WW 247 SEVERE TSTM MD OH VA WV CW 271710Z - 280100Z

URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 247
NWS Storm Prediction Center Norman OK
110 PM EDT Wed May 27 2026
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Southern Maryland
Southeast Ohio
Virginia
West Virginia
Coastal Waters
* Effective this Wednesday afternoon and evening from 110 PM
until 900 PM EDT.
* Primary threats include...
Scattered damaging wind gusts to 65 mph likely
Isolated large hail events to 1.5 inches in diameter possible
SUMMARY...Scattered to numerous thunderstorms are expected to pose a
threat for mainly damaging winds as this activity moves
east-southeastward through the afternoon and evening. Peak gusts may
reach up to 60-65 mph. Isolated hail may also occur with the
strongest cores.
The severe thunderstorm watch area is approximately along and 60
statute miles north and south of a line from 40 miles west northwest
of Charleston WV to 40 miles south southeast of Wallops VA. For a
complete depiction of the watch see the associated watch outline
update (WOUS64 KWNS WOU7).
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 55 knots. A
few cumulonimbi with maximum tops to 500. Mean storm motion vector
29030.
...Gleason
WW 0247 Status Updates

STATUS REPORT ON WW 247
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 35 N GSO TO
15 SSE ROA TO 15 N LYH TO 30 S CHO TO 30 W RIC TO 25 S RIC TO 40
ENE RZZ TO 35 E RZZ.
WW 247 WILL BE ALLOWED TO EXPIRE AT 280100Z.
..MEAD..05/28/26
ATTN...WFO...LWX...AKQ...RLX...RNK...
STATUS REPORT FOR WS 247
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
VAC007-011-019-025-029-031-037-049-053-081-083-089-111-117-135-
143-145-147-183-590-595-680-690-280100-
VA
. VIRGINIA COUNTIES INCLUDED ARE
AMELIA APPOMATTOX BEDFORD
BRUNSWICK BUCKINGHAM CAMPBELL
CHARLOTTE CUMBERLAND DINWIDDIE
GREENSVILLE HALIFAX HENRY
LUNENBURG MECKLENBURG NOTTOWAY
PITTSYLVANIA POWHATAN PRINCE EDWARD
SUSSEX
VIRGINIA INDEPENDENT CITIES INCLUDED ARE
DANVILLE EMPORIA LYNCHBURG
MARTINSVILLE
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
No Mesoscale Discussions are in effect as of Thu May 28 01:00:15 UTC 2026.SPC 0100Z Day 1 Outlook

Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0756 PM CDT Wed May 27 2026
Valid 280100Z - 281200Z
...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF
THE MID-ATLANTIC...
...SUMMARY...
Thunderstorms will severe wind gusts and hail will be possible this
evening from parts of the Mid-Atlantic into central Appalachians.
Isolated severe gusts and hail may also occur in central Wisconsin
and in parts of the Northwest.
...Mid-Atlantic/Central Appalachians...
An upper-level trough, evident on water vapor imagery, is moving
southeastward through the Great Lakes. At the surface, a cold front
is advancing southward across the Ohio Valley and central
Appalachians. To the south of the front, surface dewpoints are in
the upper 60s to lower 70s F. The RAP has MLCAPE in the 1000 to 1500
J/kg range from eastern Kentucky eastward into southern Virginia and
across much of North Carolina. Within this area, scattered
thunderstorms with an isolated severe threat are ongoing. Forecast
soundings in the Mid-Atlantic early this evening have moderate
deep-layer shear and steep low-level lapse rates. This suggests the
potential for severe wind gusts will continue for a couple more
hours with the more organized clusters.
...Central Wisconsin...
At the surface, a pocket of moisture and instability is located over
central Wisconsin early this evening, where the RAP has MLCAPE in
the 500 to 1500 J/kg range. Forecast soundings near the instability
max have 0-3 km lapse rates near 7.5 C/km and sufficient deep-layer
shear for a marginal severe threat. Isolated severe gusts and hail
will be possible for another hour or so.
...Northwest...
At mid-levels, a low is evident on water vapor imagery over central
California, and flow is from the southeast and east over much of the
northwestern U.S. Thunderstorms are ongoing ahead of a band of
strong large-scale ascent from far northern California into
south-central Oregon. The environment is characterized by moderate
deep-layer shear and steep lapse rates, suggesting a threat for
isolated severe wind gusts will continue. Additional storms are
ongoing near a pocket of moderate instability in northern Idaho and
western Montana, where a few severe wind gusts will also be
possible.
..Broyles.. 05/28/2026
SPC Day 3-8 Fire Weather Outlook

Day 3-8 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
0411 PM CDT Wed May 27 2026
Valid 291200Z - 041200Z
...Synopsis...
An upper-level low over the Great Basin will evolve into an open
wave Friday before accelerating northeastward towards the Northern
Plains over the weekend. A blocking ridge across the central U.S.
will persist while several mid-level short wave troughs traverse
across the Northeast through early next week. Fire weather concerns
will remain minimal through the middle of next week over much of the
CONUS, although warmer and drier conditions moving in behind the
exiting upper-low will promote drying of fuels across the Southwest.
...Day 3/Friday - Four Corners and Colorado Plateau...
A mid-level jet will move into the Four Corners region as an
upper-level trough over the Great Basin begins to translate
northeastward Day 3/Friday. Residual dry, southerly flow across the
Four Corners and Southwest is expected to bring a continued fire
weather threat to portions of the Four Corners and Colorado Plateau
where lower elevated fuels remain receptive. The 40% critical
probability area has been expanded southward into the Four Corners
where recent rainfall was minimal.
...Day 4-8/Saturday-Wednesday...
The exit of the upper trough and muted surface pressure gradients
will promote a warming and drying trend across the Southwest through
early next week. Ample rainfall and cooler temperatures across the
Southern Plains and Southeast will minimize fire weather concerns.
Persistent surface high pressure the Great Lakes should allow for
lighter winds and mainly dry conditions to limit fire weather
concerns through early next week, although this pattern will bolster
the drying of fuels over the region into the Upper Midwest. Longer
term model guidance suggests deeper moisture aided by the presence
of a diffuse upper low setting up near Baja California, returns to
portions of the Southwest by the middle of next week. With several
preceding days of warm and dry conditions, fuels could become more
receptive to lightning ignition from initially high-based
thunderstorms. Too much uncertainty remains for Day 8/Wednesday to
include dry thunderstorm probabilities at this time.
..Williams.. 05/27/2026
...Please see www.spc.noaa.gov/fire for graphic product...
|