Severe Thunderstorm Warning 30, NWS Pittsburgh, PA

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PITTSBURGH PA
244 PM EDT FRI MAY 10 2013

.SYNOPSIS...
SHOWERS AND THUNDERSTORMS WILL ACCOMPANY A COLD FRONT AS IT
APPROACHES AND PASSES THROUGH THE REGION OVERNIGHT INTO SATURDAY.
MUCH COOLER CONDITIONS SUNDAY AND MONDAY.

&&

.NEAR TERM /THROUGH SATURDAY/...
LEAD IMPULSE MOVING ACROSS KENTUCKY WITH LARGE AREA OF SHOWERS
AND THUNDERSTORMS WILL CROSS THE REGION THIS EVENING FOLLOWED BY
MAIN COLD FRONT LATER TONIGHT INTO EARLY SATURDAY WITH ADDITIONAL
SHOWERS AND STORMS. JUST ENOUGH DAYTIME WARMING TO CREATE CAPE
VALUES NEAR 1000 J/KG AND WHILE A FEW STORMS MAY PRODUCE WIND
GUSTS OVER 40KTS THIS EVENING NO WIDESPREAD SEVERE WEATHER IS
EXPECTED.

FRONT WILL PUSH EAST OF THE RIDGES DURING THE DAY SATURDAY WITH
TEMPERATURES NOT MOVING MUCH FROM MORNING LOWS. SHOWERS WILL
DECREASE WEST TO EAST DURING THE DAY DRIER AIR MOVES IN BEHIND
FRONT.

&&

.SHORT TERM /SATURDAY NIGHT THROUGH MONDAY/...
A SECONDARY COLD FRONT WILL MOVE QUICKLY SOUTH AND EAST ACROSS
REGION SATURDAY NIGHT WITH CHANCE POPS FOR SHOWERS. BEHIND THIS
FRONT SIGNIFICANTLY COLDER AT THE SURFACE AND ALOFT. HAVE KEPT
SLIGHT CHANCE POPS ACROSS THE NORTH SUNDAY AFTERNOON IN COLD FLOW
OF THE LAKES AND COLD POOL ALOFT. SURFACE RIDGE WILL BEGIN TO
BUILD IN ACROSS REGION BY SUNDAY NIGHT CLEARING SKIES AND ALLOWING
TEMPERATURES TO FALL WELL INTO THE 30S. FROST OR FREEZE POSSIBLE
SUNDAY NIGHT AND WILL HIGHLIGHT IN HWO. OVERALL TEMPERATURES JUST
A BIT UNDER MODEL MOS.

&&

.LONG TERM /MONDAY NIGHT THROUGH FRIDAY/...
MDL ENSEMBLES AND HPC CHARTS SHOW HIGH PRES IN CTRL ERLY IN THE
WEEK. A WRMFNT WL APRCH AND PASS E THRU THE AREA WED INTO WED NGT.
MDLS INDICATE SOME LMTD INSTAB WITH THE FNT SO INCLUDED CHC POPS FOR
SHWRS/TSTMS. MDL SOLNS DIFFER LATE IN THE PD...HOWEVER PREFERED THE
SLOWER ENSEMBLE SOLNS BRINGING A CDFNT SLOWLY THRU THE AREA FRI.
KEPT LOW CHC POPS ATTM DUE TO TIMING UNCERTAINTIES. EXP COOL TEMPS
ERLY IN THE WEEK...WITH ABV SEASONAL AVG READINGS RETURNING BY WED.

&&

.AVIATION /19Z FRIDAY THROUGH WEDNESDAY/...
VFR CONDS THIS AFTN WL DROP TO MVFR AS SHWRS/TSTMS MOVE IN AHD OF
AN APRCHG CDFNT. MENTIONED A PD OF TSTMS LT THIS AFTN...ALTHOUGH
WHERE INSTAB IS LESS N OF I 80 KEPT VCTS AS TSTM COVG SHOULD BE
MORE QUESTIONABLE THERE. CIGS SHOULD CONT TO LWR TNGT THRU MVFR TO
IFR OVRNGT. EXP FROPA AND A WSHFT TO THE WNW SAT MRNG WITH CIGS
GRDLY LIFTG BACK TO MVFR.

.OUTLOOK.../SATURDAY NIGHT THROUGH WEDNESDAY/...
RESTRNS ARE PSBL WITH A SECONDARY CDFNT SAT EVE...THEN VFR CONDS
EXPD WITH BLDG HIGH PRES INTO ERLY NXT WK. RESTRNS PSBL WED AS A
WRMFNT APRCHS.

&&

.PBZ WATCHES/WARNINGS/ADVISORIES...
MD...NONE.
OH...NONE.
PA...NONE.
WV...NONE.

&&

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE PITTSBURGH PA
252 PM EDT FRI MAY 10 2013

OHZ039>041-048>050-057>059-068-069-PAZ007>009-013>016-020>023-029-
031-073>076-WVZ001>004-012-021>023-111900-
TUSCARAWAS-CARROLL-COLUMBIANA-COSHOCTON-HARRISON-JEFFERSON OH-
MUSKINGUM-GUERNSEY-BELMONT-NOBLE-MONROE-MERCER-VENANGO-FOREST-
LAWRENCE-BUTLER-CLARION-JEFFERSON PA-BEAVER-ALLEGHENY-ARMSTRONG-
INDIANA-WASHINGTON-GREENE-WESTMORELAND-WESTMORELAND RIDGES-FAYETTE-
FAYETTE RIDGES-HANCOCK-BROOKE-OHIO-MARSHALL-WETZEL-MARION-MONONGALIA-
PRESTON-
252 PM EDT FRI MAY 10 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL OHIO...NORTHWEST
PENNSYLVANIA...SOUTHWEST PENNSYLVANIA...WEST CENTRAL
PENNSYLVANIA...NORTHERN WEST VIRGINIA AND NORTHERN PANHANDLE OF
WEST VIRGINIA.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON AND
THIS EVENING. THE PRIMARY THREAT IS DAMAGING WINDS.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

FROST IS POSSIBLE AT DAWN MONDAY AND TUESDAY WITH CANADIAN AIR
BUILDING INTO THE AREA. THOSE WITH SENSITIVE PLANTS NEED TO MONITOR
FUTURE FORECASTS TO DETERMINE IF ACTION IS REQUIRED.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

MDZ001-WVZ041-111900-
GARRETT-TUCKER-
252 PM EDT FRI MAY 10 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN MARYLAND AND NORTHERN
WEST VIRGINIA.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON AND
THIS EVENING. THE PRIMARY THREAT IS DAMAGING WIND GUSTS.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PITTSBURGH PA
243 PM EDT FRI MAY 10 2013

OHZ039-040-049-050-058-059-068-069-WVZ002>004-012-101945-
BELMONT OH-BROOKE WV-CARROLL OH-GUERNSEY OH-HARRISON OH-JEFFERSON OH-
MARSHALL WV-MONROE OH-NOBLE OH-OHIO WV-TUSCARAWAS OH-WETZEL WV-
243 PM EDT FRI MAY 10 2013

...STRONG THUNDERSTORMS WILL AFFECT BELMONT...GUERNSEY...HARRISON...
MARSHALL...NORTH CENTRAL WETZEL...NORTHEASTERN NOBLE...NORTHERN
MONROE...OHIO...SOUTHEASTERN TUSCARAWAS...SOUTHERN BROOKE...SOUTHERN
JEFFERSON AND SOUTHWESTERN CARROLL COUNTIES...

AT 241 PM EDT...STRONG THUNDERSTORMS WERE ALONG A LINE FROM 3 MILES
WEST OF CAMBRIDGE TO 5 MILES NORTHEAST OF WOODSFIELD TO 5 MILES EAST
OF FAIRVIEW...MOVING NORTHEAST AT 30 MPH.

WIND GUSTS TO 40 MPH AND SMALL HAIL ARE POSSIBLE WITH THESE STORMS.

  LOCATIONS IMPACTED INCLUDE...
  PROCTOR...            FAIRVIEW...           WOODSFIELD...
  SENECAVILLE...        SENECA LAKE PARK...   ROUND BOTTOM...
  CLARINGTON...         CAMERON...            BYESVILLE...
  WOODLANDS...          CAMBRIDGE...          SOMERTON...

  HIGHWAYS IMPACTED INCLUDE...
  I-470 IN WEST VIRGINIA BETWEEN MILE MARKERS 0 AND 3.
  I-470 IN OHIO BETWEEN MILE MARKERS 0 AND 6.
  I-70 IN WEST VIRGINIA BETWEEN MILE MARKERS 0 AND 14.
  I-70 IN OHIO BETWEEN MILE MARKERS 171 AND 225.
  I-77 IN OHIO BETWEEN MILE MARKERS 37 AND 65.

PLEASE REPORT SIGNIFICANT WEATHER BY CALLING...412-262-1988...POSTING
TO THE NWS PITTSBURGH FACEBOOK PAGE...OR USING TWITTER
@NWSPITTSBURGH.

LAT...LON 4009 8172 4050 8138 4027 8068 4025 8052
      3982 8052 3968 8065 3975 8112 3995 8173

07

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>