Alert archive / New York / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 60, NWS Buffalo, NY
NWS Buffalo, NY issued this severe thunderstorm warning at Jul 8, 2021, 6:15 PM EDT for Jefferson County, Lewis County, New York. It was in force for 60 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
- Jul 8, 2021, 6:15 PM EDT (22:15 UTC)
- Expired
- Jul 8, 2021, 7:15 PM EDT
- In force
- 60 min
- Issued by
- NWS Buffalo, NY
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Jefferson County, NY, Lewis County, NY
The radar
The Ft Drum radar (KTYX), 21 km from the middle of the area, began a volume at 22:17 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
Albany, NY (KALY), launched 12:00Z, 10.3 hours before the alert went out and 192 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
- 578 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 56 m²/s²
- 0-3 km storm-relative helicity
- 126 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
387
WUUS51 KBUF 082215
SVRBUF
NYC045-049-082315-
/O.NEW.KBUF.SV.W.0060.210708T2215Z-210708T2315Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Buffalo NY
615 PM EDT Thu Jul 8 2021
The National Weather Service in Buffalo has issued a
* Severe Thunderstorm Warning for...
Southeastern Jefferson County in central New York...
Central Lewis County in central New York...
* Until 715 PM EDT..
* At 615 PM EDT, a severe thunderstorm was located near Barnes
Corners, or 12 miles southeast of Watertown, moving northeast at 35
mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Carthage, Lowville, West Carthage, Barnes Corners, Denmark, New
Bremen, Copenhagen, Harrisville, Croghan and Castorland.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4370 7587 4395 7576 4416 7530 4410 7517
4383 7514
TIME...MOT...LOC 2215Z 237DEG 29KT 4386 7571
TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
$$
HSK3 follow-up statements
577
WWUS51 KBUF 082243
SVSBUF
Severe Weather Statement
National Weather Service Buffalo NY
643 PM EDT Thu Jul 8 2021
NYC045-049-082315-
/O.CON.KBUF.SV.W.0060.000000T0000Z-210708T2315Z/
Jefferson NY-Lewis NY-
643 PM EDT Thu Jul 8 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM EDT
FOR EAST CENTRAL JEFFERSON AND CENTRAL LEWIS COUNTIES...
At 642 PM EDT, a severe thunderstorm was located 7 miles east of
Carthage, or 16 miles east of Fort Drum, moving northeast at 35 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Lowville, Denmark, New Bremen, Harrisville, Croghan, Castorland,
Belfort, Soft Maple Reservoir, Kirschnerville and Rector.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4373 7571 4404 7555 4416 7530 4410 7517
4383 7514
TIME...MOT...LOC 2242Z 237DEG 29KT 4398 7545
TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
$$
HSK788
WWUS51 KBUF 082253
SVSBUF
Severe Weather Statement
National Weather Service Buffalo NY
653 PM EDT Thu Jul 8 2021
NYC045-082302-
/O.CAN.KBUF.SV.W.0060.000000T0000Z-210708T2315Z/
Jefferson NY-
653 PM EDT Thu Jul 8 2021
...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL JEFFERSON 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 4375 7558 4409 7545 4416 7530 4410 7517
4383 7514
TIME...MOT...LOC 2252Z 237DEG 29KT 4403 7535
$$
NYC049-082315-
/O.CON.KBUF.SV.W.0060.000000T0000Z-210708T2315Z/
Lewis NY-
653 PM EDT Thu Jul 8 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM EDT
FOR NORTHEASTERN LEWIS COUNTY...
At 652 PM EDT, a severe thunderstorm was located 12 miles east of
Carthage, or 20 miles east of Fort Drum, moving northeast at 35 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Lowville, New Bremen, Watson, Harrisville, Croghan, Castorland,
Belfort, Soft Maple Reservoir, Kirschnerville and Beaver Falls.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4375 7558 4409 7545 4416 7530 4410 7517
4383 7514
TIME...MOT...LOC 2252Z 237DEG 29KT 4403 7535
TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
$$
HSK696
WWUS51 KBUF 082314
SVSBUF
Severe Weather Statement
National Weather Service Buffalo NY
714 PM EDT Thu Jul 8 2021
NYC049-082324-
/O.EXP.KBUF.SV.W.0060.000000T0000Z-210708T2315Z/
Lewis NY-
714 PM EDT Thu Jul 8 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN LEWIS COUNTY WILL
EXPIRE AT 715 PM EDT...
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire. However gusty
winds and heavy rain are still possible with this thunderstorm.
LAT...LON 4375 7558 4409 7545 4416 7530 4410 7517
4383 7514
TIME...MOT...LOC 2314Z 252DEG 23KT 4398 7519
$$
HSKThe office that day
Everything else NWS Buffalo, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 7, 8:04 PM EDT | Special Weather Statement | BUF | Allegany, Cattaraugus, Chautauqua | 56 min |
| Jul 7, 8:39 PM EDT | Flash Flood Warning | BUF | Allegany | 3 hr |
| Jul 8, 12:48 PM EDT | Special Weather Statement | BUF | Niagara | 27 min |
| Jul 8, 1:40 PM EDT | Special Weather Statement | BUF | Niagara | 35 min |
| Jul 8, 2:18 PM EDT | Special Weather Statement | BUF | Orleans | 42 min |
| Jul 8, 3:08 PM EDT | Special Weather Statement | BUF | Niagara | 67 min |
| Jul 8, 3:23 PM EDT | Special Marine Warning | BUF | 37 min | |
| Jul 8, 3:34 PM EDT | Special Weather Statement | BUF | Erie | 41 min |
| Jul 8, 3:41 PM EDT | Severe Thunderstorm Warning | BUF | Erie, Niagara | 48 min |
| Jul 8, 3:48 PM EDT | Special Marine Warning | BUF | 57 min | |
| Jul 8, 4:13 PM EDT | Severe Thunderstorm Warning | BUF | Erie, Genesee, Niagara, Orleans | 32 min |
| Jul 8, 4:16 PM EDT | Special Weather Statement | BUF | Oswego | 44 min |
| Jul 8, 4:26 PM EDT | Severe Thunderstorm Warning | BUF | Jefferson, Lewis, Oswego | 49 min |
| Jul 8, 4:29 PM EDT | Special Weather Statement | BUF | Monroe | 61 min |
| Jul 8, 4:37 PM EDT | Special Marine Warning | BUF | 53 min | |
| Jul 8, 4:45 PM EDT | Special Weather Statement | BUF | Genesee, Monroe | 30 min |
| Jul 8, 4:53 PM EDT | Flash Flood Warning | BUF | Monroe, Wayne | 3 hr |
| Jul 8, 5:09 PM EDT | Special Weather Statement | BUF | Lewis | 51 min |
| Jul 8, 5:12 PM EDT | Severe Thunderstorm Warning | BUF | Jefferson, Lewis, Oswego | 63 min |
| Jul 8, 7:52 PM EDT | Special Weather Statement | BUF | Lewis | 38 min |
Nearby
Severe Thunderstorm Warnings in New York, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.