Tornado Watch 461

Issued

Aug 22, 2017, 12:23 PM EDT (16:23 UTC)

Expired

Aug 22, 2017, 9:00 PM EDT

In force

9 hr

Issued by

the Storm Prediction Center

Largest hail expected

1.5 in

Strongest gust expected

60 kt

The Ft Drum radar (KTYX), 41 km from the middle of the area, began a volume at 16:26 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.

Two or more tornadoes

40%

One or more EF2 to EF5 tornadoes

20%

Ten or more severe wind reports

80%

One or more gusts of 65 knots or more

20%

Ten or more severe hail reports

10%

One or more hailstones of 2 inches or more

5%

Six or more combined severe hail and wind reports

90%

• Mesoscale Discussion 1548Aug 22, 11:55 AM EDT
• Mesoscale Discussion 1550Aug 22, 2:44 PM EDT
• Mesoscale Discussion 1549Aug 22, 2:44 PM EDT
• Mesoscale Discussion 1554Aug 22, 4:39 PM EDT
• Mesoscale Discussion 1555Aug 22, 4:48 PM EDT
• Mesoscale Discussion 1556Aug 22, 5:49 PM EDT
• Mesoscale Discussion 1557Aug 22, 7:07 PM EDT
• Mesoscale Discussion 1558Aug 22, 8:04 PM EDT

929 
WWUS20 KWNS 221619
SEL1  
SPC WW 221619
NYZ000-PAZ000-VTZ000-LEZ000-LOZ000-230100-

URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 461
NWS Storm Prediction Center Norman OK
1220 PM EDT Tue Aug 22 2017

The NWS Storm Prediction Center has issued a

* Tornado Watch for portions of 
  New York
  Northern Pennsylvania
  Western Vermont
  Lake Erie
  Lake Ontario

* Effective this Tuesday afternoon and evening from 1220 PM until
  900 PM EDT.

* Primary threats include...
  A couple tornadoes possible
  Widespread damaging wind gusts to 70 mph likely

SUMMARY...Numerous storm clusters and lines are expected to develop
this afternoon and progress east-northeast. Strong gusts producing
damaging winds and a couple tornadoes are anticipated.

The tornado watch area is approximately along and 115 statute miles
east and west of a line from 40 miles north northeast of Saranac
Lake NY to 25 miles southeast of Bradford PA. 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.

&&

AVIATION...Tornadoes and a few severe thunderstorms with hail
surface and aloft to 1.5 inches. Extreme turbulence and surface wind
gusts to 60 knots. A few cumulonimbi with maximum tops to 500. Mean
storm motion vector 25030.

...Grams

Tornado Watches in New York, 2017Tornado Watches in Pennsylvania, 2017Tornado Watches in Vermont, 2017Every tornado watch in 2017

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.