Alert archive / New York / Severe Thunderstorm Warnings in 2018
Severe Thunderstorm Warning 67, NWS Buffalo, NY
NWS Buffalo, NY issued this severe thunderstorm warning at Sep 21, 2018, 5:54 PM EDT for 5 counties in New York. It was in force for 66 min. 11 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
- Sep 21, 2018, 5:54 PM EDT (21:54 UTC)
- Expired
- Sep 21, 2018, 7:00 PM EDT
- In force
- 66 min
- Issued by
- NWS Buffalo, NY
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Allegany County, NY, Cattaraugus County, NY, Chautauqua County, NY, Erie County, NY, Wyoming County, NY
The radar
The Buffalo radar (KBUF), 69 km from the middle of the area, began a volume at 21:52 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 |
|---|---|---|---|
| Sep 21, 5:54 PM EDT | TSTM WND DMG | Gerry, NY | TREE DOWN |
| Sep 21, 5:56 PM EDT | TSTM WND DMG | 1 Nw East Aurora, NY | TREE ON HOUSE IN GIRARD AVE |
| Sep 21, 6:02 PM EDT | TSTM WND DMG | Ellington, NY | TREES DOWN |
| Sep 21, 6:16 PM EDT | TSTM WND DMG | Little Valley, NY | TREES AND WIRES DOWN |
| Sep 21, 6:20 PM EDT | TSTM WND DMG | Java Center, NY | TREE AND WIRES DOWN. |
| Sep 21, 6:22 PM EDT | TSTM WND DMG | Ellicottville, NY | TREES DOWN |
| Sep 21, 6:26 PM EDT | TSTM WND DMG | 1 Se Salamanca, NY | TREES AND WIRES DOWN ON JEFFERSON ST, CLINTON ST, AND FRONT AVE. |
| Sep 21, 6:27 PM EDT | TSTM WND DMG | 2 Ene Salamanca, NY | TREE DOWN IN KILLBUCK |
| Sep 21, 6:29 PM EDT | TSTM WND DMG | Warsaw, NY | TREES AND WIRES DOWN. |
| Sep 21, 6:30 PM EDT | TSTM WND DMG | Great Valley, NY | TREE AND WIRES DOWN |
| Sep 21, 6:40 PM EDT | TSTM WND DMG | Castile, NY | TREES AND WIRES DOWN. |
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 |
|---|---|---|---|
| Sep 21, 4:50 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 9.9 hours before the alert went out and 68 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
- 445 J/kg
- Mixed-layer CIN
- -72 J/kg
- Mixed-layer LCL
- 1045 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 334 m²/s²
- 0-3 km storm-relative helicity
- 332 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 4.9
The text
As transmitted.
055 WUUS51 KBUF 212154 SVRBUF NYC003-009-013-029-121-212300- /O.NEW.KBUF.SV.W.0067.180921T2154Z-180921T2300Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Buffalo NY 554 PM EDT FRI SEP 21 2018 The National Weather Service in Buffalo has issued a * Severe Thunderstorm Warning for... Wyoming County in western New York... Cattaraugus County in western New York... Erie County in western New York... Chautauqua County in western New York... Western Allegany County in western New York... * Until 700 PM EDT.. * At 553 PM EDT, severe thunderstorms were located along a line extending from West Seneca to near Clymer, moving east at 60 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * Locations impacted include... West Seneca, Jamestown, Lackawanna, Olean, Hamburg, East Aurora, Salamanca, Allegany State Park, Boston and Eden. This includes the following highways... Interstate 90 between exits 58 and 55. Interstate 86 between exits 7 and 28. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. Damaging winds and frequent 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. && LAT...LON 4200 7973 4283 7884 4285 7798 4200 7822 TIME...MOT...LOC 2153Z 255DEG 53KT 4282 7872 4202 7972 HAIL...<.75IN WIND...60MPH $$ RSH
3 follow-up statements
632 WWUS51 KBUF 212211 SVSBUF Severe Weather Statement National Weather Service Buffalo NY 611 PM EDT FRI SEP 21 2018 NYC003-009-013-029-121-212300- /O.CON.KBUF.SV.W.0067.000000T0000Z-180921T2300Z/ Wyoming NY-Cattaraugus NY-Erie NY-Chautauqua NY-Allegany NY- 611 PM EDT FRI SEP 21 2018 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 PM EDT FOR WYOMING...CATTARAUGUS...SOUTHEASTERN ERIE...SOUTHEASTERN CHAUTAUQUA AND WESTERN ALLEGANY COUNTIES... At 611 PM EDT, severe thunderstorms were located along a line extending from near Darien Lakes State Park to near Lakewood, moving east at 60 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. Locations impacted include... Jamestown, Olean, East Aurora, Salamanca, Allegany State Park, Boston, Marilla, Springville, Perry and Warsaw. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. Intense thunderstorm lines can produce brief tornadoes and widespread significant wind damage. Although a tornado is not immediately likely, it is best to move to an interior room on the lowest floor of a building. These storms may cause serious injury and significant property damage. && LAT...LON 4200 7960 4284 7858 4285 7798 4200 7822 TIME...MOT...LOC 2211Z 255DEG 53KT 4288 7842 4208 7942 HAIL...<.75IN WIND...60MPH $$ Reynolds
697
WWUS51 KBUF 212239
SVSBUF
Severe Weather Statement
National Weather Service Buffalo NY
639 PM EDT FRI SEP 21 2018
NYC013-029-212246-
/O.CAN.KBUF.SV.W.0067.000000T0000Z-180921T2300Z/
Erie NY-Chautauqua NY-
639 PM EDT FRI SEP 21 2018
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN ERIE AND
SOUTHEASTERN CHAUTAUQUA 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 4200 7906 4249 7866 4254 7846 4273 7846
4284 7837 4285 7798 4200 7822
TIME...MOT...LOC 2236Z 277DEG 53KT 4271 7809 4206 7876
$$
NYC003-009-121-212300-
/O.CON.KBUF.SV.W.0067.000000T0000Z-180921T2300Z/
Wyoming NY-Cattaraugus NY-Allegany NY-
639 PM EDT FRI SEP 21 2018
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 PM EDT
FOR WYOMING...CATTARAUGUS AND WESTERN ALLEGANY COUNTIES...
At 636 PM EDT, severe thunderstorms were located along a line
extending from near Warsaw to Allegany State Park, moving east at 60
mph.
HAZARD...60 mph wind gusts.
SOURCE...Law enforcement.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Olean, Salamanca, Allegany State Park, Perry, Warsaw, Ashford,
Arcade, Allegany, Franklinville and Cuba.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
This is a DANGEROUS SITUATION. These storms are producing widespread
wind damage across the Southern Tier. SEEK SHELTER NOW inside a
sturdy structure and stay away from windows.
Intense thunderstorm lines can produce brief tornadoes and widespread
significant wind damage. Although a tornado is not immediately
likely, it is best to move to an interior room on the lowest floor of
a building. These storms may cause serious injury and significant
property damage.
&&
LAT...LON 4200 7906 4249 7866 4254 7846 4273 7846
4284 7837 4285 7798 4200 7822
TIME...MOT...LOC 2236Z 277DEG 53KT 4271 7809 4206 7876
TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
$$
Thomas698
WWUS51 KBUF 212302
SVSBUF
Severe Weather Statement
National Weather Service Buffalo NY
702 PM EDT FRI SEP 21 2018
NYC003-009-121-212311-
/O.EXP.KBUF.SV.W.0067.000000T0000Z-180921T2300Z/
Wyoming NY-Cattaraugus NY-Allegany NY-
702 PM EDT FRI SEP 21 2018
...THE SEVERE THUNDERSTORM WARNING FOR WYOMING...CATTARAUGUS AND
WESTERN ALLEGANY COUNTIES HAS EXPIRED...
The storms which prompted the warning have moved out of the area.
Therefore, the warning has been allowed to expire. However gusty
winds are still possible with these thunderstorms.
A Severe Thunderstorm Watch remains in effect until 1100 PM EDT for
western New York.
LAT...LON 4200 7906 4249 7866 4254 7846 4273 7846
4284 7837 4285 7798 4200 7822
TIME...MOT...LOC 2301Z 269DEG 52KT 4267 7765 4204 7829
$$
ThomasThe office that day
Everything else NWS Buffalo, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 20, 10:00 PM EDT | Beach Hazards Statement | BUF | Chautauqua, Erie, Jefferson, Niagara, Orleans | 22 hr |
| Sep 21, 4:45 PM EDT | Special Marine Warning | BUF | 60 min | |
| Sep 21, 5:15 PM EDT | Severe Thunderstorm Warning | BUF | Cattaraugus, Chautauqua, Erie | 45 min |
| Sep 21, 5:22 PM EDT | Severe Thunderstorm Warning | BUF | Cattaraugus, Chautauqua | 38 min |
| Sep 21, 5:27 PM EDT | Severe Thunderstorm Warning | BUF | Erie, Genesee, Niagara, Orleans | 48 min |
| Sep 21, 6:31 PM EDT | Severe Thunderstorm Warning | BUF | Genesee, Livingston, Monroe, Ontario, Wayne, Wyoming | 59 min |
| Sep 21, 6:38 PM EDT | Special Marine Warning | BUF | 70 min | |
| Sep 21, 6:48 PM EDT | Tornado Warning | BUF | Allegany, Cattaraugus | 42 min |
| Sep 21, 6:51 PM EDT | Severe Thunderstorm Warning | BUF | Allegany | 54 min |
| Sep 21, 7:07 PM EDT | Tornado Warning | BUF | Ontario | 23 min |
| Sep 21, 7:29 PM EDT | Special Marine Warning | BUF | 46 min |
Nearby
Severe Thunderstorm Warnings in New York, 2018Every severe thunderstorm warning in 2018
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.