Alert archive / New York / Severe Thunderstorm Warnings in 2017
Severe Thunderstorm Warning 2, NWS Buffalo, NY
NWS Buffalo, NY issued this severe thunderstorm warning at Apr 30, 2017, 7:37 PM EDT for 4 counties in New York. It was in force for 38 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
- Apr 30, 2017, 7:37 PM EDT (23:37 UTC)
- Expired
- Apr 30, 2017, 8:15 PM EDT
- In force
- 38 min
- Issued by
- NWS Buffalo, NY
- Area
- Storm-based polygon
- Hail
- 0.88 in
- Wind
- 60.0 mph
Counties Genesee County, NY, Livingston County, NY, Monroe County, NY, Wyoming County, NY
The radar
The Buffalo radar (KBUF), 63 km from the middle of the area, began a volume at 23:36 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
Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 11.6 hours before the alert went out and 60 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
- 1392 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 464 m²/s²
- 0-3 km storm-relative helicity
- 647 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
615 WUUS51 KBUF 302337 SVRBUF NYC037-051-055-121-010015- /O.NEW.KBUF.SV.W.0002.170430T2337Z-170501T0015Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Buffalo NY 737 PM EDT SUN APR 30 2017 The National Weather Service in Buffalo has issued a * Severe Thunderstorm Warning for... Northeastern Wyoming County in western New York... Northwestern Livingston County in western New York... South central Monroe County in western New York... Southeastern Genesee County in western New York... * Until 815 PM EDT. * At 737 PM EDT, a severe thunderstorm was located near Warsaw, or 12 miles northwest of Letchworth State Park, moving northeast at 45 mph. HAZARD...60 mph wind gusts and nickel size hail. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * Locations impacted include... Geneseo, Letchworth State Park, Perry, Warsaw, Mount Morris, Pavilion, Caledonia and York. This includes Interstate 390 near exit 7. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 4271 7811 4280 7816 4305 7778 4274 7776 TIME...MOT...LOC 2337Z 243DEG 40KT 4280 7810 HAIL...0.88IN WIND...60MPH $$ RSH
2 follow-up statements
038
WWUS51 KBUF 302358
SVSBUF
Severe Weather Statement
National Weather Service Buffalo NY
758 PM EDT SUN APR 30 2017
NYC037-055-121-010008-
/O.CAN.KBUF.SV.W.0002.000000T0000Z-170501T0015Z/
Wyoming NY-Monroe NY-Genesee NY-
758 PM EDT SUN APR 30 2017
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN WYOMING...SOUTH
CENTRAL MONROE AND SOUTHEASTERN GENESEE COUNTIES IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
LAT...LON 4277 7794 4285 7794 4291 7777 4275 7776
TIME...MOT...LOC 2358Z 250DEG 39KT 4285 7779
$$
NYC051-010015-
/O.CON.KBUF.SV.W.0002.000000T0000Z-170501T0015Z/
Livingston NY-
758 PM EDT SUN APR 30 2017
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM EDT
FOR NORTHWESTERN LIVINGSTON COUNTY...
At 758 PM EDT, a severe thunderstorm was located near Geneseo, moving
east at 45 mph.
HAZARD...60 mph wind gusts and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Geneseo and Leicester.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4277 7794 4285 7794 4291 7777 4275 7776
TIME...MOT...LOC 2358Z 250DEG 39KT 4285 7779
HAIL...0.88IN
WIND...60MPH
$$
RSH697
WWUS51 KBUF 010012
SVSBUF
Severe Weather Statement
National Weather Service Buffalo NY
812 PM EDT SUN APR 30 2017
NYC051-010022-
/O.EXP.KBUF.SV.W.0002.000000T0000Z-170501T0015Z/
Livingston NY-
812 PM EDT SUN APR 30 2017
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN LIVINGSTON COUNTY
WILL EXPIRE AT 815 PM EDT...
The storm which prompted the warning has moved out of the area.
Therefore the warning will be allowed to expire.
LAT...LON 4277 7794 4285 7794 4291 7777 4275 7776
TIME...MOT...LOC 0012Z 243DEG 40KT 4289 7768
$$
RSHThe office that day
Everything else NWS Buffalo, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 30, 2:55 PM EDT | Lakeshore Flood Watch | BUF | Jefferson, Oswego | 13 hr |
| Apr 30, 3:19 PM EDT | Special Weather Statement | BUF | Allegany | 26 min |
| Apr 30, 5:09 PM EDT | Special Weather Statement | BUF | Chautauqua | 36 min |
| Apr 30, 5:45 PM EDT | Special Weather Statement | BUF | Chautauqua | 30 min |
| Apr 30, 5:46 PM EDT | Special Marine Warning | BUF | 59 min | |
| Apr 30, 5:54 PM EDT | Special Weather Statement | BUF | Cattaraugus | 36 min |
| Apr 30, 6:15 PM EDT | Special Weather Statement | BUF | Erie | 45 min |
Nearby
Severe Thunderstorm Warnings in New York, 2017Every severe thunderstorm warning in 2017
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.