RSS Mesoscale Discussions from Storm Prediction Center
WW 346 TORNADO WI 172235Z - 180200Z
URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 346
NWS Storm Prediction Center Norman OK
535 PM CDT Wed Jun 17 2026
The NWS Storm Prediction Center has issued a
* Tornado Watch for portions of
Southwest into Southern Wisconsin
* Effective this Wednesday afternoon and evening from 535 PM
until 900 PM CDT.
* Primary threats include...
A couple tornadoes possible
Scattered damaging wind gusts to 65 mph possible
Scattered large hail events to 1.5 inches in diameter possible
SUMMARY...A couple of severe thunderstorms will likely persist into
the evening across the Watch area immediately east of a surface low.
A couple of supercell tornadoes are possible in addition to a risk
for severe gusts and large hail.
The tornado watch area is approximately along and 35 statute miles
north and south of a line from 35 miles west of Lonerock WI to 20
miles south of Madison WI. For a complete depiction of the watch see
the associated watch outline update (WOUS64 KWNS WOU6).
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 341...WW 342...WW
343...WW 344...WW 345...
AVIATION...Tornadoes and 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 300. Mean
storm motion vector 30035.
...Smith
Read more
WW 345 TORNADO MO 172220Z - 180300Z
URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 345
NWS Storm Prediction Center Norman OK
520 PM CDT Wed Jun 17 2026
The NWS Storm Prediction Center has issued a
* Tornado Watch for portions of
West-Central into Central Missouri
* Effective this Wednesday afternoon and evening from 520 PM
until 1000 PM CDT.
* Primary threats include...
A couple tornadoes possible
Widespread damaging winds and isolated significant gusts to 75
mph likely
Scattered large hail and isolated very large hail events to 3
inches in diameter likely
SUMMARY...Several supercells will continue to intensify through the
late afternoon and persist into the evening across the Watch area.
A moist and unstable airmass with environmental wind shear favorable
for supercells is present over the area. The threat for a couple of
tornadoes, large to very large hail, and severe gusts is forecast.
The tornado watch area is approximately along and 50 statute miles
north and south of a line from 45 miles southwest of Knob Noster MO
to 75 miles east southeast of Knob Noster MO. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU5).
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 341...WW 342...WW
343...WW 344...
AVIATION...Tornadoes and a few severe thunderstorms with hail
surface and aloft to 3 inches. Extreme turbulence and surface wind
gusts to 65 knots. A few cumulonimbi with maximum tops to 550. Mean
storm motion vector 28035.
...Smith
Read more
WW 344 TORNADO IN 172135Z - 180500Z
URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 344
NWS Storm Prediction Center Norman OK
535 PM EDT Wed Jun 17 2026
The NWS Storm Prediction Center has issued a
* Tornado Watch for portions of
Southern into Central and North-Central Indiana
* Effective this Wednesday afternoon and Thursday morning from
535 PM until 100 AM EDT.
* Primary threats include...
A few tornadoes and a couple intense tornadoes likely
Widespread damaging winds and isolated significant gusts to 80
mph likely
Scattered large hail and isolated very large hail events to 2.5
inches in diameter likely
SUMMARY...Severe thunderstorms are forecast to move east into the
Watch this evening and continue into the early overnight.
Supercells capable of tornadoes, some of which will probably be
strong, large to very large hail, and severe gusts are expected with
this activity.
The tornado watch area is approximately along and 70 statute miles
north and south of a line from 25 miles northwest of Terre Haute IN
to 30 miles south southeast of Muncie IN. For a complete depiction
of the watch see the associated watch outline update (WOUS64 KWNS
WOU4).
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 341...WW 342...WW 343...
AVIATION...Tornadoes and a few severe thunderstorms with hail
surface and aloft to 2.5 inches. Extreme turbulence and surface wind
gusts to 70 knots. A few cumulonimbi with maximum tops to 500. Mean
storm motion vector 27040.
...Smith
Read more
WW 343 SEVERE TSTM KS MO 171935Z - 180300Z
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 343
NWS Storm Prediction Center Norman OK
235 PM CDT Wed Jun 17 2026
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Eastern Kansas
Western and Central Missouri
* Effective this Wednesday afternoon and evening from 235 PM
until 1000 PM CDT.
* Primary threats include...
Scattered damaging winds and isolated significant gusts to 75
mph likely
Scattered large hail and isolated very large hail events to 3
inches in diameter likely
A tornado or two possible
SUMMARY...Thunderstorms will rapidly develop this afternoon along a
cold front and sag southeastward across the watch area through the
evening. Severe/supercell storms capable of very large hail and
damaging winds are possible. A tornado or two may also occur.
The severe thunderstorm watch area is approximately along and 70
statute miles north and south of a line from 35 miles west northwest
of Chanute KS to 70 miles east northeast of Knob Noster MO. For a
complete depiction of the watch see the associated watch outline
update (WOUS64 KWNS WOU3).
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 341...WW 342...
AVIATION...A few severe thunderstorms with hail surface and aloft to
3 inches. Extreme turbulence and surface wind gusts to 65 knots. A
few cumulonimbi with maximum tops to 550. Mean storm motion vector
28035.
...Hart
Read more
WW 342 TORNADO IL MO 171915Z - 180300Z
URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 342
NWS Storm Prediction Center Norman OK
215 PM CDT Wed Jun 17 2026
The NWS Storm Prediction Center has issued a
* Tornado Watch for portions of
Central Illinois
Eastern Missouri
* Effective this Wednesday afternoon and evening from 215 PM
until 1000 PM CDT.
* Primary threats include...
Several tornadoes and a couple intense tornadoes likely
Scattered damaging winds and isolated significant gusts to 75
mph likely
Scattered large hail and isolated very large hail events to 3
inches in diameter likely
SUMMARY...Intense thunderstorms are expected to develop this
afternoon over eastern Missouri and western Illinois, tracking
across the watch through the evening. Supercells capable of
tornadoes, large hail, and damaging winds are all possible with
these storms.
The tornado watch area is approximately along and 75 statute miles
north and south of a line from 30 miles north northwest of Columbia
MO to 35 miles east northeast of Mattoon IL. 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 340...WW 341...
AVIATION...Tornadoes and a few severe thunderstorms with hail
surface and aloft to 3 inches. Extreme turbulence and surface wind
gusts to 65 knots. A few cumulonimbi with maximum tops to 500. Mean
storm motion vector 28035.
...Hart
Read more
WW 0346 Status Updates
STATUS REPORT ON WW 346
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 30 E DBQ TO
30 ENE MSN.
..DEAN..06/18/26
ATTN...WFO...ARX...MKX...
STATUS REPORT FOR WT 346
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
WIC045-055-105-127-180240-
WI
. WISCONSIN COUNTIES INCLUDED ARE
GREEN JEFFERSON ROCK
WALWORTH
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
Read more
WW 0345 Status Updates
STATUS REPORT ON WW 345
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 SE OJC TO
30 NNE SZL.
..DEAN..06/18/26
ATTN...WFO...EAX...SGF...
STATUS REPORT FOR WT 345
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
MOC013-015-029-039-059-085-105-125-131-141-161-167-169-185-
180240-
MO
. MISSOURI COUNTIES INCLUDED ARE
BATES BENTON CAMDEN
CEDAR DALLAS HICKORY
LACLEDE MARIES MILLER
MORGAN PHELPS POLK
PULASKI ST. CLAIR
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
Read more
WW 0344 Status Updates
STATUS REPORT ON WW 344
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 10 SSE CMI
TO 30 E MIE.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1171
..WEINMAN..06/18/26
ATTN...WFO...IND...IWX...
STATUS REPORT FOR WT 344
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
INC005-011-013-021-027-031-035-055-057-059-063-065-071-079-081-
083-093-095-097-101-105-107-109-119-121-133-135-139-145-153-165-
167-180140-
IN
. INDIANA COUNTIES INCLUDED ARE
BARTHOLOMEW BOONE BROWN
CLAY DAVIESS DECATUR
DELAWARE GREENE HAMILTON
HANCOCK HENDRICKS HENRY
JACKSON JENNINGS JOHNSON
KNOX LAWRENCE MADISON
MARION MARTIN MONROE
MONTGOMERY MORGAN OWEN
PARKE PUTNAM RANDOLPH
RUSH SHELBY SULLIVAN
VERMILLION VIGO
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
Read more
WW 0343 Status Updates
STATUS REPORT ON WW 343
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 40 ENE ICT
TO 25 ESE MKC TO 35 SE IRK.
..DEAN..06/18/26
ATTN...WFO...ICT...TOP...SGF...EAX...
STATUS REPORT FOR WS 343
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
KSC001-011-019-021-037-049-073-099-125-133-205-207-180240-
KS
. KANSAS COUNTIES INCLUDED ARE
ALLEN BOURBON CHAUTAUQUA
CHEROKEE CRAWFORD ELK
GREENWOOD LABETTE MONTGOMERY
NEOSHO WILSON WOODSON
MOC011-057-097-217-180240-
MO
. MISSOURI COUNTIES INCLUDED ARE
BARTON DADE JASPER
VERNON
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
Read more
WW 0342 Status Updates
STATUS REPORT ON WW 342
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 40 S IRK TO
15 E DNV.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1171
..WEINMAN..06/18/26
ATTN...WFO...LSX...ILX...LOT...DVN...
STATUS REPORT FOR WT 342
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
ILC005-013-019-021-023-025-027-029-033-035-041-045-049-051-061-
079-083-101-115-117-119-121-133-135-137-139-147-149-159-163-167-
171-173-183-189-180140-
IL
. ILLINOIS COUNTIES INCLUDED ARE
BOND CALHOUN CHAMPAIGN
CHRISTIAN CLARK CLAY
CLINTON COLES CRAWFORD
CUMBERLAND DOUGLAS EDGAR
EFFINGHAM FAYETTE GREENE
JASPER JERSEY LAWRENCE
MACON MACOUPIN MADISON
MARION MONROE MONTGOMERY
MORGAN MOULTRIE PIATT
PIKE RICHLAND ST. CLAIR
SANGAMON SCOTT SHELBY
VERMILION WASHINGTON
MOC007-019-027-051-071-073-099-113-135-137-139-151-163-173-183-
189-219-510-180140-
Read more
WW 0341 Status Updates
STATUS REPORT ON WW 341
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 45 NNE ALO
TO 15 W LSE TO 30 ESE EAU.
..LYONS..06/17/26
ATTN...WFO...ARX...MPX...
STATUS REPORT FOR WS 341
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
IAC005-191-172240-
IA
. IOWA COUNTIES INCLUDED ARE
ALLAMAKEE WINNESHIEK
MNC055-172240-
MN
. MINNESOTA COUNTIES INCLUDED ARE
HOUSTON
WIC023-063-123-172240-
WI
. WISCONSIN COUNTIES INCLUDED ARE
CRAWFORD LA CROSSE VERNON
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
Read more
MD 1173 CONCERNING SEVERE POTENTIAL...TORNADO WATCH LIKELY FOR SOUTHERN INDIANA...SOUTHWEST/CENTRAL OHIO...AND NORTHERN KENTUCKY
Mesoscale Discussion 1173
NWS Storm Prediction Center Norman OK
0827 PM CDT Wed Jun 17 2026
Areas affected...Southern Indiana...southwest/central Ohio...and
northern Kentucky
Concerning...Severe potential...Tornado Watch likely
Valid 180127Z - 180400Z
Probability of Watch Issuance...80 percent
SUMMARY...The severe risk will continue spreading/developing
eastward tonight. A few tornadoes, damaging winds, and severe hail
are all possible.
DISCUSSION...As a midlevel wave and accompanying strong midlevel jet
streak continue tracking eastward across the Midwest into the Great
Lakes, an attendant surface low will track eastward from WI into
Lower MI during the next several hours. In response, a 60-kt
southerly LLJ (sampled by the IND VWP) will continue translating
northeastward across eastern IN into central OH tonight. The wind
profile across this region is already robust, with a large
clockwise-curved hodograph sampled by the ILN 00Z sounding (300
m2/s2 effective SRH) -- and further increases in size/curvature can
be expected with the strengthening LLJ.
While buoyancy is marginal with eastward and northward extent,
recovering PBL air should continue spreading east-northeastward
tonight, supporting surface-based convection. As a result, the
potential for severe storms (including supercells) capable of
producing a few tornadoes, damaging winds, and severe hail will
continue eastward into the overnight hours. A downstream tornado
watch is likely.
..Weinman/Smith.. 06/18/2026
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...RLX...JKL...ILN...LMK...IND...PAH...
LAT...LON 38268360 38078483 37778727 37878781 38098799 38438772
38738626 39038559 39538493 39948421 40138359 40118304
39948261 39588247 38968261 38498300 38268360
MOST PROBABLE PEAK TORNADO INTENSITY...120-145 MPH
MOST PROBABLE PEAK WIND GUST...65-80 MPH
MOST PROBABLE PEAK HAIL SIZE...1.00-1.75 IN
Read more
MD 1172 CONCERNING SEVERE POTENTIAL...WATCH POSSIBLE FOR PARTS OF SOUTHERN LA/MS
Mesoscale Discussion 1172
NWS Storm Prediction Center Norman OK
0743 PM CDT Wed Jun 17 2026
Areas affected...Parts of southern LA/MS
Concerning...Severe potential...Watch possible
Valid 180043Z - 180315Z
Probability of Watch Issuance...40 percent
SUMMARY...A gradual increase in the tornado threat is expected into
late evening. Watch issuance is possible.
DISCUSSION...To the east of strongly sheared Tropical Storm Arthur,
low-level flow is gradually increasing across parts of southeast LA
and southern MS (as depicted in regional VWPs), and will continue to
increase into late evening. Some backing of low-level flow is also
expected as Arthur approaches the region, resulting in some
enlargement of low-level hodographs. Given the presence of rich
tropical moisture (with mid/upper 70s F dewpoints), this increase in
low-level shear/SRH could aid in the development of transient, small
supercells later this evening into the overnight, resulting in a
threat for brief tornadoes. Tornado Watch issuance is increasingly
possible later this evening in order to address this threat.
..Dean/Smith.. 06/18/2026
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...MOB...JAN...LIX...LCH...
LAT...LON 29779315 31209181 31338996 31238912 31008865 30658870
29558936 29079021 29039071 29069137 29219202 29779315
MOST PROBABLE PEAK TORNADO INTENSITY...85-110 MPH
MOST PROBABLE PEAK WIND GUST...UP TO 60 MPH
Read more
MD 1171 CONCERNING TORNADO WATCH 342...344... FOR PARTS OF SOUTH-CENTRAL ILLINOIS INTO SOUTHWEST INDIANA
Mesoscale Discussion 1171
NWS Storm Prediction Center Norman OK
0650 PM CDT Wed Jun 17 2026
Areas affected...Parts of south-central Illinois into southwest
Indiana
Concerning...Tornado Watch 342...344...
Valid 172350Z - 180145Z
The severe weather threat for Tornado Watch 342, 344 continues.
SUMMARY...Large hail, damaging winds, and the potential for a few
tornadoes will continue spreading east-southeastward this evening --
within Tornado Watches 342/344.
DISCUSSION...A couple supercells are tracking east-southeastward
along the southern flank of a larger convective cluster in
east-central/southeast IL -- with additional
development/intensification farther west in south-central IL.
Despite the presence of very strong low/deep-layer flow/shear
sampled by the IND VWP (60 kt low-level jet and 650-700 m2/s2 0-1 km
SRH), these storms are tracking through a corridor of convectively
processed air from earlier storms. However, the strong low-level
mass response accompanying an approaching midlevel wave may support
additional boundary-layer recovery toward the inflow of these storms
during the next few hours. If this can occur, the robust low-level
shear/streamwise vorticity will support a few tornadoes (some of
which could be strong-intense) with any longer-lived supercells.
Very large hail and severe wind gusts (75+ mph) will also be
possible with these storms as they continue east-southeastward.
..Weinman.. 06/17/2026
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...IND...ILX...LSX...
LAT...LON 39128678 38888686 38788721 38928769 39158879 39188973
39368996 39648986 39718954 39718833 39598770 39458719
39338688 39128678
MOST PROBABLE PEAK TORNADO INTENSITY...120-145 MPH
MOST PROBABLE PEAK WIND GUST...65-80 MPH
MOST PROBABLE PEAK HAIL SIZE...2.00-3.50 IN
Read more
SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0810 PM CDT Wed Jun 17 2026
Valid 180100Z - 181200Z
...THERE IS A MODERATE RISK OF SEVERE THUNDERSTORMS SOUTH-CENTRAL
PORTIONS OF ILLINOIS AND INDIANA...
...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ALONG THE NORTHERN
GULF COAST...
...SUMMARY...
A corridor of tornado, damaging hail and wind threat persists from
south-central Illinois into Indiana this evening. A broader zone of
severe hail and wind extends from southeast Kansas into western
Ohio.
...IL...IN...MO...OH...
The greatest tornado threat corridor extends from south-central IL
into parts of central/southwest IN this evening, where air mass
recovery continues out of the southwest. Supercells in this region
have been tornadic at times, also producing large damaging hail.
Given the extreme shear downstream, and continued low-level
theta-advection, the environment remains conditionally favorable for
a couple strong tornadoes through this evening over a small portion
of IL and IN. The threat may extend as far east as western/central
OH later tonight, with tornado potential depending on instability.
For more information see mesoscale discussion 1171.
...Northern Gulf Coast...
A moist and unstable environment exists across LA and into southern
MS/AL ahead of Arthur. Low-level shear may increase further this
evening, with periodic mini-supercell potential and tornado risk.
For more information see mesoscale discussion 1172.
..Jewell.. 06/18/2026
Read more
SPC Day 3-8 Fire Weather Outlook
Day 3-8 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
0452 PM CDT Wed Jun 17 2026
Valid 191200Z - 251200Z
...Synopsis...
On Day 3/Friday, an upper low will transition east of Atlantic
Canada as a secondary low atop central-Manitoba gradually follows
behind. This pattern should facilitate expansive troughing to
persist over the Northeast into early next week, sending a series of
cold fronts and multiple rounds of precipitation through the eastern
CONUS. An upper ridge will break down over the West on Day
2/Thursday, initiating several days of dry thunderstorm potential
across portions of the Sierra and upper Great Basin. In addition,
dry and breezy conditions with above normal temperatures (and
resultant dry fuels) will support expansive fire concerns through
Day 4/Saturday. The upper trough will lose its amplitude as it
traverses the Great Plains, transitioning the western CONUS to
somewhat zonal flow aloft. While predictability is low, extended
guidance exhibits increasing potential for ridging to build back
across the Intermountain West, bringing warm and dry conditions back
into the region early next week.
...Days 3-4/Friday-Saturday - Parts of the Pacific Northwest, Sierra
Nevada, and Great Basin...
As upper-level troughing moves onshore, surging mid-level moisture
and synoptic scale forcing will bring increased chances for
thunderstorms. Given preceding days of warm and dry conditions and
coincident curing fuels, the isolated nature of thunderstorm
development could pose a threat for lightning ignitions across a
very dry environment. Fast storm motions, high cloud bases, and
locally breezy conditions support 10% Dry Thunderstorm probabilities
on Day 3/Friday, and again on Day 4/Saturday as the trough shifts
eastward. Spatial extent of the aforementioned risk areas may
fluctuate as guidance is better resolved in future outlook cycles.
Increasing southerly to westerly flow across the Southwest will
transport very dry air and breezy conditions amid recently receptive
fuels, promoting continued fire concerns in the Great Basin through
the weekend. 40% Critical probabilities have been maintained on Days
3-4/Friday-Saturday to account for this threat.
..Elizalde-Garcia.. 06/17/2026
...Please see www.spc.noaa.gov/fire for graphic product...
Read more
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