Alert archive / New York / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 25, NWS Buffalo, NY
NWS Buffalo, NY issued this severe thunderstorm warning at Jun 21, 2021, 7:25 AM EDT for Jefferson County, Lewis County, Oswego County, New York. It was in force for 50 min. 2 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 21, 2021, 7:25 AM EDT (11:25 UTC)
- Expired
- Jun 21, 2021, 8:15 AM EDT
- In force
- 50 min
- Issued by
- NWS Buffalo, NY
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Jefferson County, NY, Lewis County, NY, Oswego County, NY
The radar
The Ft Drum radar (KTYX), 24 km from the middle of the area, began a volume at 11:23 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, 7:30 AM EDT | TSTM WND DMG | 1 Ene Sackets Harbor, NY | PORTION OF 10 INCH DIAMETER TREE DOWN ALONG RTE 3. |
| Jun 21, 7:33 AM EDT | TSTM WND DMG | 3 E Lacona, NY | TREES AND WIRES DOWN NEAR INTERSECTION OF R 13 AND RT 15 IN BOYLSTON. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Albany, NY (KALY), launched 00:00Z, 11.4 hours before the alert went out and 215 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
- 152 J/kg
- Mixed-layer CIN
- -33 J/kg
- Mixed-layer LCL
- 1541 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 51 m²/s²
- 0-3 km storm-relative helicity
- 124 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
The text
As transmitted.
155
WUUS51 KBUF 211125
SVRBUF
NYC045-049-075-211215-
/O.NEW.KBUF.SV.W.0025.210621T1125Z-210621T1215Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Buffalo NY
725 AM EDT Mon Jun 21 2021
The National Weather Service in Buffalo has issued a
* Severe Thunderstorm Warning for...
Jefferson County in central New York...
Lewis County in central New York...
Northeastern Oswego County in central New York...
* Until 815 AM EDT..
* At 725 AM EDT, severe thunderstorms were located along a line
extending from 15 miles southwest of Cedar Point State Park to 8
miles south of Pulaski, moving northeast at 65 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Watertown, Fort Drum, Sandy Island Beach State Park, Stony Point,
Carthage, Lowville, Pulaski, West Carthage, Clayton and Adams.
This includes Interstate 81 between exits 33 and 51.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4440 7583 4439 7584 4421 7543 4376 7513
4361 7511 4346 7544 4343 7560 4348 7581
4339 7586 4334 7613 4361 7627 4378 7629
4383 7636 4387 7635 4386 7639 4396 7644
4396 7634 4405 7642 4434 7597
TIME...MOT...LOC 1125Z 235DEG 58KT 4405 7641 4344 7611
HAIL...0.75IN
WIND...60MPH
$$
Apffel3 follow-up statements
667
WWUS51 KBUF 211148
SVSBUF
Severe Weather Statement
National Weather Service Buffalo NY
748 AM EDT Mon Jun 21 2021
NYC045-049-075-211215-
/O.CON.KBUF.SV.W.0025.000000T0000Z-210621T1215Z/
Jefferson NY-Lewis NY-Oswego NY-
748 AM EDT Mon Jun 21 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 AM EDT
FOR JEFFERSON...LEWIS AND NORTHEASTERN OSWEGO COUNTIES...
At 748 AM EDT, severe thunderstorms were located along a line
extending from near Clayton to near Redfield, moving east at 60 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Watertown, Fort Drum, Carthage, Lowville, West Carthage, Clayton,
Dexter, Redfield, Glen Park and Herrings.
This includes Interstate 81 between exits 42 and 51.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4361 7512 4346 7545 4343 7559 4348 7581
4346 7583 4346 7587 4387 7602 4420 7617
4434 7597 4439 7585 4421 7544 4376 7514
TIME...MOT...LOC 1148Z 251DEG 51KT 4421 7606 4354 7578
HAIL...0.75IN
WIND...60MPH
$$
Apffel450
WWUS51 KBUF 211202
SVSBUF
Severe Weather Statement
National Weather Service Buffalo NY
802 AM EDT Mon Jun 21 2021
NYC075-211211-
/O.CAN.KBUF.SV.W.0025.000000T0000Z-210621T1215Z/
Oswego NY-
802 AM EDT Mon Jun 21 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN OSWEGO COUNTY IS
CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
LAT...LON 4362 7523 4349 7562 4392 7578 4433 7594
4439 7585 4421 7544 4376 7526
TIME...MOT...LOC 1201Z 251DEG 51KT 4427 7582 4360 7554
$$
NYC045-049-211215-
/O.CON.KBUF.SV.W.0025.000000T0000Z-210621T1215Z/
Jefferson NY-Lewis NY-
802 AM EDT Mon Jun 21 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 AM EDT
FOR NORTHEASTERN JEFFERSON AND CENTRAL LEWIS COUNTIES...
At 801 AM EDT, severe thunderstorms were located along a line
extending from near Redwood to Highmarket, moving east at 60 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Fort Drum, Carthage, Lowville, West Carthage, Herrings, Redwood,
Kring Point State Park, Highmarket, Whetstone Gulf State Park and
Denmark.
This includes Interstate 81 near exit 49.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4362 7523 4349 7562 4392 7578 4433 7594
4439 7585 4421 7544 4376 7526
TIME...MOT...LOC 1201Z 251DEG 51KT 4427 7582 4360 7554
HAIL...0.75IN
WIND...60MPH
$$
Apffel621
WWUS51 KBUF 211214
SVSBUF
Severe Weather Statement
National Weather Service Buffalo NY
814 AM EDT Mon Jun 21 2021
NYC045-049-211223-
/O.EXP.KBUF.SV.W.0025.000000T0000Z-210621T1215Z/
Jefferson NY-Lewis NY-
814 AM EDT Mon Jun 21 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN JEFFERSON AND
CENTRAL LEWIS COUNTIES WILL EXPIRE AT 815 AM EDT...
The storms which prompted the warning have weakened below severe
limits, and have exited the warned area. Therefore, the warning will
be allowed to expire.
LAT...LON 4362 7523 4349 7562 4392 7578 4433 7594
4439 7585 4421 7544 4376 7526
TIME...MOT...LOC 1213Z 235DEG 58KT 4438 7561 4371 7533
$$
ApffelThe office that day
Everything else NWS Buffalo, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 20, 9:04 PM EDT | Special Weather Statement | BUF | Livingston | 26 min |
| Jun 20, 9:18 PM EDT | Severe Thunderstorm Warning | BUF | Genesee, Livingston, Monroe, Wyoming | 42 min |
| Jun 20, 9:55 PM EDT | Severe Thunderstorm Warning | BUF | Livingston, Monroe, Ontario, Wayne | 39 min |
| Jun 20, 11:23 PM EDT | Special Marine Warning | BUF | 67 min | |
| Jun 20, 11:23 PM EDT | Severe Thunderstorm Warning | BUF | Chautauqua | 52 min |
| Jun 21, 12:07 AM EDT | Special Marine Warning | BUF | 53 min | |
| Jun 21, 12:17 AM EDT | Severe Thunderstorm Warning | BUF | Cattaraugus, Chautauqua, Erie | 43 min |
| Jun 21, 12:30 AM EDT | Special Marine Warning | BUF | 34 min | |
| Jun 21, 1:47 AM EDT | Special Marine Warning | BUF | 43 min | |
| Jun 21, 2:14 AM EDT | Special Weather Statement | BUF | Erie | 46 min |
| Jun 21, 2:30 AM EDT | Special Marine Warning | BUF | 45 min | |
| Jun 21, 2:54 AM EDT | Special Weather Statement | BUF | Erie, Genesee | 51 min |
| Jun 21, 3:20 AM EDT | Special Marine Warning | BUF | 55 min | |
| Jun 21, 3:36 AM EDT | Special Weather Statement | BUF | Monroe, Orleans | 39 min |
| Jun 21, 3:42 AM EDT | Special Weather Statement | BUF | Chautauqua | 63 min |
| Jun 21, 3:50 AM EDT | Special Marine Warning | BUF | 55 min | |
| Jun 21, 4:12 AM EDT | Special Weather Statement | BUF | Chautauqua | 48 min |
| Jun 21, 4:19 AM EDT | Special Marine Warning | BUF | 26 min | |
| Jun 21, 4:28 AM EDT | Beach Hazards Statement | BUF | Cayuga, Chautauqua, Erie, Jefferson, Monroe, Niagara and 3 more | 42 hr |
| Jun 21, 4:31 AM EDT | Special Weather Statement | BUF | Cattaraugus, Erie, Genesee, Wyoming | 44 min |
| Jun 21, 4:48 AM EDT | Special Marine Warning | BUF | 42 min | |
| Jun 21, 5:15 AM EDT | Special Weather Statement | BUF | Allegany, Cattaraugus, Livingston, Wyoming | 75 min |
| Jun 21, 5:48 AM EDT | Severe Thunderstorm Warning | BUF | Livingston, Ontario | 42 min |
| Jun 21, 6:25 AM EDT | Severe Thunderstorm Warning | BUF | Cayuga, Ontario, Wayne | 50 min |
| Jun 21, 6:33 AM EDT | Special Marine Warning | BUF | 57 min | |
| Jun 21, 6:55 AM EDT | Special Weather Statement | BUF | Oswego | 50 min |
| Jun 21, 7:15 AM EDT | Special Marine Warning | BUF | 30 min | |
| Jun 21, 7:20 AM EDT | Special Weather Statement | BUF | Jefferson, Lewis, Oswego | 55 min |
| Jun 21, 1:31 PM EDT | Severe Thunderstorm Warning | BUF | Jefferson | 43 min |
| Jun 21, 1:34 PM EDT | Special Marine Warning | BUF | 56 min | |
| Jun 21, 1:53 PM EDT | Severe Thunderstorm Warning | BUF | Lewis | 67 min |
| Jun 21, 2:01 PM EDT | Special Marine Warning | BUF | 44 min | |
| Jun 21, 2:18 PM EDT | Severe Thunderstorm Warning | BUF | Erie | 42 min |
| Jun 21, 2:18 PM EDT | Severe Thunderstorm Warning | BUF | Lewis | 42 min |
| Jun 21, 2:44 PM EDT | Severe Thunderstorm Warning | BUF | Erie, Genesee, Wyoming | 46 min |
| Jun 21, 3:07 PM EDT | Severe Thunderstorm Warning | BUF | Allegany, Cattaraugus | 53 min |
| Jun 21, 3:18 PM EDT | Severe Thunderstorm Warning | BUF | Genesee, Livingston, Monroe, Ontario, Wyoming | 57 min |
| Jun 21, 3:55 PM EDT | Severe Thunderstorm Warning | BUF | Livingston, Ontario | 50 min |
| Jun 21, 3:58 PM EDT | Severe Thunderstorm Warning | BUF | Monroe, Ontario, Wayne | 47 min |
| Jun 21, 4:25 PM EDT | Special Marine Warning | BUF | 77 min | |
| Jun 21, 4:35 PM EDT | Severe Thunderstorm Warning | BUF | Cayuga, Oswego, Wayne | 55 min |
| Jun 21, 5:02 PM EDT | Severe Thunderstorm Warning | BUF | Jefferson, Lewis, Oswego | 58 min |
| Jun 21, 5:26 PM EDT | Severe Thunderstorm Warning | BUF | Lewis | 64 min |
| Jun 21, 6:21 PM EDT | Severe Thunderstorm Warning | BUF | Lewis | 26 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.