Alert archive / New York / Tornado Watches in 2019
Tornado Watch 71
The Storm Prediction Center issued this tornado watch at Apr 14, 2019, 9:56 PM EDT for 16 counties in New York; 7 counties in Pennsylvania. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 14, 2019, 9:56 PM EDT (01:56 UTC)
- Expired
- Apr 15, 2019, 3:25 AM EDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 0.5 in
- Strongest gust expected
- 60 kt
All 23 counties
Broome County, NY, Cayuga County, NY, Chemung County, NY, Chenango County, NY, Cortland County, NY, Delaware County, NY, Madison County, NY, Onondaga County, NY, Otsego County, NY, Schuyler County, NY, Seneca County, NY, Steuben County, NY, Sullivan County, NY, Tioga County, NY, Tompkins County, NY, Yates County, NY, Bradford County, PA, Lackawanna County, PA, Luzerne County, PA, Pike County, PA, Susquehanna County, PA, Wayne County, PA, Wyoming County, PA
The radar
The Binghamton radar (KBGM), 41 km from the middle of the area, began a volume at 01:59 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
- 30%
- One or more EF2 to EF5 tornadoes
- 10%
- Ten or more severe wind reports
- 50%
- One or more gusts of 65 knots or more
- 20%
- Ten or more severe hail reports
- 5%
- One or more hailstones of 2 inches or more
- 5%
- Six or more combined severe hail and wind reports
- 70%
Warnings issued inside it
11 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 14, 10:00 PM EDT | Severe Thunderstorm Warning | BGM | Steuben | 60 min |
| Apr 14, 10:45 PM EDT | Severe Thunderstorm Warning | BGM | Schuyler, Seneca, Steuben, Yates | 60 min |
| Apr 14, 11:12 PM EDT | Severe Thunderstorm Warning | BGM | Chemung, Steuben | 63 min |
| Apr 15, 12:16 AM EDT | Severe Thunderstorm Warning | BGM | Broome, Chemung, Tioga | 59 min |
| Apr 15, 1:03 AM EDT | Severe Thunderstorm Warning | BGM | Lackawanna, Luzerne, Wyoming | 57 min |
| Apr 15, 1:05 AM EDT | Tornado Warning | BGM | Bradford, Susquehanna | 25 min |
| Apr 15, 1:10 AM EDT | Severe Thunderstorm Warning | BGM | Broome, Chenango, Delaware, Otsego, Tioga | 65 min |
| Apr 15, 1:35 AM EDT | Tornado Warning | BGM | Broome, Chenango, Delaware | 25 min |
| Apr 15, 1:48 AM EDT | Severe Thunderstorm Warning | BGM | Lackawanna, Luzerne, Pike, Wayne, Wyoming | 57 min |
| Apr 15, 1:59 AM EDT | Severe Thunderstorm Warning | BGM | Broome, Chenango, Delaware, Otsego, Sullivan | 61 min |
| Apr 15, 2:05 AM EDT | Tornado Warning | BGM | Delaware, Sullivan | 25 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Buffalo Intl Airport, NY (KBUF), launched 00:00Z, 1.9 hours before the alert went out and 198 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
- 605 m above ground
- 0-6 km bulk shear
- 103 kt
- 0-1 km storm-relative helicity
- 586 m²/s²
- 0-3 km storm-relative helicity
- 582 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
The text
As transmitted.
694 WWUS20 KWNS 150154 SEL1 SPC WW 150154 NYZ000-PAZ000-150900- URGENT - IMMEDIATE BROADCAST REQUESTED Tornado Watch Number 71 NWS Storm Prediction Center Norman OK 955 PM EDT Sun Apr 14 2019 The NWS Storm Prediction Center has issued a * Tornado Watch for portions of South-central/Southeast New York Northeast Pennsylvania * Effective this Sunday night and Monday morning from 955 PM until 500 AM EDT. * Primary threats include... A couple tornadoes possible Scattered damaging wind gusts to 70 mph possible SUMMARY...Multiple rounds of fast-moving storms will spread northeastward across the region through the overnight. Damaging winds will be the most common hazard, but a tornado or two could occur with line-embedded circulations. The tornado watch area is approximately along and 45 statute miles north and south of a line from 40 miles northwest of Elmira NY to 10 miles north of Monticello NY. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU1). 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. && OTHER WATCH INFORMATION...CONTINUE...WW 66...WW 67...WW 69...WW 70... AVIATION...Tornadoes and a few severe thunderstorms with hail surface and aloft to 0.5 inches. Extreme turbulence and surface wind gusts to 60 knots. A few cumulonimbi with maximum tops to 450. Mean storm motion vector 21040. ...Guyer
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 14, 9:14 PM EDT | Mesoscale Discussion | SPC | Allegany, Cattaraugus, Chemung, Schuyler, Steuben, Wyoming | 61 min |
| Apr 14, 11:56 PM EDT | Mesoscale Discussion | SPC | Albany, Bronx, Broome, Chemung, Chenango, Columbia and 26 more | 2 hr |
| Apr 15, 12:33 AM EDT | Mesoscale Discussion | SPC | Essex, Fulton, Hamilton, Herkimer, Jefferson, Lewis and 8 more | 117 min |
| Apr 15, 1:05 AM EDT | Tornado Watch | SPC | Bronx, Columbia, Dutchess, Greene, Kings, Nassau and 8 more | 5 hr |
| Apr 15, 3:50 AM EDT | Mesoscale Discussion | SPC | Albany, Bronx, Columbia, Dutchess, Greene, Kings and 9 more | 55 min |
| Apr 15, 12:44 AM EDT | Mesoscale Discussion | SPC | Montour, Northumberland, Snyder, Union | 61 min |
Nearby
Tornado Watches in New York, 2019Tornado Watches in Pennsylvania, 2019Every tornado watch in 2019
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.