Alert archive / Maine / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 19, NWS Caribou, ME
NWS Caribou, ME issued this severe thunderstorm warning at Jun 30, 2021, 9:53 AM EDT for Washington County, Maine. It was in force for 52 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 30, 2021, 9:53 AM EDT (13:53 UTC)
- Expired
- Jun 30, 2021, 10:45 AM EDT
- In force
- 52 min
- Issued by
- NWS Caribou, ME
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
County Washington County, ME
The radar
The Caribou radar (KCBW), 66 km from the middle of the area, began a volume at 13:56 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 30, 10:00 AM EDT | TSTM WND DMG | 1 Ssw Vanceboro, ME | TREE DOWN ON RT 6 NEAR VANCEBORO. TIME ESTIMATED BY RADAR. |
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, 1.9 hours before the alert went out and 159 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
- 8 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 517 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 88 m²/s²
- 0-3 km storm-relative helicity
- 430 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
456
WUUS51 KCAR 301353
SVRCAR
MEC029-301445-
/O.NEW.KCAR.SV.W.0019.210630T1353Z-210630T1445Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Caribou ME
953 AM EDT Wed Jun 30 2021
The National Weather Service in Caribou Maine has issued a
* Severe Thunderstorm Warning for...
Northwestern Washington County in southeastern Maine...
* Until 1045 AM EDT.
* At 953 AM EDT, severe thunderstorms were located along a line
extending from 11 miles north of Vanceboro to near Codyville
Plantation to 8 miles northeast of Springfield, moving east at 50
mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to trees and power lines.
* Locations impacted include...
Vanceboro, Topsfield, Dyer Township, Fowler Township, Codyville
Plantation, Baileyville, Waite, Codyville, Lambert Lake, Dyer,
Fowler, Brookton and Forest.
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 4530 6747 4528 6749 4526 6747 4540 6797
4549 6800 4557 6772 4562 6764 4561 6761
4559 6752 4560 6745 4557 6742 4553 6744
4551 6742 4551 6745 4550 6745 4551 6747
4549 6751 4542 6747 4538 6742
TIME...MOT...LOC 1353Z 286DEG 43KT 4573 6739 4555 6764 4545 6798
HAIL...<.75IN
WIND...60MPH
$$
MStrauser2 follow-up statements
158
WWUS51 KCAR 301417
SVSCAR
Severe Weather Statement
National Weather Service Caribou ME
1017 AM EDT Wed Jun 30 2021
MEC029-301445-
/O.CON.KCAR.SV.W.0019.000000T0000Z-210630T1445Z/
Washington ME-
1017 AM EDT Wed Jun 30 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1045 AM EDT
FOR NORTHWESTERN WASHINGTON COUNTY...
At 1015 AM EDT, severe thunderstorms were located along a line
extending from near Vanceboro to near Codyville Plantation to near
Topsfield, moving southeast at 35 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to trees and power lines.
Locations impacted include...
Vanceboro, Topsfield, Dyer Township, Fowler Township, Codyville
Plantation, Baileyville, Waite, Codyville, Lambert Lake, Dyer and
Fowler.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Torrential rainfall is occurring with these storms, and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.
&&
LAT...LON 4541 6797 4545 6772 4559 6744 4557 6742
4553 6744 4551 6742 4551 6745 4550 6745
4551 6747 4549 6751 4542 6747 4538 6742
4530 6747 4528 6749 4526 6747 4540 6797
TIME...MOT...LOC 1415Z 295DEG 31KT 4549 6737 4541 6762 4537 6783
HAIL...0.75IN
WIND...60MPH
$$
MStrauser956
WWUS51 KCAR 301441
SVSCAR
Severe Weather Statement
National Weather Service Caribou ME
1041 AM EDT Wed Jun 30 2021
MEC029-301450-
/O.EXP.KCAR.SV.W.0019.000000T0000Z-210630T1445Z/
Washington ME-
1041 AM EDT Wed Jun 30 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN WASHINGTON COUNTY
WILL EXPIRE AT 1045 AM EDT...
The storms which prompted the warning have moved out of the area and
the remaining storms south of Waite have weakened. Therefore, the
warning will be allowed to expire.
LAT...LON 4541 6797 4545 6772 4559 6744 4557 6742
4553 6744 4551 6742 4551 6745 4550 6745
4551 6747 4549 6751 4542 6747 4538 6742
4530 6747 4528 6749 4526 6747 4540 6797
TIME...MOT...LOC 1440Z 286DEG 43KT 4541 6697 4533 6722 4529 6743
$$
MStrauserThe office that day
Everything else NWS Caribou, ME issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 30, 8:04 AM EDT | Special Weather Statement | CAR | Piscataquis | 26 min |
| Jun 30, 8:26 AM EDT | Special Weather Statement | CAR | 34 min | |
| Jun 30, 9:21 AM EDT | Special Weather Statement | CAR | Penobscot | 39 min |
| Jun 30, 1:35 PM EDT | Special Marine Warning | CAR | 43 min | |
| Jun 30, 2:25 PM EDT | Severe Thunderstorm Warning | CAR | Hancock, Penobscot | 65 min |
| Jun 30, 3:10 PM EDT | Severe Thunderstorm Warning | CAR | Hancock | 50 min |
| Jun 30, 4:53 PM EDT | Severe Thunderstorm Warning | CAR | Hancock | 52 min |
| Jun 30, 5:03 PM EDT | Special Marine Warning | CAR | 57 min | |
| Jun 30, 5:31 PM EDT | Severe Thunderstorm Warning | CAR | Aroostook, Washington | 29 min |
| Jun 30, 7:49 PM EDT | Special Weather Statement | CAR | Aroostook | 41 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.