementCARPiscataquis61 min

Nearby

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