Alert archive / Maine / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 21, NWS Gray, ME
NWS Gray, ME issued this severe thunderstorm warning at Jun 19, 2021, 3:56 PM EDT for Knox County, Waldo County, Maine. It was in force for 49 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, 3:56 PM EDT (19:56 UTC)
- Expired
- Jun 19, 2021, 4:45 PM EDT
- In force
- 49 min
- Issued by
- NWS Gray, ME
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Knox County, ME, Waldo County, ME
The radar
The Portland,ME radar (KGYX), 115 km from the middle of the area, began a volume at 19:59 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, 4:05 PM EDT | TSTM WND DMG | 1 W Monroe, ME | TREES DOWN. |
| Jun 19, 4:10 PM EDT | TSTM WND DMG | Morrill, ME | WALDO COUNTY DISPATCH REPORTS NUMEROUS TREES DOWN ACROSS THE COUNTY, INCLUDING ONE IN THE TOWN OF MORRILL. TIME ESTIMATED FROM RADAR. |
| Jun 19, 4:32 PM EDT | TSTM WND DMG | Stockton Springs, ME | WALDO COUNTY DISPATCH REPORTS NUMEROUS TREES DOWN ACROSS THE COUNTY, INCLUDING ONE THAT FELL AND CAUGHT FIRE IN THE TOWN OF STOCKTON SPRINGS. TIME ESTIMATED FROM RADAR. |
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, 7.9 hours before the alert went out and 115 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.
- 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
The text
As transmitted.
407
WUUS51 KGYX 191956
SVRGYX
MEC013-027-192045-
/O.NEW.KGYX.SV.W.0021.210619T1956Z-210619T2045Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Gray ME
356 PM EDT Sat Jun 19 2021
The National Weather Service in Gray Maine has issued a
* Severe Thunderstorm Warning for...
Northwestern Knox County in south central Maine...
Waldo County in south central Maine...
* Until 445 PM EDT.
* At 355 PM EDT, severe thunderstorms were located along a line
extending from 8 miles northeast of Thorndike to 6 miles northeast
of Liberty to near Palermo, moving southeast at 35 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees. Some power outages expected.
* Locations impacted include...
Belfast, Camden, Lincolnville, Searsport, Thorndike, China,
Liberty, Winterport, Palermo, Stockton Springs, Islesboro,
Rockport, Prospect, Unity, Knox, Albion, Hope, Appleton, Frankfort
and Brooks.
This also includes...
Moose Point State Park.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
If on or near lakes or rivers, 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 4441 6884 4435 6881 4427 6886 4417 6904
4431 6945 4433 6941 4434 6946 4434 6951
4446 6945 4446 6940 4453 6938 4472 6920
4464 6918 4470 6885 4468 6881 4462 6884
4457 6877 4455 6877 4456 6880 4451 6876
TIME...MOT...LOC 1955Z 297DEG 31KT 4464 6914 4447 6923 4434 6946
HAIL...1.00IN
WIND...60MPH
$$
Ekster2 follow-up statements
693
WWUS51 KGYX 192019
SVSGYX
Severe Weather Statement
National Weather Service Gray ME
419 PM EDT Sat Jun 19 2021
MEC013-192028-
/O.CAN.KGYX.SV.W.0021.000000T0000Z-210619T2045Z/
Knox ME-
419 PM EDT Sat Jun 19 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN KNOX COUNTY IS
CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
LAT...LON 4441 6884 4435 6881 4426 6887 4423 6894
4434 6923 4436 6927 4436 6930 4468 6897
4464 6883 4462 6884 4457 6880 4456 6880
4457 6877 4455 6877 4456 6878 4450 6878
4451 6876
TIME...MOT...LOC 2018Z 290DEG 24KT 4461 6891 4446 6904 4431 6923
$$
MEC027-192045-
/O.CON.KGYX.SV.W.0021.000000T0000Z-210619T2045Z/
Waldo ME-
419 PM EDT Sat Jun 19 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM EDT
FOR EASTERN WALDO COUNTY...
At 418 PM EDT, severe thunderstorms were located along a line
extending from near Winterport to near Belfast to 6 miles southeast
of Liberty, moving east at 35 mph.
HAZARD...60 mph wind gusts and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Belfast, Lincolnville, Searsport, Liberty, Winterport, Stockton
Springs, Islesboro, Prospect, Knox, Frankfort, Brooks, Morrill,
Northport, Belmont, Monroe, Searsmont, Waldo, Swanville and
Montville.
This also includes...
Moose Point State Park.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4441 6884 4435 6881 4426 6887 4423 6894
4434 6923 4436 6927 4436 6930 4468 6897
4464 6883 4462 6884 4457 6880 4456 6880
4457 6877 4455 6877 4456 6878 4450 6878
4451 6876
TIME...MOT...LOC 2018Z 290DEG 24KT 4461 6891 4446 6904 4431 6923
HAIL...0.88IN
WIND...60MPH
$$351
WWUS51 KGYX 192035
SVSGYX
Severe Weather Statement
National Weather Service Gray ME
435 PM EDT Sat Jun 19 2021
MEC027-192045-
/O.CON.KGYX.SV.W.0021.000000T0000Z-210619T2045Z/
Waldo ME-
435 PM EDT Sat Jun 19 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM EDT
FOR SOUTHEASTERN WALDO COUNTY...
At 434 PM EDT, severe thunderstorms were located along a line
extending from near Prospect to Searsport to near Liberty, moving
east at 35 mph.
HAZARD...60 mph wind gusts and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Belfast, Lincolnville, Searsport, Liberty, Stockton Springs,
Prospect, Islesboro, Belmont, Searsmont, Northport, Morrill,
Montville and Waldo.
This also includes...
Moose Point State Park.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4441 6884 4439 6883 4429 6911 4434 6923
4436 6927 4436 6930 4442 6924 4447 6896
4458 6881 4456 6880 4457 6877 4455 6877
4456 6878 4453 6880 4450 6878 4451 6876
TIME...MOT...LOC 2034Z 292DEG 30KT 4456 6878 4446 6891 4436 6937
HAIL...0.88IN
WIND...60MPH
$$The office that day
Everything else NWS Gray, ME issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 19, 2:33 PM EDT | Special Weather Statement | GYX | Oxford | 27 min |
| Jun 19, 2:54 PM EDT | Special Weather Statement | GYX | Kennebec | 36 min |
| Jun 19, 3:00 PM EDT | Special Weather Statement | GYX | Cumberland | 30 min |
| Jun 19, 3:08 PM EDT | Special Weather Statement | GYX | Kennebec | 37 min |
| Jun 19, 3:13 PM EDT | Severe Thunderstorm Warning | GYX | Kennebec, Knox, Lincoln, Somerset, Waldo | 47 min |
| Jun 19, 3:36 PM EDT | Special Weather Statement | GYX | Cumberland, Sagadahoc | 24 min |
| Jun 19, 3:47 PM EDT | Special Weather Statement | GYX | Franklin | 28 min |
| Jun 19, 3:58 PM EDT | Special Marine Warning | GYX | 62 min | |
| Jun 19, 4:05 PM EDT | Special Weather Statement | GYX | Kennebec | 25 min |
| Jun 19, 4:17 PM EDT | Special Weather Statement | GYX | Kennebec | 28 min |
| Jun 19, 4:30 PM EDT | Special Weather Statement | GYX | Kennebec | 30 min |
| Jun 19, 4:32 PM EDT | Special Weather Statement | GYX | Waldo | 28 min |
| Jun 19, 4:40 PM EDT | Severe Thunderstorm Warning | GYX | Knox, Waldo | 50 min |
| Jun 19, 4:42 PM EDT | Tornado Warning | GYX | Knox, Waldo | 33 min |
| Jun 19, 4:55 PM EDT | Special Marine Warning | GYX | 65 min | |
| Jun 19, 5:02 PM EDT | Tornado Warning | GYX | Knox, Waldo | 28 min |
Nearby
Severe Thunderstorm Warnings in Maine, 2021Every 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.