Alert archive / New York / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 70, NWS Buffalo, NY
NWS Buffalo, NY issued this severe thunderstorm warning at Jul 13, 2021, 7:15 PM EDT for 5 counties in New York. It was in force for 60 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
- Jul 13, 2021, 7:15 PM EDT (23:15 UTC)
- Expired
- Jul 13, 2021, 8:15 PM EDT
- In force
- 60 min
- Issued by
- NWS Buffalo, NY
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Genesee County, NY, Livingston County, NY, Monroe County, NY, Orleans County, NY, Wayne County, NY
The radar
The Buffalo radar (KBUF), 89 km from the middle of the area, began a volume at 23:16 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 |
|---|---|---|---|
| Jul 13, 7:19 PM EDT | TSTM WND DMG | 4 Sse Churchville, NY | TREES AND WIRES DOWN IN THE WHEATLAND AREA. |
| Jul 13, 7:36 PM EDT | TSTM WND DMG | 1 S Gates-North Gates, NY | TREES AND WIRES DOWN IN GATES. |
| Jul 13, 7:42 PM EDT | TSTM WND DMG | Greece, NY | TREES AND WIRES DOWN IN GREECE. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 13, 1:37 PM EDT | Severe Thunderstorm Watch | SPC | 10 hr |
The nearest sounding before it
Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 11.3 hours before the alert went out and 87 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
- 610 J/kg
- Mixed-layer CIN
- -36 J/kg
- Mixed-layer LCL
- 907 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 56 m²/s²
- 0-3 km storm-relative helicity
- 90 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.9
The text
As transmitted.
122
WUUS51 KBUF 132315
SVRBUF
NYC037-051-055-073-117-140015-
/O.NEW.KBUF.SV.W.0070.210713T2315Z-210714T0015Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Buffalo NY
715 PM EDT Tue Jul 13 2021
The National Weather Service in Buffalo has issued a
* Severe Thunderstorm Warning for...
Northwestern Wayne County in western New York...
Northwestern Livingston County in western New York...
Orleans County in western New York...
Eastern Genesee County in western New York...
Monroe County in western New York...
* Until 815 PM EDT..
* At 715 PM EDT, severe thunderstorms were located along a line
extending from near Holley to near Caledonia, moving northeast at
40 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to vehicles is possible. Expect wind damage
to roofs, siding, and trees.
* Locations impacted include...
Rochester, Greece, Irondequoit, Chili, Brockport, East Rochester,
Albion, Hilton, Webster and Fairport.
This includes the following highways...
Interstate 390 between exits 11 and 12.
Interstate 90 between exits 47 and 46.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Large hail and damaging winds and continuous cloud to ground
lightning is occurring with these storms. Move indoors immediately.
Lightning is one of nature's leading killers. Remember, if you can
hear thunder, you are close enough to be struck by lightning.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4325 7833 4342 7820 4339 7775 4328 7754
4332 7738 4333 7717 4331 7697 4283 7794
TIME...MOT...LOC 2315Z 237DEG 36KT 4325 7806 4303 7792
HAIL...1.00IN
WIND...60MPH
$$
Welch2 follow-up statements
146
WWUS51 KBUF 132349
SVSBUF
Severe Weather Statement
National Weather Service Buffalo NY
749 PM EDT Tue Jul 13 2021
NYC037-073-132358-
/O.CAN.KBUF.SV.W.0070.000000T0000Z-210714T0015Z/
Orleans NY-Genesee NY-
749 PM EDT Tue Jul 13 2021
...THE SEVERE THUNDERSTORM WARNING FOR ORLEANS AND EASTERN GENESEE
COUNTIES IS CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 1100 PM EDT for
western New York.
LAT...LON 4339 7782 4338 7775 4328 7754 4332 7738
4333 7717 4331 7697 4291 7778
TIME...MOT...LOC 2348Z 243DEG 33KT 4336 7764 4301 7769
$$
NYC051-055-117-140015-
/O.CON.KBUF.SV.W.0070.000000T0000Z-210714T0015Z/
Wayne NY-Livingston NY-Monroe NY-
749 PM EDT Tue Jul 13 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM EDT
FOR NORTHWESTERN WAYNE...NORTHERN LIVINGSTON AND CENTRAL MONROE
COUNTIES...
At 748 PM EDT, severe thunderstorms were located along a line
extending from 9 miles northeast of Hilton to near Scottsville,
moving northeast at 35 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Rochester, Greece, Irondequoit, Chili, East Rochester, Hilton,
Webster, Fairport, Brighton and Gates-North Gates.
This includes the following highways...
Interstate 390 between exits 11 and 12.
Interstate 90 near exit 46.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Cloud to ground lightning is occurring with these storms.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4339 7782 4338 7775 4328 7754 4332 7738
4333 7717 4331 7697 4291 7778
TIME...MOT...LOC 2348Z 243DEG 33KT 4336 7764 4301 7769
HAIL...0.75IN
WIND...60MPH
$$
Welch815
WWUS51 KBUF 140016
SVSBUF
Severe Weather Statement
National Weather Service Buffalo NY
816 PM EDT Tue Jul 13 2021
NYC051-055-117-140026-
/O.EXP.KBUF.SV.W.0070.000000T0000Z-210714T0015Z/
Wayne NY-Livingston NY-Monroe NY-
816 PM EDT Tue Jul 13 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN WAYNE...NORTHERN
LIVINGSTON AND CENTRAL MONROE COUNTIES HAS EXPIRED...
The storms which prompted the warning have moved out of the area.
Therefore, the warning has been allowed to expire.
A Severe Thunderstorm Watch remains in effect until 1100 PM EDT for
western New York.
LAT...LON 4339 7782 4338 7775 4328 7754 4332 7738
4333 7717 4331 7697 4291 7778
TIME...MOT...LOC 0016Z 237DEG 36KT 4350 7734 4315 7739
$$
MitchellThe office that day
Everything else NWS Buffalo, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 13, 3:40 AM EDT | Special Weather Statement | BUF | Lewis | 50 min |
| Jul 13, 1:29 PM EDT | Special Weather Statement | BUF | Erie | 46 min |
| Jul 13, 1:56 PM EDT | Special Marine Warning | BUF | 64 min | |
| Jul 13, 2:45 PM EDT | Special Weather Statement | BUF | Monroe | 30 min |
| Jul 13, 3:40 PM EDT | Special Marine Warning | BUF | 50 min | |
| Jul 13, 4:34 PM EDT | Special Marine Warning | BUF | 56 min | |
| Jul 13, 4:41 PM EDT | Severe Thunderstorm Warning | BUF | Chautauqua | 64 min |
| Jul 13, 4:46 PM EDT | Special Weather Statement | BUF | Wayne | 44 min |
| Jul 13, 4:50 PM EDT | Severe Thunderstorm Warning | BUF | Oswego | 55 min |
| Jul 13, 4:59 PM EDT | Special Marine Warning | BUF | 46 min | |
| Jul 13, 5:23 PM EDT | Severe Thunderstorm Warning | BUF | Oswego | 45 min |
| Jul 13, 5:26 PM EDT | Special Marine Warning | BUF | 64 min | |
| Jul 13, 5:33 PM EDT | Special Marine Warning | BUF | 42 min | |
| Jul 13, 5:38 PM EDT | Severe Thunderstorm Warning | BUF | Cattaraugus, Chautauqua, Erie | 52 min |
| Jul 13, 5:41 PM EDT | Severe Thunderstorm Warning | BUF | Lewis, Oswego | 64 min |
| Jul 13, 5:43 PM EDT | Special Weather Statement | BUF | Monroe | 32 min |
| Jul 13, 5:57 PM EDT | Severe Thunderstorm Warning | BUF | Allegany, Cattaraugus, Chautauqua, Erie, Wyoming | 63 min |
| Jul 13, 6:05 PM EDT | Special Marine Warning | BUF | 55 min | |
| Jul 13, 6:07 PM EDT | Special Marine Warning | BUF | 38 min | |
| Jul 13, 6:08 PM EDT | Special Marine Warning | BUF | 52 min | |
| Jul 13, 6:09 PM EDT | Severe Thunderstorm Warning | BUF | Jefferson, Lewis | 53 min |
| Jul 13, 6:19 PM EDT | Severe Thunderstorm Warning | BUF | Erie, Genesee, Niagara, Orleans | 41 min |
| Jul 13, 6:46 PM EDT | Special Marine Warning | BUF | 89 min | |
| Jul 13, 6:55 PM EDT | Severe Thunderstorm Warning | BUF | Niagara, Orleans | 50 min |
| Jul 13, 7:02 PM EDT | Special Marine Warning | BUF | 58 min | |
| Jul 13, 7:05 PM EDT | Special Weather Statement | BUF | Jefferson | 25 min |
| Jul 13, 7:07 PM EDT | Special Marine Warning | BUF | 53 min | |
| Jul 13, 7:27 PM EDT | Special Marine Warning | BUF | 93 min | |
| Jul 13, 7:41 PM EDT | Special Marine Warning | BUF | 94 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.