Severe Thunderstorm Watch 39

Issued

Feb 25, 2017, 1:30 PM EST (18:30 UTC)

Expired

Feb 25, 2017, 7:00 PM EST

In force

6 hr

Issued by

the Storm Prediction Center

Largest hail expected

1.5 in

Strongest gust expected

60 kt

The Sterling radar (KLWX), 36 km from the middle of the area, began a volume at 18:32 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

10%

One or more EF2 to EF5 tornadoes

2%

Ten or more severe wind reports

50%

One or more gusts of 65 knots or more

10%

Ten or more severe hail reports

30%

One or more hailstones of 2 inches or more

10%

Six or more combined severe hail and wind reports

70%

• Mesoscale Discussion 210Feb 25, 12:16 PM EST
• Mesoscale Discussion 211Feb 25, 12:24 PM EST
• Mesoscale Discussion 212Feb 25, 4:26 PM EST
• Mesoscale Discussion 213Feb 25, 4:44 PM EST

732 
WWUS20 KWNS 251827
SEL9  
SPC WW 251827
DCZ000-DEZ000-MDZ000-NJZ000-PAZ000-VAZ000-WVZ000-CWZ000-260100-

URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 39
NWS Storm Prediction Center Norman OK
130 PM EST Sat Feb 25 2017

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of 
  District Of Columbia
  Delaware
  Maryland
  Southern New Jersey
  Southeast Pennsylvania
  Central and Eastern Virginia
  Eastern Panhandle of West Virginia
  Coastal Waters

* Effective this Saturday afternoon and evening from 130 PM until
  800 PM EST.

* Primary threats include...
  Scattered damaging wind gusts to 70 mph possible
  Isolated large hail events to 1.5 inches in diameter possible

SUMMARY...Thunderstorms are intensifying along a cold front over
central VA.  These storms will track across the watch area this
afternoon, posing a threat of locally damaging winds and hail.

The severe thunderstorm watch area is approximately along and 60
statute miles east and west of a line from 50 miles northwest of
Wilmington DE to 10 miles south of South Hill VA. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU9).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMEMBER...A Severe Thunderstorm Watch means conditions are
favorable for 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. Severe thunderstorms can and occasionally do produce
tornadoes.

&&

AVIATION...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 450. Mean storm motion vector
24035.

...Hart

Severe Thunderstorm Watches in Virginia, 2017Severe Thunderstorm Watches in Maryland, 2017Severe Thunderstorm Watches in Pennsylvania, 2017Every severe thunderstorm 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.