RSS Mesoscale Discussions from Storm Prediction Center
WW 352 TORNADO MA NY VT 181400Z - 181900Z
URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 352
NWS Storm Prediction Center Norman OK
1000 AM EDT Thu Jun 18 2026
The NWS Storm Prediction Center has issued a
* Tornado Watch for portions of
Western Massachusetts
Central and Eastern New York
Vermont
* Effective this Thursday morning and afternoon from 1000 AM
until 300 PM EDT.
* Primary threats include...
A couple tornadoes possible
Scattered damaging winds likely with isolated significant gusts
to 80 mph possible
SUMMARY...A line of fast-moving thunderstorms will sweep eastward
across the watch area through the early afternoon, posing a risk of
damaging winds and a few tornadoes.
The tornado watch area is approximately along and 60 statute miles
north and south of a line from 35 miles northwest of Elmira NY to 25
miles east of Montpelier VT. For a complete depiction of the watch
see the associated watch outline update (WOUS64 KWNS WOU2).
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 349...WW 350...WW 351...
AVIATION...Tornadoes and a few severe thunderstorms with hail
surface and aloft to 0.5 inches. Extreme turbulence and surface wind
gusts to 70 knots. A few cumulonimbi with maximum tops to 400. Mean
storm motion vector 26040.
...Hart
Read more
WW 351 TORNADO AL FL LA MS CW 181255Z - 182200Z
URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 351
NWS Storm Prediction Center Norman OK
755 AM CDT Thu Jun 18 2026
The NWS Storm Prediction Center has issued a
* Tornado Watch for portions of
Southern Alabama
Western Florida Panhandle
Southeast Louisiana
Southeast Mississippi
Coastal Waters
* Effective this Thursday morning and afternoon from 755 AM until
500 PM CDT.
* Primary threats include...
Several tornadoes likely
Isolated damaging wind gusts to 70 mph possible
SUMMARY...A very strong low-level wind field will transition
northeastward across the region today and interact with a moist
environment, supporting the potential for supercells capable of
tornadoes.
The tornado watch area is approximately along and 75 statute miles
north and south of a line from 15 miles north northwest of Slidell
LA to 40 miles east northeast of Evergreen AL. 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 349...WW 350...
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 500. Mean
storm motion vector 22025.
...Guyer
Read more
WW 350 SEVERE TSTM VA WV 181110Z - 181600Z
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 350
NWS Storm Prediction Center Norman OK
710 AM EDT Thu Jun 18 2026
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Western Virginia
Eastern West Virginia
* Effective this Thursday morning from 710 AM until NOON EDT.
* Primary threats include...
Scattered damaging wind gusts to 70 mph possible
Isolated large hail events to 1 inch in diameter possible
A tornado or two possible
SUMMARY...A fast-moving organized linear system with a history of
wind damage/some tornadoes overnight will continue
east-southeastward this morning. Wind damage will remain possible if
not likely, even if the linear system begins to weaken across the
mountains.
The severe thunderstorm watch area is approximately along and 75
statute miles north and south of a line from 35 miles west of White
Sulphur Springs WV to 35 miles northeast of Lynchburg VA. For a
complete depiction of the watch see the associated watch outline
update (WOUS64 KWNS WOU0).
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.
&&
OTHER WATCH INFORMATION...CONTINUE...WW 349...
AVIATION...A few severe thunderstorms with hail surface and aloft to
1 inch. Extreme turbulence and surface wind gusts to 60 knots. A few
cumulonimbi with maximum tops to 550. Mean storm motion vector
30035.
...Guyer
Read more
WW 349 TORNADO IN KY OH WV 180835Z - 181500Z
URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 349
NWS Storm Prediction Center Norman OK
335 AM CDT Thu Jun 18 2026
The NWS Storm Prediction Center has issued a
* Tornado Watch for portions of
Southern Indiana
Northern and Eastern Kentucky
Southern Ohio
West Virginia
* Effective this Thursday morning from 335 AM until 1000 AM CDT.
* Primary threats include...
A few tornadoes and a couple intense tornadoes possible
Widespread damaging wind gusts to 70 mph likely
Isolated large hail events to 1 inch in diameter possible
SUMMARY...Well-organized/fast-moving storms including an intense
linear bowing system and some embedded supercells will continue
east-southeastward through the early morning hours, with continued
damaging wind and tornado potential within a strongly sheared
environment.
The tornado watch area is approximately along and 45 statute miles
north and south of a line from 25 miles west of Louisville KY to 45
miles north northeast of Beckley WV. For a complete depiction of the
watch see the associated watch outline update (WOUS64 KWNS WOU9).
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 347...WW 348...
AVIATION...Tornadoes and a few severe thunderstorms with hail
surface and aloft to 1 inch. Extreme turbulence and surface wind
gusts to 60 knots. A few cumulonimbi with maximum tops to 550. Mean
storm motion vector 29040.
...Guyer
Read more
WW 0352 Status Updates
STATUS FOR WATCH 0352 HAS NOT BEEN ISSUED YET
Read more
WW 0351 Status Updates
STATUS FOR WATCH 0351 HAS NOT BEEN ISSUED YET
Read more
WW 0350 Status Updates
STATUS REPORT ON WW 350
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 20 NW BLF TO
20 S SSU TO 20 N CHO.
..THORNTON..06/18/26
ATTN...WFO...LWX...RNK...RLX...
STATUS REPORT FOR WS 350
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
VAC003-009-011-019-021-023-027-029-031-035-037-045-051-063-067-
071-077-079-083-089-121-125-141-143-155-161-163-173-185-197-530-
540-590-640-678-680-690-750-770-775-181440-
VA
. VIRGINIA COUNTIES INCLUDED ARE
ALBEMARLE AMHERST APPOMATTOX
BEDFORD BLAND BOTETOURT
BUCHANAN BUCKINGHAM CAMPBELL
CARROLL CHARLOTTE CRAIG
DICKENSON FLOYD FRANKLIN
GILES GRAYSON GREENE
HALIFAX HENRY MONTGOMERY
NELSON PATRICK PITTSYLVANIA
PULASKI ROANOKE ROCKBRIDGE
SMYTH TAZEWELL WYTHE
VIRGINIA INDEPENDENT CITIES INCLUDED ARE
BUENA VISTA CHARLOTTESVILLE DANVILLE
GALAX LEXINGTON LYNCHBURG
Read more
WW 0349 Status Updates
STATUS REPORT ON WW 349
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 45 NE OWB TO
35 ENE LEX TO 30 WSW HTS TO 5 N HTS TO 5 S UNI.
..BROYLES..06/18/26
ATTN...WFO...LMK...JKL...RLX...ILN...
STATUS REPORT FOR WT 349
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
INC061-123-181240-
IN
. INDIANA COUNTIES INCLUDED ARE
HARRISON PERRY
KYC005-011-017-019-025-029-049-063-065-067-071-073-079-111-113-
115-119-127-129-151-153-159-163-165-167-173-175-189-195-197-205-
209-215-237-239-181240-
KY
. KENTUCKY COUNTIES INCLUDED ARE
ANDERSON BATH BOURBON
BOYD BREATHITT BULLITT
CLARK ELLIOTT ESTILL
FAYETTE FLOYD FRANKLIN
GARRARD JEFFERSON JESSAMINE
JOHNSON KNOTT LAWRENCE
LEE MADISON MAGOFFIN
MARTIN MEADE MENIFEE
MERCER MONTGOMERY MORGAN
OWSLEY PIKE POWELL
Read more
MD 1182 CONCERNING TORNADO WATCH 351... FOR PORTIONS OF THE CENTRAL GULF COAST
Mesoscale Discussion 1182
NWS Storm Prediction Center Norman OK
0903 AM CDT Thu Jun 18 2026
Areas affected...portions of the central Gulf Coast
Concerning...Tornado Watch 351...
Valid 181403Z - 181530Z
The severe weather threat for Tornado Watch 351 continues.
SUMMARY...The potential for tornadoes and damaging wind gusts
continues across Tornado Watch 351. This risk is expected to spread
inland and eastward through the morning.
DISCUSSION...Regional radar imagery depicts several supercells
embedded within a broader precipitation shield downstream of the
remnants of Tropical Storm Arthur, currently analyzed over northern
Louisiana. This activity has produced several reports of
wind/potential tornado damage over southeastern Louisiana and
southern Mississippi over the past several hours, with low-level
Vrot signatures ranging form 30-40 kts at times. Expectation is for
this activity to persist through the morning while spreading
inland/eastward along a thermal/instability gradient (low-80s F
temperatures and rich tropical moisture contributing to greater
MLCAPE of 500-1500+ J/kg analyzed along the coast). Strong low-level
flow and SRH (45-50 kts at 2 km AGL and 200 m2/s2 0-500 m SRH,
respectively, sampled by the HDC/MOB VWPs) and looping hodographs
will continue to favor the development/maintenance of low-level
mesocyclones with the potential for tornadoes and damaging wind
gusts.
..Chalmers.. 06/18/2026
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...BMX...MOB...JAN...LIX...
LAT...LON 30258909 30308960 30388979 30658995 30828995 31108979
31718913 32038869 32208841 32298820 32298791 32208766
32018738 31738715 31558716 31238729 30848773 30688805
30458848 30288898 30258909
MOST PROBABLE PEAK TORNADO INTENSITY...85-110 MPH
MOST PROBABLE PEAK WIND GUST...UP TO 60 MPH
Read more
MD 1181 CONCERNING SEVERE POTENTIAL...WATCH LIKELY FOR PORTIONS OF THE NORTHEAST
Mesoscale Discussion 1181
NWS Storm Prediction Center Norman OK
0831 AM CDT Thu Jun 18 2026
Areas affected...portions of the Northeast
Concerning...Severe potential...Watch likely
Valid 181331Z - 181530Z
Probability of Watch Issuance...80 percent
SUMMARY...Thunderstorms to shift eastward with potential for
damaging wind and perhaps a tornado.
DISCUSSION...Low topped convection will continue eastward this
morning across portions of the Northeast. Strong southerly flow is
ushering in higher dew points ahead of this line. Though cloud cover
is prominent, further destabilization is expected to occur through
filtered heating into the early afternoon with MLCAPE around 1000
J/kg progged by the afternoon. Given the strong mid-level flow and
low-level jet, damaging wind potential will likely increase into the
afternoon. Given strong low-level shear profiles, a couple of
tornadoes are also possible. A watch will be needed soon to cover
this potential.
..Thornton/Hart.. 06/18/2026
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...GYX...BOX...BTV...OKX...ALY...BGM...BUF...CTP...
PBZ...
LAT...LON 43017777 41647945 41407616 41587391 42387246 44077204
44817237 44887508 43017777
MOST PROBABLE PEAK TORNADO INTENSITY...85-110 MPH
MOST PROBABLE PEAK WIND GUST...55-70 MPH
Read more
SPC 1300Z Day 1 Outlook
Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0801 AM CDT Thu Jun 18 2026
Valid 181300Z - 191200Z
...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS THE GULF
COAST AND CENTRAL APPALACHIANS TO MID-ATLANTIC/NORTHEAST...
...SUMMARY...
Isolated to scattered severe thunderstorms are expected from
Kentucky and the central Appalachians to the Mid-Atlantic, with
primarily damaging wind gusts or marginal hail. Scattered severe
storms are possible from upstate New York into New England, with
damaging wind gusts and tornado potential. A few tornadoes may also
occur over parts of the middle Gulf Coast states, and scattered
storms may produce gusty winds or marginal hail from Oklahoma into
western North Texas.
...Central Appalachians to Mid-Atlantic/North Carolina...
The region will be influenced by lingering long-lived
overnight-upscale-transitioning linear segments that moved across
Kentucky/West Virginia, that will likely continue to pose a severe
risk early today, mainly in the form of damaging winds. This may be
even as updraft/storm intensities somewhat trend downward over the
mountains. Even if weakening occurs early today east of the
Appalachians spine, residual outflow/differential heating and
potential MCV influences should help focus
redevelopment/re-intensification into the Piedmont later today, with
additional development westward toward the Cumberland Plateau along
the residual convective boundary as well as the
east/southeastward-advancing front. Moderate diurnal destabilization
aside, organized severe potential will be aided by seasonally strong
winds through the low/mid-troposphere, even with a tendency for
low-level winds to weaken into this afternoon.
...Northeast States...
Within a broader area of cyclonic flow aloft, a leading shortwave
trough will move from the Lower Great Lakes into the Northeast, with
a 90 kt mid-level speed max and cooling aloft moving across New York
and parts of New England during the day. Low pressure will develop
into southern Quebec, with a cold front extending southward into the
region.
Surface heating and gusty south winds will bring 60s F dewpoints
into the area with up to 1000 J/kg MUCAPE expected. Relatively warm
profiles will develop near 300 mb, somewhat limiting storm depth.
However, ample mid-level cooling will still support sufficient
destabilization and the development of intensifying low-topped
storms into the afternoon. Pronounced deep-layer/low-level shear and
backed surface winds ahead of the cold front will favor low-topped
supercells. Cells should develop/further increase over northern New
York through midday/early afternoon and will move quickly east.
Damaging winds, a couple of tornadoes, and hail will all be
possible, although smaller hail may be more likely given the low EL
heights.
...Gulf Coast including parts of LA/MS/AL/GA/FL...
Already strong mid/low-level winds across southeast Louisiana and
southern Mississippi, associated with the remnants of Arthur, will
further increase and spread east-northeastward across Alabama and
Florida Panhandle toward Georgia, as a weak surface low and
mid-level wave spread northeast regionally. The strong low-level
shear and mid 70s F dewpoints will support organized bands of storms
with embedded stronger/rotating cells capable of a
northeastward-transitioning tornado risk today.
...Oklahoma/southern Kansas to western North Texas...
Isolated mostly elevated severe storms capable of hail will remain
possible early today across southeast Kansas and northern Oklahoma
and possibly southwest Missouri. These storms could linger today and
also pose some damaging wind risk. Additional deep convection may
develop into late afternoon/early evening within a very unstable
environment across western Oklahoma into western North Texas near
the southward-shifting front and surface low/dryline across Texas,
with isolated large hail and damaging winds possible.
..Guyer/Broyles.. 06/18/2026
Read more
|
