Severe Thunderstorm Warning 13, NWS Pittsburgh, PA

135 
WWUS51 KPBZ 011633
SVSPBZ

Severe Weather Statement
National Weather Service Pittsburgh PA
1133 AM EST WED MAR 1 2017

WVC049-061-011643-
/O.CAN.KPBZ.SV.W.0013.000000T0000Z-170301T1700Z/
Monongalia WV-Marion WV-
1133 AM EST WED MAR 1 2017

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN MONONGALIA AND EASTERN
MARION COUNTIES IS CANCELLED...

The storms that prompted the warning have moved out of the area.
Therefore, the warning has been cancelled.

LAT...LON 3910 7972 3956 7959 3975 7940 3972 7893
      3943 7911 3921 7949 3918 7947 3921 7934
      3919 7929 3909 7935 3907 7930
TIME...MOT...LOC 1633Z 261DEG 56KT 3976 7933 3917 7958 

$$

MDC023-PAC051-WVC077-093-011700-
/O.CON.KPBZ.SV.W.0013.000000T0000Z-170301T1700Z/
Garrett MD-Fayette PA-Tucker WV-Preston WV-
1133 AM EST WED MAR 1 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL NOON EST FOR
GARRETT...SOUTHEASTERN FAYETTE...CENTRAL TUCKER AND SOUTHEASTERN
PRESTON COUNTIES...

At 1133 AM EST, severe thunderstorms were located along a line
extending from near Ursina to near Thomas, moving east at 65 mph.

HAZARD...60 mph wind gusts. 

SOURCE...Radar. 

IMPACT...Expect damage to trees and power lines, resulting in some 
         power outages. 

Locations impacted include...
Mountain Lake Park...             Oakland...
Parsons...                        Terra Alta...
Davis...                          Thomas...
Bittinger...                      Grantsville...
Loch Lynn Heights...              Friendsville...
Deer Park...                      Accident...

This includes the following highways...
  Interstate 68 in Maryland between mile markers 1 and 30.
 
  Interstate 68 in West Virginia near mile marker 32.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

Move to an interior room on the lowest floor of a building.

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

&&

LAT...LON 3910 7972 3956 7959 3975 7940 3972 7893
      3943 7911 3921 7949 3918 7947 3921 7934
      3919 7929 3909 7935 3907 7930
TIME...MOT...LOC 1633Z 261DEG 56KT 3976 7933 3917 7958 

HAIL...<.75IN
WIND...60MPH
 
$$
34

398 
WWUS51 KPBZ 011651
SVSPBZ

Severe Weather Statement
National Weather Service Pittsburgh PA
1151 AM EST WED MAR 1 2017

MDC023-PAC051-WVC077-093-011700-
/O.EXP.KPBZ.SV.W.0013.000000T0000Z-170301T1700Z/
Garrett MD-Fayette PA-Tucker WV-Preston WV-
1151 AM EST WED MAR 1 2017

...THE SEVERE THUNDERSTORM WARNING FOR GARRETT...SOUTHEASTERN
FAYETTE...CENTRAL TUCKER AND SOUTHEASTERN PRESTON COUNTIES WILL
EXPIRE AT NOON EST...
    
The storms that prompted the warning have weakened below severe
limits and have exited the warned area. Therefore, the warning will
be allowed to expire.

LAT...LON 3910 7972 3956 7959 3975 7940 3972 7893
      3943 7911 3921 7949 3918 7947 3921 7934
      3919 7929 3909 7935 3907 7930
TIME...MOT...LOC 1650Z 261DEG 56KT 3980 7901 3921 7927 

$$
34

Area Forecast Discussion
National Weather Service Pittsburgh PA
1059 AM EST Wed Mar 1 2017

.SYNOPSIS...
The advance of a strong cold front has brought showers and
thunderstorms to the Upper Ohio Region for today. Much cooler
temperatures will then last through much of the weekend.

&&

.NEAR TERM /THROUGH TONIGHT/...
The third batch of rain supported by the upper shortwave us
swiftly pushing east. Currently, greatest severe weather threat
remains SE of PIT where better instability and shear are.
Moderate rain will continue for the next hour or two before a
break occurs with subsidence ahead of the cold front currently
lagging in Indiana. Will hold on to the flash flood watch given
the moderate rain still over the CWA and on-going flooding.

Visible imagery shows clearing west of the area and
near term hi-res models forecast convection to develop and cross
the region in the late afternoon. The strength of the line of
progged convection is uncertain at this time and will depend on
how unstable the lower atmosphere can get before the front
arrives. Nonetheless, strong wind gusts are likely to occur if
thunderstorms develop due to significantly strong wind shear.

Late day cold frontal passage will end the severe weather
threat and return cold and snow showers chances to the region.
Wind gusts behind the front are expected to reach advisory
criteria as cold advection at the top of the boundary layer
improves mixing. A wind advisory will likely be issued for
tonight once current convection moves out of the CWA.

&&

.SHORT TERM /THURSDAY THROUGH FRIDAY/...
After the FROPA, upper troughing, cold advection, and limited
lake and terrain enhancement should result in scattered snow
showers through Thursday as temperatures return to sub average.

Clipper system which has been well-advertised by the models
digs over the region on Thursday night with some accumulating
snow expected. Snow showers should linger and possibly
reenhance Friday afternoon with steep low-level lapse rates.
Accumulation rates may initially struggle with warm ground, but
cannot rule out the eventual need for a winter weather advisory
in at least the ridges.

&&

.LONG TERM /FRIDAY NIGHT THROUGH TUESDAY/...
Troughing pattern in the wake of the clipper Saturday
transitions to a more zonal/flat ridge pattern for Sunday and
Monday, and then a more amplified pattern once again by Tuesday
with another trough/front approaching. Mainly dry weather for
Saturday may be followed by a weak disturbance on Sunday, and
then better precipitation chances thereafter as southwest flow
and moisture ramp up again. Below average temperatures at the
start will rise moderate early in the new week.

&&

.AVIATION /16Z WEDNESDAY THROUGH SUNDAY/...
Shortwaves ahead of an approaching cold front should result in
mainly MVFR conditions through early this morning. The waves
should spread showers and thunderstorms across the region
through this morning with occasional IFR possible, with
additional showers and possible thunderstorms are expected with
the passage of the cold front this afternoon.

A strong jet in place will result in a LLWS potential early
until mixing begins later this morning results in mixing some of
this wind to the ground as sfc gusts. A strong pressure gradient
and cold advection should keep strong W gusts in the TAF
tonight.

.OUTLOOK...
Periodic restrictions are likely through Friday as cold low
pressure crosses the region.

&&

.PBZ WATCHES/WARNINGS/ADVISORIES...
MD...Flash Flood Watch until 8 PM EST this evening for MDZ001.
OH...Flash Flood Watch until 8 PM EST this evening for OHZ039>041-
     048>050-057>059-068-069.
PA...Flash Flood Watch until 8 PM EST this evening for PAZ020-021-
     029-031-073>076.
WV...Flash Flood Watch until 8 PM EST this evening for WVZ001>004-
     012-021-509>514.

&&

Hazardous Weather Outlook
National Weather Service Pittsburgh PA
245 AM EST Wed Mar 1 2017

MDZ001-OHZ057>059-068-069-PAZ021-029-031-073>076-WVZ002>004-012-021-
509>514-020745-
Garrett-Muskingum-Guernsey-Belmont-Noble-Monroe-Allegheny-Washington-
Greene-Westmoreland-Westmoreland Ridges-Fayette-Fayette Ridges-
Brooke-Ohio-Marshall-Wetzel-Marion-Monongalia-
Ridges of Eastern Monongalia and Northwestern Preston-Preston-
Eastern Preston-Western Tucker-Eastern Tucker-
245 AM EST Wed Mar 1 2017

...FLASH FLOOD WATCH IN EFFECT FROM 6 AM EST THIS MORNING THROUGH
THIS EVENING...

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

.DAY ONE...Today and Tonight.

There is an enhanced risk of severe thunderstorms today. The main
severe threat is expected to be damaging wind. Isolated tornadoes are
also possible.

Also, please listen to NOAA Weather Radio or go to weather.gov on
the Internet for more information about the following hazards.

   Flash Flood Watch.

A cold front will end these threats by this evening, but wind gusts
in excess of 40 mph may require a wind advisory, especially over the
ridges.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

Accumulating snowfall is expected on Thursday night and early
Friday. An Advisory may be required, especially over the higher
elevations.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.

OHZ039>041-048>050-PAZ007>009-013>016-020-022-023-WVZ001-020745-
Tuscarawas-Carroll-Columbiana-Coshocton-Harrison-Jefferson-Mercer-
Venango-Forest-Lawrence-Butler-Clarion-Beaver-Armstrong-Indiana-
Hancock-
245 AM EST Wed Mar 1 2017

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

.DAY ONE...Today and Tonight.

Severe thunderstorms are possible today with the main threat coming
from damaging wind.

A cold front will end that threat by this evening, but wind gusts in
excess of 40 mph may require a wind advisory.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

Accumulating snowfall is expected on Thursday night and early Friday.
An Advisory may be required.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.

15

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
842 AM EST WED MAR 01 2017

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

0823 AM     FLASH FLOOD      FARMINGTON              39.81N  79.57W
03/01/2017                   FAYETTE            PA   TRAINED SPOTTER

            MINOR FLOODING ON DEAD MANS CREEK N FARMINGTON AREA.
            1.50 INCHES RAINFALL.

&&

EVENT NUMBER PBZ1700822

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
1009 AM EST WED MAR 01 2017

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

1008 AM     FLOOD            LONE PINE               40.07N  80.17W
03/01/2017                   WASHINGTON         PA   AMATEUR RADIO

            LONE PINE ROAD IS FLOODED IN VICINITY OF INTERSECTION
            WITH WEAVER RUN ROAD.

&&

EVENT NUMBER PBZ1700823

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
1025 AM EST WED MAR 01 2017

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

1025 AM     HEAVY RAIN       MONESSEN                40.15N  79.88W
03/01/2017  M2.00 INCH       WESTMORELAND       PA   TRAINED SPOTTER

            RAIN FELL IN LAST 6 HOURS.

&&

EVENT NUMBER PBZ1700824

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
1032 AM EST WED MAR 01 2017

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

1031 AM     FLOOD            WEST ALEXANDER          40.10N  80.51W
03/01/2017                   WASHINGTON         PA   AMATEUR RADIO

            OLD BRICK ROAD FLOODED FROM NEARBY STREAM.

&&

EVENT NUMBER PBZ1700825

Special Weather Statement
National Weather Service Pittsburgh PA
1100 AM EST WED MAR 1 2017

MDZ001-PAZ074>076-WVZ021-509>512-011645-
Garrett-Fayette Ridges-Westmoreland Ridges-Fayette-Eastern
Preston-Ridges of Eastern Monongalia and Northwestern
Preston-Marion-Monongalia-Preston-
1100 AM EST WED MAR 1 2017

...A LINE OF STRONG THUNDERSTORMS CAPABLE OF PRODUCING GUSTY WIND
WILL AFFECT GARRETT...SOUTHEASTERN WESTMORELAND...FAYETTE...EASTERN
MONONGALIA...PRESTON AND SOUTHEASTERN MARION COUNTIES...

At 1100 AM EST, radar indicated strong thunderstorms were located
along a line extending from near Mount Pleasant to near Pleasant
Valley. Movement was east at 55 mph.

Wind gusts up to 55 mph are possible with these storms.

Locations impacted include...
Morgantown...                     Fairmont...
Uniontown...                      Connellsville...
Westover...                       Kingwood...
Mountain Lake Park...             Oakland...
Terra Alta...                     Rowlesburg...
Bittinger...                      Pleasant Valley...

This includes the following highways...
  Interstate 68 in Maryland between mile markers 1 and 30.

  Interstate 68 in West Virginia between mile markers 1 and 32.

  Pennsylvania Turnpike between mile markers 88 and 99.

  Interstate 79 in West Virginia between mile markers 134 and 152.

These storms may intensify, so monitor local radio or television
stations for additional information and possible warnings from the
National Weather Service.

LAT...LON 3948 7907 3947 7911 3939 7916 3929 7935
      3930 7989 3943 7989 3945 7994 3939 8009
      3941 8011 3940 8021 4013 7951 4017 7914
      4011 7918 4012 7921 4008 7927 3986 7942
      3979 7935 3978 7939 3972 7939 3972 7893
TIME...MOT...LOC 1600Z 261DEG 47KT 4008 7949 3938 8017

34

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
1104 AM EST WED MAR 01 2017

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

1103 AM     HEAVY RAIN       NORWICH                 39.98N  81.79W
03/01/2017  M2.00 INCH       MUSKINGUM          OH   TRAINED SPOTTER

            RAIN FELL SINCE MIDNIGHT.

&&

EVENT NUMBER PBZ1700826