Tornado Warning 16, NWS Pittsburgh, PA

956 
WWUS51 KPBZ 172111
SVSPBZ

Severe Weather Statement
National Weather Service Pittsburgh PA
511 PM EDT Fri May 17 2024

PAC003-172121-
/O.CAN.KPBZ.TO.W.0016.000000T0000Z-240517T2145Z/
Allegheny PA-
511 PM EDT Fri May 17 2024

...THE TORNADO WARNING FOR SOUTHEASTERN ALLEGHENY COUNTY IS
CANCELLED...

The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning has been cancelled.

&&

LAT...LON 4037 7953 4038 7973 4040 7974 4040 7973
      4041 7973 4042 7971 4043 7970 4044 7970
      4050 7958
TIME...MOT...LOC 2111Z 253DEG 18KT 4040 7972 

$$

PAC129-172145-
/O.CON.KPBZ.TO.W.0016.000000T0000Z-240517T2145Z/
Westmoreland PA-
511 PM EDT Fri May 17 2024

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 545 PM EDT FOR WEST
CENTRAL WESTMORELAND COUNTY...

At 511 PM EDT, a severe thunderstorm capable of producing a tornado
was located over Trafford, or over Monroeville, moving east at 20
mph.

HAZARD...Tornado.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

This dangerous storm will be near...
  Murrysville around 515 PM EDT.
  Delmont around 520 PM EDT.

Other locations impacted by this tornadic thunderstorm include
Export.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

Please report severe weather by calling 412-262-1988, posting to 
the NWS Pittsburgh Facebook page, or using Twitter @NWSPITTSBURGH. 

&&

LAT...LON 4037 7953 4038 7973 4040 7974 4040 7973
      4041 7973 4042 7971 4043 7970 4044 7970
      4050 7958
TIME...MOT...LOC 2111Z 253DEG 18KT 4040 7972 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN

$$

Rackley

909 
WWUS51 KPBZ 172115
SVSPBZ

Severe Weather Statement
National Weather Service Pittsburgh PA
515 PM EDT Fri May 17 2024

PAC129-172145-
/O.CON.KPBZ.TO.W.0016.000000T0000Z-240517T2145Z/
Westmoreland PA-
515 PM EDT Fri May 17 2024

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 545 PM EDT FOR CENTRAL
WESTMORELAND COUNTY...

At 515 PM EDT, a severe thunderstorm capable of producing a tornado
was located over Murrysville, or near Monroeville, moving east at 30
mph.

HAZARD...Tornado.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

This dangerous storm will be near...
  Murrysville and Delmont around 520 PM EDT.

Other locations impacted by this tornadic thunderstorm include
Export.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

Please report severe weather by calling 412-262-1988, posting to 
the NWS Pittsburgh Facebook page, or using Twitter @NWSPITTSBURGH. 

&&

LAT...LON 4039 7954 4040 7969 4043 7970 4049 7958
TIME...MOT...LOC 2115Z 249DEG 24KT 4042 7967 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN

$$

Rackley

565 
WWUS51 KPBZ 172121
SVSPBZ

Severe Weather Statement
National Weather Service Pittsburgh PA
521 PM EDT Fri May 17 2024

PAC129-172145-
/O.CON.KPBZ.TO.W.0016.000000T0000Z-240517T2145Z/
Westmoreland PA-
521 PM EDT Fri May 17 2024

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 545 PM EDT FOR CENTRAL
WESTMORELAND COUNTY...

At 521 PM EDT, a severe thunderstorm capable of producing a tornado
was located over Murrysville, or 7 miles east of Monroeville, moving
east at 30 mph.

HAZARD...Tornado.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

This dangerous storm will be near...
  Murrysville and Delmont around 525 PM EDT.

Other locations impacted by this tornadic thunderstorm include
Export.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

Please report severe weather by calling 412-262-1988, posting to 
the NWS Pittsburgh Facebook page, or using Twitter @NWSPITTSBURGH. 

&&

LAT...LON 4040 7955 4041 7965 4044 7966 4048 7958
TIME...MOT...LOC 2121Z 249DEG 24KT 4043 7963 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN

$$

Rackley

920 
WWUS51 KPBZ 172127
SVSPBZ

Severe Weather Statement
National Weather Service Pittsburgh PA
527 PM EDT Fri May 17 2024

PAC129-172145-
/O.CON.KPBZ.TO.W.0016.000000T0000Z-240517T2145Z/
Westmoreland PA-
527 PM EDT Fri May 17 2024

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 545 PM EDT FOR
NORTHWESTERN WESTMORELAND COUNTY...

At 526 PM EDT, a severe thunderstorm capable of producing a tornado
was located over Delmont, or 8 miles north of Jeannette, moving east
at 30 mph.

HAZARD...Tornado.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

This dangerous storm will be near...
  Delmont around 530 PM EDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

Please report severe weather by calling 412-262-1988, posting to 
the NWS Pittsburgh Facebook page, or using Twitter @NWSPITTSBURGH. 

&&

LAT...LON 4042 7956 4042 7961 4046 7963 4048 7958
TIME...MOT...LOC 2126Z 251DEG 24KT 4044 7958 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...0.00 IN

$$

Rackley

075 
WWUS51 KPBZ 172135 RRA
SVSPBZ

Severe Weather Statement
National Weather Service Pittsburgh PA
535 PM EDT Fri May 17 2024

PAC129-172145-
/O.EXP.KPBZ.TO.W.0016.000000T0000Z-240517T2145Z/
Westmoreland PA-
535 PM EDT Fri May 17 2024

...THE TORNADO WARNING FOR NORTHWESTERN WESTMORELAND COUNTY WILL
EXPIRE AT 545 PM EDT...

The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.

Remember, a Tornado Warning still remains in effect for northern 
Westmoreland County.

&&

LAT...LON 4042 7956 4042 7961 4046 7963 4048 7958
TIME...MOT...LOC 2135Z 251DEG 24KT 4046 7951 

$$

Rackley

Area Forecast Discussion
National Weather Service Pittsburgh PA
345 PM EDT Fri May 17 2024

.SYNOPSIS...
Unsettled weather continues through Saturday with periodic
showers and a few thunderstorms. Near to above normal
temperatures will continue. Dry weather returns by Sunday
afternoon, and continues into early next week with a warmup.

&&

.NEAR TERM /THROUGH TONIGHT/...
KEY MESSAGES:

- Showers and a few thunderstorms will continue into the evening
  as a trough passes.
- Localized heavy rainfall totals and water issues are possible,
  and rotating cells will need to be monitored.
  _____________________________________________________________

Steady rain coverage has waned somewhat as the pattern has taken
on more of a convective look. A couple of low-topped supercells
have managed to form, taking advantage of modest but sufficient
levels of 0-3km CAPE and shear from a low-level boundary,
creating a few funnel cloud reports.

Showers, and a thunderstorm or two, will remain possible this
evening as a shortwave trough axis crosses. Any further severe
potential looks limited to these low-topped, short-term
rotations that could drop a very brief tornado. The storms are
too short to produce large hail, and there is not much potential
for straight-line wind from these storms either. We also need to
continue to monitor the heavy rain/isolated flash flooding
potential, although the more scattered nature of the storms will
help to mitigate this to some degrees.

&&

.SHORT TERM /SATURDAY THROUGH SUNDAY NIGHT/...
KEY MESSAGES:

- Shower chances continue along with above normal temperatures.
  _______________________________________________

The upper trough will continue to slowly sag to the east Saturday
afternoon and evening. Forcing overall becomes more diffuse, and
thus more scattered activity is foreseen.  Activity will be a bit
more concentrated along the ridges though, as some left entrance
region jet dynamics skim the region. Severe chances remain
negligible, and the heavy rainfall threat overall will be lower.

The majority of the CWA should dry out Saturday night as the trough
departs and ridging expands over the Ohio Valley.  Still, a few
showers may linger in the ridges to the southeast of Pittsburgh into
Sunday morning, thanks to lingering moisture and easterly flow.

Sunday afternoon and night will feature a relative lack of clouds as
the upper ridge settles in and surface high pressure takes control.
Temperatures will nudge a bit higher in the sun, with readings in
the mid 70s to around 80 fairly widespread, around 5 degrees above
average.

&&

.LONG TERM /MONDAY THROUGH THURSDAY/...
KEY MESSAGES:

- Ridging should result in dry and warmer weather into early
  next week.
- Rain chances return for Wednesday and Thursday, with some
  potential for strong thunderstorms..
  ____________________________________________________________

A dry forecast continues for Monday and into Tuesday as ensembles
largely agree on 500mb ridging and surface high pressure. The rising
heights will lead to increasing warmth; temperatures may climb well
into the 80s by Tuesday, levels last seen early in May.

The ensembles start to diverge a bit on the handling of the next
shortwave trough, which crosses the northern/central Plains and into
the Great Lakes during the Wednesday to Friday period. Cluster
analysis shows some strength and timing differences with this wave,
with GEFS generally more in favor of a slower, weaker wave than many
of the ENS members. These differences point to different scenarios
regarding rainfall amounts and severe weather chances. Still, given
the warmth and potential instability ahead of the system, along with
increased shear, we will certainly need to watch for the chance of
impactful thunderstorms.  Indeed, both CIPS and CSU machine-learning
guidance point to severe potential on Wednesday and Thursday.  In
any case, PoPs in the 50-70 percent range as suggested by the NBM
are justified. Temperatures will remain above normal, but will
likely be muted by Thursday given clouds/rain and a possible cold
frontal passage.

By Friday, scattered showers may remain in a continued troughing
pattern and moisture in low-level northwest flow.  Temperatures may
be closer to seasonable levels by this point.

&&

.AVIATION /18Z FRIDAY THROUGH WEDNESDAY/...
A scattering in - Near-normal high temperatures and above-normal low
temperatures can be expected. the precipitation shield and
cloud deck is now noted working into eastern Ohio this afternoon
as slightly drier air intrudes from the west. Some CIG recovery
is expected into the early afternoon based on upstream obs and
hi res guidance save FKL and DUJ which are favored to remain
MVFR.

Precipitation coverage will take on more of an isolated to
scattered nature this afternoon, though with that we'll see
increasing thunder probabilities. Confidence in coverage and
exact timing of a thunderstorm at any site remains low at this
time, but any that do see a heavier shower/thunderstorm could
experience a brief drop in both CIG and VIS to as low as IFR.
Outside of the scattered showers, conditions should remain low
end VFR/high end MVFR with increasing probabilities for MVFR
after 23z. By the overnight hours, all sites should see MVFR to
IFR conditions with a 70-90% confidence. With lingering low
level moisture from earlier rainfall, low confidence chances for
fog increase after 06z; the wrinkle is a passing wave that will
likely reinvigorate showers after midnight, with best chances
south and east of Pittsburgh, which may result in more stratus
formation than fog formation.

MVFR conditions will be slow to erode Saturday morning with
probability for MVFR CIGs remaining 60+% through 16z but will
slowly begin to see improvement from the west.

.Outlook...
Upper trough passage to the south Saturday will maintain
SHRA/TS chances focused south of KPIT. VFR and dry weather
become high probabilities Sunday into Monday under the influence
of high pressure.

&&

.PBZ WATCHES/WARNINGS/ADVISORIES...
PA...None.
OH...None.
WV...None.

&&

SYNOPSIS...CL
NEAR TERM...CL
SHORT TERM...CL
LONG TERM...CL
AVIATION...MLB

Hazardous Weather Outlook
National Weather Service Pittsburgh PA
1240 AM EDT Fri May 17 2024

OHZ039>041-048>050-057>059-068-069-PAZ007>009-013>016-020>022-029-
031-073>078-WVZ001>004-012-021-509>514-180445-
Tuscarawas-Carroll-Columbiana-Coshocton-Harrison-Jefferson OH-
Muskingum-Guernsey-Belmont-Noble-Monroe-Mercer-Venango-Forest-
Lawrence-Butler-Clarion-Jefferson PA-Beaver-Allegheny-Armstrong-
Washington-Greene-Westmoreland-Higher Elevations of Westmoreland-
Fayette-Higher Elevations of Fayette-Indiana-
Higher Elevations of Indiana-Hancock-Brooke-Ohio-Marshall-Wetzel-
Marion-Monongalia-
Ridges of Eastern Monongalia and Northwestern Preston-Preston-
Eastern Preston-Western Tucker-Eastern Tucker-
1240 AM EDT Fri May 17 2024

This Hazardous Weather Outlook is for east central Ohio, western
Pennsylvania, and northern West Virginia.

.DAY ONE...Today and tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

Preliminary Local Storm Report
National Weather Service Pittsburgh PA
355 PM EDT Fri May 17 2024

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0314 PM     Tstm Wnd Dmg     1 W Mount Vernon        40.29N  79.83W
05/17/2024                   Allegheny          PA   Public

            Trees and limbs down along Mansfield Rd

&&

Event Number PBZ2404683

Kramar

Preliminary Local Storm Report
National Weather Service Pittsburgh PA
402 PM EDT Fri May 17 2024

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0254 PM     Tstm Wnd Dmg     Elrama                  40.25N  79.93W
05/17/2024                   Washington         PA   Public

            Tree and limb damage reported along Fairview St

&&

Event Number PBZ2404684

Kramar

Preliminary Local Storm Report
National Weather Service Pittsburgh PA
427 PM EDT Fri May 17 2024

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0310 PM     Tornado          1 SSE Lincoln           40.28N  79.85W
05/17/2024                   Allegheny          PA   Public

            Video relayed of a probable tornado

0350 PM     Tornado          1 N Harrison City       40.36N  79.65W
05/17/2024                   Westmoreland       PA   Public

            Video relayed of a tornado near Harrison City

&&

Event Number PBZ2404685
Event Number PBZ2404686

Kramar

Preliminary Local Storm Report
National Weather Service Pittsburgh PA
504 PM EDT Fri May 17 2024

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0442 PM     Tornado          1 SW Aspinwall          40.49N  79.91W
05/17/2024                   Allegheny          PA   911 Call Center

            Numerous trees down at Washington Boulevard near the
            Highland Park Bridge. Probable tornado

&&

Event Number PBZ2404687

Kramar

Preliminary Local Storm Report
National Weather Service Pittsburgh PA
506 PM EDT Fri May 17 2024

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0443 PM     Funnel Cloud     Aspinwall               40.49N  79.90W
05/17/2024                   Allegheny          PA   Public

            Funnel cloud reported near St Margaret Hospital

&&

Event Number PBZ2404688

Kramar