Alert archive / New York / Tornado Watches in 2015
Tornado Watch 274
The Storm Prediction Center issued this tornado watch at Jun 8, 2015, 1:39 PM EDT for 27 counties in New York; 7 counties in Pennsylvania; Bennington County, Vermont. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 8, 2015, 1:39 PM EDT (17:39 UTC)
- Expired
- Jun 8, 2015, 8:00 PM EDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 35 counties
Albany County, NY, Broome County, NY, Chemung County, NY, Chenango County, NY, Columbia County, NY, Cortland County, NY, Delaware County, NY, Dutchess County, NY, Fulton County, NY, Greene County, NY, Hamilton County, NY, Herkimer County, NY, Madison County, NY, Montgomery County, NY, Oneida County, NY, Onondaga County, NY, Otsego County, NY, Rensselaer County, NY, Saratoga County, NY, Schenectady County, NY, Schoharie County, NY, Sullivan County, NY, Tioga County, NY, Tompkins County, NY, Ulster County, NY, Warren County, NY, Washington County, NY, Bradford County, PA, Lackawanna County, PA, Luzerne County, PA, Pike County, PA, Susquehanna County, PA, Wayne County, PA, Wyoming County, PA, Bennington County, VT
The radar
The Albany radar (KENX), 84 km from the middle of the area, began a volume at 17:41 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 SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 40%
- One or more EF2 to EF5 tornadoes
- 20%
- Ten or more severe wind reports
- 60%
- One or more gusts of 65 knots or more
- 10%
- Ten or more severe hail reports
- 40%
- One or more hailstones of 2 inches or more
- 30%
- Six or more combined severe hail and wind reports
- 70%
Warnings issued inside it
3 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 8, 1:49 PM EDT | Severe Thunderstorm Warning | BGM | Cayuga, Cortland, Madison, Oneida, Onondaga | 56 min |
| Jun 8, 2:54 PM EDT | Severe Thunderstorm Warning | BGM | Chemung, Steuben, Tioga | 51 min |
| Jun 8, 6:39 PM EDT | Flash Flood Warning | BGM | Lackawanna, Luzerne | 3 hr |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Albany, NY (KALY), launched 12:00Z, 5.7 hours before the alert went out and 95 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
- 1333 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 405 m²/s²
- 0-3 km storm-relative helicity
- 446 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
751
WWUS20 KWNS 081736
SEL4
SPC WW 081736
MAZ000-NYZ000-PAZ000-VTZ000-090000-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 274
NWS STORM PREDICTION CENTER NORMAN OK
140 PM EDT MON JUN 8 2015
THE NWS STORM PREDICTION CENTER HAS ISSUED A
* TORNADO WATCH FOR PORTIONS OF
WESTERN MASSACHUSETTS
CENTRAL AND EASTERN NEW YORK
NORTHEAST PENNSYLVANIA
SOUTHWEST VERMONT
* EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 140 PM UNTIL
800 PM EDT.
* PRIMARY THREATS INCLUDE...
A COUPLE TORNADOES POSSIBLE
SCATTERED DAMAGING WIND GUSTS TO 70 MPH LIKELY
SCATTERED LARGE HAIL AND ISOLATED VERY LARGE HAIL EVENTS TO 2
INCHES IN DIAMETER POSSIBLE
SUMMARY...A FAST-MOVING LINE OF THUNDERSTORMS WILL AFFECT PARTS OF
CENTRAL/EASTERN NY THIS AFTERNOON...WITH MORE ISOLATED CELLS
BUILDING NORTHEASTWARD OUT OF PA INTO WATCH AREA. STRONG LOW/MID
LEVEL WINDS WILL PROMOTE THE RISK OF LOCALLY DAMAGING WINDS IN THE
MORE INTENSE CELLS...ALONG WITH THE THREAT OF A TORNADO OR TWO.
THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 65 STATUTE
MILES EAST AND WEST OF A LINE FROM 55 MILES NORTH NORTHWEST OF
GLENS FALLS NEW YORK TO 40 MILES WEST SOUTHWEST OF MONTICELLO NEW
YORK. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED
WATCH OUTLINE UPDATE (WOUS64 KWNS WOU4).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH
AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR
THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS
AND POSSIBLE WARNINGS.
&&
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 26035.
...HARTSPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 8, 11:41 AM EDT | Mesoscale Discussion | SPC | Allegany, Cayuga, Chemung, Chenango, Cortland, Livingston and 12 more | 2 hr |
| Jun 8, 2:58 PM EDT | Mesoscale Discussion | SPC | Albany, Broome, Chemung, Chenango, Delaware, Fulton and 13 more | 92 min |
| Jun 8, 7:12 PM EDT | Mesoscale Discussion | SPC | Columbia, Delaware, Dutchess, Greene, Orange, Sullivan and 1 more | 93 min |
| Jun 8, 1:31 PM EDT | Mesoscale Discussion | SPC | Adams, Bedford, Berks, Blair, Cambria, Cameron and 31 more | 119 min |
| Jun 8, 2:34 PM EDT | Tornado Watch | SPC | Adams, Bedford, Blair, Centre, Clinton, Columbia and 19 more | 5 hr |
| Jun 8, 3:20 PM EDT | Mesoscale Discussion | SPC | Adams, Berks, Bucks, Carbon, Centre, Chester and 25 more | 85 min |
| Jun 8, 4:13 PM EDT | Tornado Watch | SPC | Berks, Bucks, Carbon, Chester, Lehigh, Monroe and 2 more | 4 hr |
| Jun 8, 4:46 PM EDT | Mesoscale Discussion | SPC | Adams, Berks, Chester, Cumberland, Dauphin, Franklin and 6 more | 59 min |
Nearby
Tornado Watches in New York, 2015Tornado Watches in Pennsylvania, 2015Tornado Watches in Vermont, 2015Every tornado watch in 2015
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.