Alert archive / Pennsylvania / Flash Flood Watches in 2011
Flash Flood Watch 2, NWS Pittsburgh, PA
NWS Pittsburgh, PA issued this flash flood watch at Apr 21, 2011, 2:55 PM EDT for 11 counties in Ohio; 14 counties in Pennsylvania; 6 counties in West Virginia. It took effect at Apr 22, 2011, 2:00 PM EDT. It was in force for 30 hr.
The area
The counties it named.
The facts
- Issued
- Apr 21, 2011, 2:55 PM EDT (18:55 UTC)
- In effect from
- Apr 22, 2011, 2:00 PM EDT
- Expired
- Apr 23, 2011, 8:00 PM EDT
- In force
- 30 hr
- Issued by
- NWS Pittsburgh, PA
- Flood severity
- None
All 31 counties
Belmont County, OH, Carroll County, OH, Columbiana County, OH, Coshocton County, OH, Guernsey County, OH, Harrison County, OH, Jefferson County, OH, Monroe County, OH, Muskingum County, OH, Noble County, OH, Tuscarawas County, OH, Allegheny County, PA, Armstrong County, PA, Beaver County, PA, Butler County, PA, Clarion County, PA, Fayette County, PA, Forest County, PA, Greene County, PA, Jefferson County, PA, Lawrence County, PA, Mercer County, PA, Venango County, PA, Washington County, PA, Westmoreland County, PA, Brooke County, WV, Hancock County, WV, Marion County, WV, Marshall County, WV, Ohio County, WV, Wetzel County, WV
The radar
The Pittsburgh radar (KPBZ), 25 km from the middle of the area, began a volume at 18:53 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Pittsburgh, PA (KPIT), launched 12:00Z, 6.9 hours before the alert went out and 32 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 1 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 971 m above ground
- 0-6 km bulk shear
- 92 kt
- 0-1 km storm-relative helicity
- -36 m²/s²
- 0-3 km storm-relative helicity
- -7 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
807 WGUS61 KPBZ 211855 FFAPBZ URGENT - IMMEDIATE BROADCAST REQUESTED FLOOD WATCH NATIONAL WEATHER SERVICE PITTSBURGH PA 255 PM EDT THU APR 21 2011 MDZ001-OHZ039>041-048>050-057>059-068-069-PAZ007>009-013>016- 020>023-029-031-073>076-WVZ001>004-012-021>023-041-220400- /O.NEW.KPBZ.FF.A.0002.110422T1200Z-110424T0000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ GARRETT-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-TUCKER- INCLUDING THE CITIES OF...OAKLAND MD...GRANTSVILLE... NEW PHILADELPHIA...DOVER...UHRICHSVILLE...CARROLLTON... EAST LIVERPOOL...SALEM...COLUMBIANA...EAST PALESTINE... WELLSVILLE...CALCUTTA...COSHOCTON...CADIZ...HOPEDALE... STEUBENVILLE...ZANESVILLE...CAMBRIDGE...MARTINS FERRY... ST. CLAIRSVILLE...BELLAIRE...BARNESVILLE...SHADYSIDE... BRIDGEPORT...CALDWELL...WOODSFIELD...SHARON...HERMITAGE... GROVE CITY...GREENVILLE...FARRELL...OIL CITY...FRANKLIN... SUGARCREEK...TIONESTA...NEW CASTLE...ELLWOOD CITY...BUTLER... ZELIENOPLE...CLARION...PUNXSUTAWNEY...BROOKVILLE... REYNOLDSVILLE...BROCKWAY...ALIQUIPPA...BEAVER FALLS...AMBRIDGE... MONACA...BEAVER...PITTSBURGH METRO AREA...KITTANNING... FORD CITY...LEECHBURG...FREEPORT...APOLLO...INDIANA... WASHINGTON...CANONSBURG...DONORA...CALIFORNIA...CHARLEROI... MONONGAHELA...MCMURRAY...WAYNESBURG...FAIRDALE...GREENSBURG... NEW KENSINGTON...JEANNETTE...LATROBE...MONESSEN...LIGONIER... DONEGAL...NEW FLORENCE...ACME...CHAMPION...UNIONTOWN... CONNELLSVILLE...POINT MARION...NORMALVILLE...FARMINGTON... OHIOPYLE...MARKLEYSBURG...TORONTO...WEIRTON...WHEELING... MOUNDSVILLE...NEW MARTINSVILLE...FAIRMONT...MORGANTOWN... KINGWOOD...TERRA ALTA...PARSONS...DAVIS...THOMAS 255 PM EDT THU APR 21 2011 ...FLASH FLOOD WATCH IN EFFECT FROM FRIDAY MORNING THROUGH SATURDAY EVENING... THE NATIONAL WEATHER SERVICE IN PITTSBURGH HAS ISSUED A * FLASH FLOOD WATCH FOR PORTIONS OF WESTERN MARYLAND...EAST CENTRAL OHIO...PENNSYLVANIA AND WEST VIRGINIA...INCLUDING THE FOLLOWING AREAS...IN WESTERN MARYLAND...GARRETT. IN EAST CENTRAL OHIO...BELMONT...CARROLL...COLUMBIANA...COSHOCTON... GUERNSEY...HARRISON...JEFFERSON OH...MONROE...MUSKINGUM... NOBLE AND TUSCARAWAS. IN PENNSYLVANIA...ALLEGHENY... ARMSTRONG...BEAVER...BUTLER...CLARION...FAYETTE...FAYETTE RIDGES...FOREST...GREENE...INDIANA...JEFFERSON PA...LAWRENCE... MERCER...VENANGO...WASHINGTON...WESTMORELAND AND WESTMORELAND RIDGES. IN WEST VIRGINIA...BROOKE...HANCOCK...MARION... MARSHALL...MONONGALIA...OHIO...PRESTON...TUCKER AND WETZEL. * FROM FRIDAY MORNING THROUGH SATURDAY EVENING * RAIN...MODERATE TO LOCALLY HEAVY AT TIMES...WILL SPREAD ACROSS THE REGION FRIDAY...PERSISTING THROUGH SATURDAY. RAINFALL OF 1 TO 3 INCHES IS POSSIBLE. * THIS RAIN...IN COMBINATION WITH NEARLY SATURATED GROUND FROM RECENT RAINFALL...WILL CREATE THE POTENTIAL FOR RAPIDLY RISING WATER IN STREAMS AND CREEKS...AS WELL AS IN AREAS OF POOR DRAINAGE. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION. YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION SHOULD FLASH FLOOD WARNINGS BE ISSUED. && $$
8 follow-up statements
545 WGUS61 KPBZ 220224 FFAPBZ FLOOD WATCH NATIONAL WEATHER SERVICE PITTSBURGH PA 1024 PM EDT THU APR 21 2011 MDZ001-OHZ039>041-048>050-057>059-068-069-PAZ007>009-013>016- 020>023-029-031-073>076-WVZ001>004-012-021>023-041-221030- /O.CON.KPBZ.FF.A.0002.110422T1200Z-110424T0000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ GARRETT-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-TUCKER- INCLUDING THE CITIES OF...OAKLAND MD...GRANTSVILLE... NEW PHILADELPHIA...DOVER...UHRICHSVILLE...CARROLLTON... EAST LIVERPOOL...SALEM...COLUMBIANA...EAST PALESTINE... WELLSVILLE...CALCUTTA...COSHOCTON...CADIZ...HOPEDALE... STEUBENVILLE...ZANESVILLE...CAMBRIDGE...MARTINS FERRY... ST. CLAIRSVILLE...BELLAIRE...BARNESVILLE...SHADYSIDE... BRIDGEPORT...CALDWELL...WOODSFIELD...SHARON...HERMITAGE... GROVE CITY...GREENVILLE...FARRELL...OIL CITY...FRANKLIN... SUGARCREEK...TIONESTA...NEW CASTLE...ELLWOOD CITY...BUTLER... ZELIENOPLE...CLARION...PUNXSUTAWNEY...BROOKVILLE... REYNOLDSVILLE...BROCKWAY...ALIQUIPPA...BEAVER FALLS...AMBRIDGE... MONACA...BEAVER...PITTSBURGH METRO AREA...KITTANNING... FORD CITY...LEECHBURG...FREEPORT...APOLLO...INDIANA... WASHINGTON...CANONSBURG...DONORA...CALIFORNIA...CHARLEROI... MONONGAHELA...MCMURRAY...WAYNESBURG...FAIRDALE...GREENSBURG... NEW KENSINGTON...JEANNETTE...LATROBE...MONESSEN...LIGONIER... DONEGAL...NEW FLORENCE...ACME...CHAMPION...UNIONTOWN... CONNELLSVILLE...POINT MARION...NORMALVILLE...FARMINGTON... OHIOPYLE...MARKLEYSBURG...TORONTO...WEIRTON...WHEELING... MOUNDSVILLE...NEW MARTINSVILLE...FAIRMONT...MORGANTOWN... KINGWOOD...TERRA ALTA...PARSONS...DAVIS...THOMAS 1024 PM EDT THU APR 21 2011 ...FLASH FLOOD WATCH REMAINS IN EFFECT FROM 8 AM EDT FRIDAY THROUGH SATURDAY EVENING... THE FLASH FLOOD WATCH CONTINUES FOR * PORTIONS OF WESTERN MARYLAND...EAST CENTRAL OHIO... PENNSYLVANIA AND WEST VIRGINIA...INCLUDING THE FOLLOWING AREAS...IN WESTERN MARYLAND...GARRETT. IN EAST CENTRAL OHIO... BELMONT...CARROLL...COLUMBIANA...COSHOCTON...GUERNSEY... HARRISON...JEFFERSON OH...MONROE...MUSKINGUM...NOBLE AND TUSCARAWAS. IN PENNSYLVANIA...ALLEGHENY...ARMSTRONG...BEAVER... BUTLER...CLARION...FAYETTE...FAYETTE RIDGES...FOREST... GREENE...INDIANA...JEFFERSON PA...LAWRENCE...MERCER... VENANGO...WASHINGTON...WESTMORELAND AND WESTMORELAND RIDGES. IN WEST VIRGINIA...BROOKE...HANCOCK...MARION...MARSHALL... MONONGALIA...OHIO...PRESTON...TUCKER AND WETZEL. * FROM 8 AM EDT FRIDAY THROUGH SATURDAY EVENING * RAIN...MODERATE TO LOCALLY HEAVY AT TIMES...WILL SPREAD ACROSS THE REGION FRIDAY...PERSISTING THROUGH SATURDAY. RAINFALL OF 1 TO 2 INCHES IS POSSIBLE WITH LOCALLY HIGHER AMOUNTS. * THIS RAIN...IN COMBINATION WITH NEARLY SATURATED GROUND FROM RECENT RAINFALL...WILL CREATE THE POTENTIAL FOR RAPIDLY RISING WATER IN STREAMS AND CREEKS...AS WELL AS IN AREAS OF POOR DRAINAGE. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION. YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION SHOULD FLASH FLOOD WARNINGS BE ISSUED. && $$
500 WGUS61 KPBZ 220656 FFAPBZ URGENT - IMMEDIATE BROADCAST REQUESTED FLOOD WATCH NATIONAL WEATHER SERVICE PITTSBURGH PA 256 AM EDT FRI APR 22 2011 MDZ001-OHZ039>041-048>050-057>059-068-069-PAZ007>009-013>016- 020>023-029-031-073>076-WVZ001>004-012-021>023-041-221500- /O.EXT.KPBZ.FF.A.0002.110422T1800Z-110424T0000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ GARRETT-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-TUCKER- INCLUDING THE CITIES OF...OAKLAND MD...GRANTSVILLE... NEW PHILADELPHIA...DOVER...UHRICHSVILLE...CARROLLTON... EAST LIVERPOOL...SALEM...COLUMBIANA...EAST PALESTINE... WELLSVILLE...CALCUTTA...COSHOCTON...CADIZ...HOPEDALE... STEUBENVILLE...ZANESVILLE...CAMBRIDGE...MARTINS FERRY... ST. CLAIRSVILLE...BELLAIRE...BARNESVILLE...SHADYSIDE... BRIDGEPORT...CALDWELL...WOODSFIELD...SHARON...HERMITAGE... GROVE CITY...GREENVILLE...FARRELL...OIL CITY...FRANKLIN... SUGARCREEK...TIONESTA...NEW CASTLE...ELLWOOD CITY...BUTLER... ZELIENOPLE...CLARION...PUNXSUTAWNEY...BROOKVILLE... REYNOLDSVILLE...BROCKWAY...ALIQUIPPA...BEAVER FALLS...AMBRIDGE... MONACA...BEAVER...PITTSBURGH METRO AREA...KITTANNING... FORD CITY...LEECHBURG...FREEPORT...APOLLO...INDIANA... WASHINGTON...CANONSBURG...DONORA...CALIFORNIA...CHARLEROI... MONONGAHELA...MCMURRAY...WAYNESBURG...FAIRDALE...GREENSBURG... NEW KENSINGTON...JEANNETTE...LATROBE...MONESSEN...LIGONIER... DONEGAL...NEW FLORENCE...ACME...CHAMPION...UNIONTOWN... CONNELLSVILLE...POINT MARION...NORMALVILLE...FARMINGTON... OHIOPYLE...MARKLEYSBURG...TORONTO...WEIRTON...WHEELING... MOUNDSVILLE...NEW MARTINSVILLE...FAIRMONT...MORGANTOWN... KINGWOOD...TERRA ALTA...PARSONS...DAVIS...THOMAS 256 AM EDT FRI APR 22 2011 ...FLASH FLOOD WATCH NOW IN EFFECT FROM 2 PM EDT THIS AFTERNOON THROUGH SATURDAY EVENING... THE FLASH FLOOD WATCH IS NOW IN EFFECT FOR * PORTIONS OF WESTERN MARYLAND...EAST CENTRAL OHIO... PENNSYLVANIA AND WEST VIRGINIA...INCLUDING THE FOLLOWING AREAS...IN WESTERN MARYLAND...GARRETT. IN EAST CENTRAL OHIO... BELMONT...CARROLL...COLUMBIANA...COSHOCTON...GUERNSEY... HARRISON...JEFFERSON OH...MONROE...MUSKINGUM...NOBLE AND TUSCARAWAS. IN PENNSYLVANIA...ALLEGHENY...ARMSTRONG...BEAVER... BUTLER...CLARION...FAYETTE...FAYETTE RIDGES...FOREST... GREENE...INDIANA...JEFFERSON PA...LAWRENCE...MERCER... VENANGO...WASHINGTON...WESTMORELAND AND WESTMORELAND RIDGES. IN WEST VIRGINIA...BROOKE...HANCOCK...MARION...MARSHALL... MONONGALIA...OHIO...PRESTON...TUCKER AND WETZEL. * FROM 2 PM EDT THIS AFTERNOON THROUGH SATURDAY EVENING * RAIN...MODERATE TO LOCALLY HEAVY AT TIMES...WILL SPREAD ACROSS THE REGION TODAY...PERSISTING THROUGH SATURDAY. RAINFALL OF 1 TO 2 INCHES IS POSSIBLE WITH LOCALLY HIGHER AMOUNTS. * THIS RAIN...IN COMBINATION WITH NEARLY SATURATED GROUND FROM RECENT RAINFALL...WILL CREATE THE POTENTIAL FOR RAPIDLY RISING WATER IN STREAMS AND CREEKS...AS WELL AS IN AREAS OF POOR DRAINAGE. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION. YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION SHOULD FLASH FLOOD WARNINGS BE ISSUED. && $$
653 WGUS61 KPBZ 221403 FFAPBZ FLOOD WATCH NATIONAL WEATHER SERVICE PITTSBURGH PA 1003 AM EDT FRI APR 22 2011 MDZ001-OHZ039>041-048>050-057>059-068-069-PAZ007>009-013>016- 020>023-029-031-073>076-WVZ001>004-012-021>023-041-222215- /O.CON.KPBZ.FF.A.0002.110422T1800Z-110424T0000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ GARRETT-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-TUCKER- INCLUDING THE CITIES OF...OAKLAND MD...GRANTSVILLE... NEW PHILADELPHIA...DOVER...UHRICHSVILLE...CARROLLTON... EAST LIVERPOOL...SALEM...COLUMBIANA...EAST PALESTINE... WELLSVILLE...CALCUTTA...COSHOCTON...CADIZ...HOPEDALE... STEUBENVILLE...ZANESVILLE...CAMBRIDGE...MARTINS FERRY... ST. CLAIRSVILLE...BELLAIRE...BARNESVILLE...SHADYSIDE... BRIDGEPORT...CALDWELL...WOODSFIELD...SHARON...HERMITAGE... GROVE CITY...GREENVILLE...FARRELL...OIL CITY...FRANKLIN... SUGARCREEK...TIONESTA...NEW CASTLE...ELLWOOD CITY...BUTLER... ZELIENOPLE...CLARION...PUNXSUTAWNEY...BROOKVILLE... REYNOLDSVILLE...BROCKWAY...ALIQUIPPA...BEAVER FALLS...AMBRIDGE... MONACA...BEAVER...PITTSBURGH METRO AREA...KITTANNING... FORD CITY...LEECHBURG...FREEPORT...APOLLO...INDIANA... WASHINGTON...CANONSBURG...DONORA...CALIFORNIA...CHARLEROI... MONONGAHELA...MCMURRAY...WAYNESBURG...FAIRDALE...GREENSBURG... NEW KENSINGTON...JEANNETTE...LATROBE...MONESSEN...LIGONIER... DONEGAL...NEW FLORENCE...ACME...CHAMPION...UNIONTOWN... CONNELLSVILLE...POINT MARION...NORMALVILLE...FARMINGTON... OHIOPYLE...MARKLEYSBURG...TORONTO...WEIRTON...WHEELING... MOUNDSVILLE...NEW MARTINSVILLE...FAIRMONT...MORGANTOWN... KINGWOOD...TERRA ALTA...PARSONS...DAVIS...THOMAS 1003 AM EDT FRI APR 22 2011 ...FLASH FLOOD WATCH REMAINS IN EFFECT FROM 2 PM EDT THIS AFTERNOON THROUGH SATURDAY EVENING... THE FLASH FLOOD WATCH CONTINUES FOR * PORTIONS OF WESTERN MARYLAND...EAST CENTRAL OHIO... PENNSYLVANIA AND WEST VIRGINIA...INCLUDING THE FOLLOWING AREAS...IN WESTERN MARYLAND...GARRETT. IN EAST CENTRAL OHIO... BELMONT...CARROLL...COLUMBIANA...COSHOCTON...GUERNSEY... HARRISON...JEFFERSON OH...MONROE...MUSKINGUM...NOBLE AND TUSCARAWAS. IN PENNSYLVANIA...ALLEGHENY...ARMSTRONG...BEAVER... BUTLER...CLARION...FAYETTE...FAYETTE RIDGES...FOREST... GREENE...INDIANA...JEFFERSON PA...LAWRENCE...MERCER... VENANGO...WASHINGTON...WESTMORELAND AND WESTMORELAND RIDGES. IN WEST VIRGINIA...BROOKE...HANCOCK...MARION...MARSHALL... MONONGALIA...OHIO...PRESTON...TUCKER AND WETZEL. * FROM 2 PM EDT THIS AFTERNOON THROUGH SATURDAY EVENING * RAIN...MODERATE TO LOCALLY HEAVY AT TIMES...WILL SPREAD ACROSS THE REGION TODAY...PERSISTING THROUGH SATURDAY. RAINFALL OF 1 TO 2 INCHES IS POSSIBLE WITH LOCALLY HIGHER AMOUNTS. * THIS RAIN...IN COMBINATION WITH NEARLY SATURATED GROUND FROM RECENT RAINFALL...WILL CREATE THE POTENTIAL FOR RAPIDLY RISING WATER IN STREAMS AND CREEKS...AS WELL AS IN AREAS OF POOR DRAINAGE. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION. YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION SHOULD FLASH FLOOD WARNINGS BE ISSUED. && $$
998 WGUS61 KPBZ 221919 FFAPBZ FLOOD WATCH NATIONAL WEATHER SERVICE PITTSBURGH PA 319 PM EDT FRI APR 22 2011 MDZ001-OHZ039>041-048>050-057>059-068-069-PAZ007>009-013>016- 020>023-029-031-073>076-WVZ001>004-012-021>023-041-230400- /O.CON.KPBZ.FF.A.0002.000000T0000Z-110424T0000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ GARRETT-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-TUCKER- INCLUDING THE CITIES OF...OAKLAND MD...GRANTSVILLE... NEW PHILADELPHIA...DOVER...UHRICHSVILLE...CARROLLTON... EAST LIVERPOOL...SALEM...COLUMBIANA...EAST PALESTINE... WELLSVILLE...CALCUTTA...COSHOCTON...CADIZ...HOPEDALE... STEUBENVILLE...ZANESVILLE...CAMBRIDGE...MARTINS FERRY... ST. CLAIRSVILLE...BELLAIRE...BARNESVILLE...SHADYSIDE... BRIDGEPORT...CALDWELL...WOODSFIELD...SHARON...HERMITAGE... GROVE CITY...GREENVILLE...FARRELL...OIL CITY...FRANKLIN... SUGARCREEK...TIONESTA...NEW CASTLE...ELLWOOD CITY...BUTLER... ZELIENOPLE...CLARION...PUNXSUTAWNEY...BROOKVILLE... REYNOLDSVILLE...BROCKWAY...ALIQUIPPA...BEAVER FALLS...AMBRIDGE... MONACA...BEAVER...PITTSBURGH METRO AREA...KITTANNING... FORD CITY...LEECHBURG...FREEPORT...APOLLO...INDIANA... WASHINGTON...CANONSBURG...DONORA...CALIFORNIA...CHARLEROI... MONONGAHELA...MCMURRAY...WAYNESBURG...FAIRDALE...GREENSBURG... NEW KENSINGTON...JEANNETTE...LATROBE...MONESSEN...LIGONIER... DONEGAL...NEW FLORENCE...ACME...CHAMPION...UNIONTOWN... CONNELLSVILLE...POINT MARION...NORMALVILLE...FARMINGTON... OHIOPYLE...MARKLEYSBURG...TORONTO...WEIRTON...WHEELING... MOUNDSVILLE...NEW MARTINSVILLE...FAIRMONT...MORGANTOWN... KINGWOOD...TERRA ALTA...PARSONS...DAVIS...THOMAS 319 PM EDT FRI APR 22 2011 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH SATURDAY EVENING... THE FLASH FLOOD WATCH CONTINUES FOR * PORTIONS OF WESTERN MARYLAND...EAST CENTRAL OHIO... PENNSYLVANIA AND WEST VIRGINIA...INCLUDING THE FOLLOWING AREAS...IN WESTERN MARYLAND...GARRETT. IN EAST CENTRAL OHIO... BELMONT...CARROLL...COLUMBIANA...COSHOCTON...GUERNSEY... HARRISON...JEFFERSON OH...MONROE...MUSKINGUM...NOBLE AND TUSCARAWAS. IN PENNSYLVANIA...ALLEGHENY...ARMSTRONG...BEAVER... BUTLER...CLARION...FAYETTE...FAYETTE RIDGES...FOREST... GREENE...INDIANA...JEFFERSON PA...LAWRENCE...MERCER... VENANGO...WASHINGTON...WESTMORELAND AND WESTMORELAND RIDGES. IN WEST VIRGINIA...BROOKE...HANCOCK...MARION...MARSHALL... MONONGALIA...OHIO...PRESTON...TUCKER AND WETZEL. * THROUGH SATURDAY EVENING * RAIN...MODERATE TO LOCALLY HEAVY AT TIMES...WILL CONTINUE TONIGHT...PERSISTING THROUGH SATURDAY. RAINFALL OF 1 TO 2 INCHES IS POSSIBLE WITH LOCALLY HIGHER AMOUNTS. * THIS RAIN...IN COMBINATION WITH NEARLY SATURATED GROUND FROM RECENT RAINFALL...WILL CREATE THE POTENTIAL FOR RAPIDLY RISING WATER IN STREAMS AND CREEKS...AS WELL AS IN AREAS OF POOR DRAINAGE. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION. YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION SHOULD FLASH FLOOD WARNINGS BE ISSUED. && $$
743 WGUS61 KPBZ 230157 FFAPBZ FLOOD WATCH NATIONAL WEATHER SERVICE PITTSBURGH PA 957 PM EDT FRI APR 22 2011 MDZ001-OHZ039>041-048>050-057>059-068-069-PAZ007>009-013>016- 020>023-029-031-073>076-WVZ001>004-012-021>023-041-231000- /O.CON.KPBZ.FF.A.0002.000000T0000Z-110424T0000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ GARRETT-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-TUCKER- INCLUDING THE CITIES OF...OAKLAND MD...GRANTSVILLE... NEW PHILADELPHIA...DOVER...UHRICHSVILLE...CARROLLTON... EAST LIVERPOOL...SALEM...COLUMBIANA...EAST PALESTINE... WELLSVILLE...CALCUTTA...COSHOCTON...CADIZ...HOPEDALE... STEUBENVILLE...ZANESVILLE...CAMBRIDGE...MARTINS FERRY... ST. CLAIRSVILLE...BELLAIRE...BARNESVILLE...SHADYSIDE... BRIDGEPORT...CALDWELL...WOODSFIELD...SHARON...HERMITAGE... GROVE CITY...GREENVILLE...FARRELL...OIL CITY...FRANKLIN... SUGARCREEK...TIONESTA...NEW CASTLE...ELLWOOD CITY...BUTLER... ZELIENOPLE...CLARION...PUNXSUTAWNEY...BROOKVILLE... REYNOLDSVILLE...BROCKWAY...ALIQUIPPA...BEAVER FALLS...AMBRIDGE... MONACA...BEAVER...PITTSBURGH METRO AREA...KITTANNING... FORD CITY...LEECHBURG...FREEPORT...APOLLO...INDIANA... WASHINGTON...CANONSBURG...DONORA...CALIFORNIA...CHARLEROI... MONONGAHELA...MCMURRAY...WAYNESBURG...FAIRDALE...GREENSBURG... NEW KENSINGTON...JEANNETTE...LATROBE...MONESSEN...LIGONIER... DONEGAL...NEW FLORENCE...ACME...CHAMPION...UNIONTOWN... CONNELLSVILLE...POINT MARION...NORMALVILLE...FARMINGTON... OHIOPYLE...MARKLEYSBURG...TORONTO...WEIRTON...WHEELING... MOUNDSVILLE...NEW MARTINSVILLE...FAIRMONT...MORGANTOWN... KINGWOOD...TERRA ALTA...PARSONS...DAVIS...THOMAS 957 PM EDT FRI APR 22 2011 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH SATURDAY EVENING... THE FLASH FLOOD WATCH CONTINUES FOR * PORTIONS OF WESTERN MARYLAND...EAST CENTRAL OHIO... PENNSYLVANIA AND WEST VIRGINIA...INCLUDING THE FOLLOWING AREAS...IN WESTERN MARYLAND...GARRETT. IN EAST CENTRAL OHIO... BELMONT...CARROLL...COLUMBIANA...COSHOCTON...GUERNSEY... HARRISON...JEFFERSON OH...MONROE...MUSKINGUM...NOBLE AND TUSCARAWAS. IN PENNSYLVANIA...ALLEGHENY...ARMSTRONG...BEAVER... BUTLER...CLARION...FAYETTE...FAYETTE RIDGES...FOREST... GREENE...INDIANA...JEFFERSON PA...LAWRENCE...MERCER... VENANGO...WASHINGTON...WESTMORELAND AND WESTMORELAND RIDGES. IN WEST VIRGINIA...BROOKE...HANCOCK...MARION...MARSHALL... MONONGALIA...OHIO...PRESTON...TUCKER AND WETZEL. * THROUGH SATURDAY EVENING * RAIN...MODERATE TO LOCALLY HEAVY AT TIMES WILL CONTINUE TONIGHT AND PERSIST THROUGH SATURDAY. RAINFALL OF 1 TO 1.5 INCHES IS POSSIBLE WITH LOCALLY HIGHER AMOUNTS. * THIS RAIN IN COMBINATION WITH NEARLY SATURATED GROUND FROM RECENT RAINFALL WILL CREATE THE POTENTIAL FOR RAPIDLY RISING WATER IN STREAMS AND PONDING IN AREAS OF POOR DRAINAGE. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION. YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION SHOULD FLASH FLOOD WARNINGS BE ISSUED. && $$
104 WGUS61 KPBZ 230829 FFAPBZ FLOOD WATCH NATIONAL WEATHER SERVICE PITTSBURGH PA 429 AM EDT SAT APR 23 2011 MDZ001-OHZ039>041-048>050-057>059-068-069-PAZ007>009-013>016- 020>023-029-031-073>076-WVZ001>004-012-021>023-041-231630- /O.CON.KPBZ.FF.A.0002.000000T0000Z-110424T0000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ GARRETT-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-TUCKER- INCLUDING THE CITIES OF...OAKLAND MD...GRANTSVILLE... NEW PHILADELPHIA...DOVER...UHRICHSVILLE...CARROLLTON... EAST LIVERPOOL...SALEM...COLUMBIANA...EAST PALESTINE... WELLSVILLE...CALCUTTA...COSHOCTON...CADIZ...HOPEDALE... STEUBENVILLE...ZANESVILLE...CAMBRIDGE...MARTINS FERRY... ST. CLAIRSVILLE...BELLAIRE...BARNESVILLE...SHADYSIDE... BRIDGEPORT...CALDWELL...WOODSFIELD...SHARON...HERMITAGE... GROVE CITY...GREENVILLE...FARRELL...OIL CITY...FRANKLIN... SUGARCREEK...TIONESTA...NEW CASTLE...ELLWOOD CITY...BUTLER... ZELIENOPLE...CLARION...PUNXSUTAWNEY...BROOKVILLE... REYNOLDSVILLE...BROCKWAY...ALIQUIPPA...BEAVER FALLS...AMBRIDGE... MONACA...BEAVER...PITTSBURGH METRO AREA...KITTANNING... FORD CITY...LEECHBURG...FREEPORT...APOLLO...INDIANA... WASHINGTON...CANONSBURG...DONORA...CALIFORNIA...CHARLEROI... MONONGAHELA...MCMURRAY...WAYNESBURG...FAIRDALE...GREENSBURG... NEW KENSINGTON...JEANNETTE...LATROBE...MONESSEN...LIGONIER... DONEGAL...NEW FLORENCE...ACME...CHAMPION...UNIONTOWN... CONNELLSVILLE...POINT MARION...NORMALVILLE...FARMINGTON... OHIOPYLE...MARKLEYSBURG...TORONTO...WEIRTON...WHEELING... MOUNDSVILLE...NEW MARTINSVILLE...FAIRMONT...MORGANTOWN... KINGWOOD...TERRA ALTA...PARSONS...DAVIS...THOMAS 429 AM EDT SAT APR 23 2011 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH THIS EVENING... THE FLASH FLOOD WATCH CONTINUES FOR * PORTIONS OF WESTERN MARYLAND...EAST CENTRAL OHIO... PENNSYLVANIA AND WEST VIRGINIA...INCLUDING THE FOLLOWING AREAS...IN WESTERN MARYLAND...GARRETT. IN EAST CENTRAL OHIO... BELMONT...CARROLL...COLUMBIANA...COSHOCTON...GUERNSEY... HARRISON...JEFFERSON OH...MONROE...MUSKINGUM...NOBLE AND TUSCARAWAS. IN PENNSYLVANIA...ALLEGHENY...ARMSTRONG...BEAVER... BUTLER...CLARION...FAYETTE...FAYETTE RIDGES...FOREST... GREENE...INDIANA...JEFFERSON PA...LAWRENCE...MERCER... VENANGO...WASHINGTON...WESTMORELAND AND WESTMORELAND RIDGES. IN WEST VIRGINIA...BROOKE...HANCOCK...MARION...MARSHALL... MONONGALIA...OHIO...PRESTON...TUCKER AND WETZEL. * THROUGH THIS EVENING * RAIN...MODERATE TO LOCALLY HEAVY AT TIMES CAN BE EXPECTED TODAY. RAINFALL OF INCH OR MORE IS POSSIBLE WITH LOCALLY HIGHER AMOUNTS WHERE THUNDERSTORMS PERSIST. * THIS RAIN IN COMBINATION WITH NEARLY SATURATED GROUND FROM RECENT RAINFALL WILL CREATE THE POTENTIAL FOR RAPIDLY RISING WATER IN STREAMS AND PONDING IN AREAS OF POOR DRAINAGE. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION. YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION SHOULD FLASH FLOOD WARNINGS BE ISSUED. && $$
250 WGUS61 KPBZ 231902 FFAPBZ FLOOD WATCH NATIONAL WEATHER SERVICE PITTSBURGH PA 302 PM EDT SAT APR 23 2011 MDZ001-OHZ039>041-048>050-057>059-068-069-PAZ020-021-029-031- 073>076-WVZ001>004-012-021>023-041-240000- /O.CON.KPBZ.FF.A.0002.000000T0000Z-110424T0000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ GARRETT-TUSCARAWAS-CARROLL-COLUMBIANA-COSHOCTON-HARRISON- JEFFERSON OH-MUSKINGUM-GUERNSEY-BELMONT-NOBLE-MONROE-BEAVER- ALLEGHENY-WASHINGTON-GREENE-WESTMORELAND-WESTMORELAND RIDGES- FAYETTE-FAYETTE RIDGES-HANCOCK-BROOKE-OHIO-MARSHALL-WETZEL-MARION- MONONGALIA-PRESTON-TUCKER- INCLUDING THE CITIES OF...OAKLAND MD...GRANTSVILLE... NEW PHILADELPHIA...DOVER...UHRICHSVILLE...CARROLLTON... EAST LIVERPOOL...SALEM...COLUMBIANA...EAST PALESTINE... WELLSVILLE...CALCUTTA...COSHOCTON...CADIZ...HOPEDALE... STEUBENVILLE...ZANESVILLE...CAMBRIDGE...MARTINS FERRY... ST. CLAIRSVILLE...BELLAIRE...BARNESVILLE...SHADYSIDE... BRIDGEPORT...CALDWELL...WOODSFIELD...ALIQUIPPA...BEAVER FALLS... AMBRIDGE...MONACA...BEAVER...PITTSBURGH METRO AREA...WASHINGTON... CANONSBURG...DONORA...CALIFORNIA...CHARLEROI...MONONGAHELA... MCMURRAY...WAYNESBURG...FAIRDALE...GREENSBURG...NEW KENSINGTON... JEANNETTE...LATROBE...MONESSEN...LIGONIER...DONEGAL... NEW FLORENCE...ACME...CHAMPION...UNIONTOWN...CONNELLSVILLE... POINT MARION...NORMALVILLE...FARMINGTON...OHIOPYLE... MARKLEYSBURG...TORONTO...WEIRTON...WHEELING...MOUNDSVILLE... NEW MARTINSVILLE...FAIRMONT...MORGANTOWN...KINGWOOD... TERRA ALTA...PARSONS...DAVIS...THOMAS 302 PM EDT SAT APR 23 2011 ...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... THE FLASH FLOOD WATCH CONTINUES FOR * PORTIONS OF WESTERN MARYLAND...EAST CENTRAL OHIO...SOUTHWEST PENNSYLVANIA AND WEST VIRGINIA...INCLUDING THE FOLLOWING AREAS...IN WESTERN MARYLAND...GARRETT. IN EAST CENTRAL OHIO... BELMONT...CARROLL...COLUMBIANA...COSHOCTON...GUERNSEY... HARRISON...JEFFERSON OH...MONROE...MUSKINGUM...NOBLE AND TUSCARAWAS. IN SOUTHWEST PENNSYLVANIA...ALLEGHENY...BEAVER... FAYETTE...FAYETTE RIDGES...GREENE...WASHINGTON...WESTMORELAND AND WESTMORELAND RIDGES. IN WEST VIRGINIA...BROOKE...HANCOCK... MARION...MARSHALL...MONONGALIA...OHIO...PRESTON...TUCKER AND WETZEL. * UNTIL 8 PM EDT THIS EVENING * RAIN...MODERATE TO LOCALLY HEAVY AT TIMES IS POSSIBLE INTO THIS EVENING. RAINFALL OF INCH OR MORE IS POSSIBLE WITH LOCALLY HIGHER AMOUNTS WHERE THUNDERSTORMS PERSIST. * THIS RAIN...IN COMBINATION WITH NEARLY SATURATED GROUND FROM RECENT RAINFALL...WILL CREATE THE POTENTIAL FOR RAPIDLY RISING WATER IN STREAMS...AND PONDING IN AREAS OF POOR DRAINAGE. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION. YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION SHOULD FLASH FLOOD WARNINGS BE ISSUED. && $$
190 WGUS61 KPBZ 232344 FFAPBZ FLOOD WATCH NATIONAL WEATHER SERVICE PITTSBURGH PA 744 PM EDT SAT APR 23 2011 MDZ001-OHZ039>041-048>050-057>059-068-069-PAZ020-021-029-031- 073>076-WVZ001>004-012-021>023-041-240045- /O.CAN.KPBZ.FF.A.0002.000000T0000Z-110424T0000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ GARRETT-TUSCARAWAS-CARROLL-COLUMBIANA-COSHOCTON-HARRISON- JEFFERSON OH-MUSKINGUM-GUERNSEY-BELMONT-NOBLE-MONROE-BEAVER- ALLEGHENY-WASHINGTON-GREENE-WESTMORELAND-WESTMORELAND RIDGES- FAYETTE-FAYETTE RIDGES-HANCOCK-BROOKE-OHIO-MARSHALL-WETZEL-MARION- MONONGALIA-PRESTON-TUCKER- INCLUDING THE CITIES OF...OAKLAND MD...GRANTSVILLE... NEW PHILADELPHIA...DOVER...UHRICHSVILLE...CARROLLTON... EAST LIVERPOOL...SALEM...COLUMBIANA...EAST PALESTINE... WELLSVILLE...CALCUTTA...COSHOCTON...CADIZ...HOPEDALE... STEUBENVILLE...ZANESVILLE...CAMBRIDGE...MARTINS FERRY... ST. CLAIRSVILLE...BELLAIRE...BARNESVILLE...SHADYSIDE... BRIDGEPORT...CALDWELL...WOODSFIELD...ALIQUIPPA...BEAVER FALLS... AMBRIDGE...MONACA...BEAVER...PITTSBURGH METRO AREA...WASHINGTON... CANONSBURG...DONORA...CALIFORNIA...CHARLEROI...MONONGAHELA... MCMURRAY...WAYNESBURG...FAIRDALE...GREENSBURG...NEW KENSINGTON... JEANNETTE...LATROBE...MONESSEN...LIGONIER...DONEGAL... NEW FLORENCE...ACME...CHAMPION...UNIONTOWN...CONNELLSVILLE... POINT MARION...NORMALVILLE...FARMINGTON...OHIOPYLE... MARKLEYSBURG...TORONTO...WEIRTON...WHEELING...MOUNDSVILLE... NEW MARTINSVILLE...FAIRMONT...MORGANTOWN...KINGWOOD... TERRA ALTA...PARSONS...DAVIS...THOMAS 744 PM EDT SAT APR 23 2011 ...FLASH FLOOD WATCH IS CANCELLED... THE FLASH FLOOD WATCH FOR PORTIONS OF WESTERN MARYLAND...EAST CENTRAL OHIO...SOUTHWEST PENNSYLVANIA AND WEST VIRGINIA HAS BEEN CANCELLED. $$
What forecasters said that day
The local office's own words before this flash flood watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Pittsburgh, PA wrote its last area forecast discussion before this flash flood watch went out at Apr 21, 2:47 PM EDT, 8 minutes earlier.
Area forecast discussion, Apr 21, 2:47 PM EDT, 8 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PITTSBURGH PA
247 PM EDT THU APR 21 2011
.SYNOPSIS...
HIGH PRESSURE EXIT THE REGION TONIGHT. A FRONTAL BOUNDARY WILL
ENTER THE AREA FRIDAY...STALLING OVER THE REGION THROUGH THE
WEEKEND...BRINGING PERIODS OF MODERATE TO LOCALLY HEAVY RAINFALL.
&&
.NEAR TERM /THROUGH SATURDAY/...
SCATTERED TO BROKEN CUMULUS CLOUDS WILL PREVAIL INTO THIS EVENING
AS HIGH PRESSURE EXITS TO THE EAST. CLOUDS WILL INCREASE LATE THIS
EVENING/OVERNIGHT IN ADVANCE OF A FRONTAL BOUNDARY. THIS BOUNDARY
WILL APPROACH FROM THE SOUTH FRIDAY...WITH A SHIELD OF MODERATE
RAIN ENTERING AREAS FROM PIT SOUTH BY AFTN...SPREADING NORTH
FRIDAY NIGHT ACROSS ALL AREAS. RAINFALL EXCEEDING 2 INCHES IS
LIKELY...AND WITH SATURATED GROUND FROM THE ABOVE NORMAL
RAINFALL THE PAST FEW WEEKS...THINK POTENTIAL FOR AREAL/FLASH
FLOODING IS POSSIBLE. THUS...WILL ISSUE A FLASH FLOOD WATCH
BEGINNING 6 AM FRIDAY EXTENDING THROUGH SATURDAY AFTN. WITH THE
ATMOSPHERE RATHER STABLE THROUGH TOMORROW AFTN...WILL KEEP PRECIP
STRATIFORM. INSTABILITY WILL INCREASE AS THE BOUNDARY LIFTS NORTH
FRIDAY NIGHT AND SATURDAY...THUS WILL TRANSITION TO SHOWERS WITH
A CHANCE OF TSTMS. TEMPERATURES FRIDAY WILL BE HELD TO VERY COOL
LEVELS GIVEN WIDESPREAD PRECIPITATION IN THE COLDER SECTOR OF THE
SYSTEM...WITH HIGHS FRIDAY MAINLY IN THE 40S NORTH OF I-70...WITH
SOME LOWER/MID 50S SOUTH OF I-70 IN OHIO. TEMPERATURES WILL GRADUALLY
RISE FRIDAY NIGHT AS THE BOUNDARY LIFTS NORTH...WITH MUCH MILDER
60S TO LOWER 70S FOR HIGHS SATURDAY.
&&
.SHORT TERM /SATURDAY NIGHT THROUGH SUNDAY/...
STILL SOME QUESTION WHETHER THE BOUNDARY WILL PUSH BACK TO THE
SOUTH SATURDAY NIGHT/SUNDAY. NAM IS THE MOST AGGRESSIVE WITH
THIS...WITH GFS/ECMWF KEEPING THE BOUNDARY FURTHER TO THE NORTH
ACROSS THE UPPER OHIO VALLEY. WILL LEAN TOWARD THE ECMWF/GFS...WITH
GRADUALLY DECREASING POPS SATURDAY NIGHT/SUNDAY. WILL STAY CLOSE
TO GFS NUMBERS FOR TEMPERATURES SATURDAY NIGHT/SUNDAY.
&&
.LONG TERM /SUNDAY NIGHT THROUGH THURSDAY/...
WARM FRONT WILL REMAIN ACROSS THE AREA SUNDAY NIGHT AND SHOULD
FINALLY BEGIN TO LIFT NORTH ON MONDAY AND MONDAY NIGHT. THE RESPITE
FROM RAIN WILL BE BRIEF BEFORE A COLD FRONT APPROACHES FROM THE WEST
TUESDAY AFTERNOON. NEWEST MODEL RUNS ACTUALLY BEGIN TO SPIN A LOW
ALONG THE SOUTHERN END OF THE FRONT THAT MOVES FROM TEXAS TUESDAY
NIGHT TO THE GREAT LAKES WEDNESDAY NIGHT. ALL OF THIS WILL RESULT IN
ANOTHER EXTENDED PERIOD OF RAINFALL...WITH POSSIBLY DRYING BY
THURSDAY AFTERNOON. WITH THE AREA ON THE SOUTHERLY SIDE OF THE WARM
FRONT DURING THE PERIOD...TEMPERATURES SHOULD BE ABOVE NORMAL
THROUGHOUT THE EXTENDED FORECAST.
&&
.AVIATION /19Z THURSDAY THROUGH TUESDAY/...
DAYTIME CUMULUS AND WIND GUSTS SHOULD DIMINISH AT SUNSET. MID LEVEL
CLOUDS WILL BEGIN TO ADVANCE FROM THE SOUTHWEST IN ASSOCIATION WITH
A WARM FRONT THAT WILL REACH MOST TERMINALS BY DAYBREAK ON FRIDAY.
RAIN WILL THEN BE EXPECTED THROUGH THE REST OF THE TAF PERIOD.
CONDITIONS SHOULD REMAIN VFR FOR A FEW HOURS OF RAINFALL...GRADUALLY
DIMINISHING TO MVFR AND THEN IFR.
OUTLOOK...RAIN AND RESTRICTIONS CAN BE EXPECTED TO PERSIST ALL THE
WAY INTO MONDAY DUE TO FRONT REMAINING STATIONARY THROUGHOUT THE
WEEKEND THERE WILL ALSO BE A SLIGHT CHANCE OF THUNDERSTORMS FRIDAY
NIGHT AND SATURDAY. WARM FRONT SHOULD FINALLY ADVANCE NORTH OF THE
AREA MONDAY INTO MONDAY NIGHT...BEFORE A COLD FRONT APPROACHES LATE
TUESDAY.
&&
.HYDROLOGY...
WIDESPREAD...OCCASIONALLY HEAVY RAINFALL IS EXPECTED TO BEGIN BY
TOMORROW MORNING. BASIN AVERAGE RAINFALL IS FORECAST TO RANGE
FROM 0.75 TO 2.20 INCHES ACROSS THE COUNTY WARNING AREA FRIDAY
AND FRIDAY NIGHT. THE HEAVIEST RAINFALL AMOUNTS ARE FORECAST
ACROSS THE UPPER OHIO...CHEAT AND MONONGAHELA RIVER BASINS.
DISTRICT RIVERS ARE ALREADY HIGH AND WILL RISE SHARPLY IN RESPONSE
TO THE FORECAST RAINFALL. MANY LOCATIONS ARE FORECAST TO REACH ALERT
STAGES ON THE DISTRICT RIVERS...SOME LOCATIONS ARE EXPECTED TO REACH
OR EXCEED FLOOD STAGE BY THE BEGINNING OF NEXT WEEK.
A FLOOD ADVISORY REMAINS IN EFFECT FOR THE MONONGAHELA RIVER PARKING
WHARF THROUGH THE BEGINNING OF NEXT WEEK. FLOOD WATERS WILL RECEDE
OFF THE WHARF FRIDAY MORNING...THEN RISE ONCE AGAIN SATURDAY MORNING.
THE OHIO RIVER AT THE POINT IN PITTSBURGH IS FORECAST TO CREST AT
22.7 FEET SUNDAY MORNING.
FLOOD WARNINGS ARE IN EFFECT FOR THE MUSKINGUM RIVER AT COSHOCTON
AND WILLS CREEK AT CAMBRIDGE.
A RIVER FLOOD WATCH MAY BE ISSUED FRIDAY.
&&
.PBZ WATCHES/WARNINGS/ADVISORIES...
MD...FLASH FLOOD WATCH FROM FRIDAY MORNING THROUGH SATURDAY EVENING
FOR MDZ001.
OH...FLASH FLOOD WATCH FROM FRIDAY MORNING THROUGH SATURDAY EVENING
FOR OHZ039>041-048>050-057>059-068-069.
PA...FLASH FLOOD WATCH FROM FRIDAY MORNING THROUGH SATURDAY EVENING
FOR PAZ007>009-013>016-020>023-029-031-073>076.
WV...FLASH FLOOD WATCH FROM FRIDAY MORNING THROUGH SATURDAY EVENING
FOR WVZ001>004-012-021>023-041.
&&Hazardous weather outlook, Apr 21, 4:23 AM EDT, 10 hours 32 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE PITTSBURGH PA 423 AM EDT THU APR 21 2011 MDZ001-OHZ039-048-049-057>059-068-069-PAZ031-075-076-WVZ003-004-012- 021>023-041-220830- GARRETT-TUSCARAWAS-COSHOCTON-HARRISON-MUSKINGUM-GUERNSEY-BELMONT- NOBLE-MONROE-GREENE-FAYETTE-FAYETTE RIDGES-OHIO-MARSHALL-WETZEL- MARION-MONONGALIA-PRESTON-TUCKER- 423 AM EDT THU APR 21 2011 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. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY. RAINFALL, THAT IS EXPECTED FRIDAY THROUGH SUNDAY, MAY BE HEAVY ENOUGH TO CAUSE FLOODING. CONDITIONS WILL BE MONITORED AND A WATCH MAY BE NEEDED. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. OHZ040-041-050-PAZ007>009-013>016-020>023-029-073-074-WVZ001-002- 220830- CARROLL-COLUMBIANA-JEFFERSON OH-MERCER-VENANGO-FOREST-LAWRENCE- BUTLER-CLARION-JEFFERSON PA-BEAVER-ALLEGHENY-ARMSTRONG-INDIANA- WASHINGTON-WESTMORELAND-WESTMORELAND RIDGES-HANCOCK-BROOKE- 423 AM EDT THU APR 21 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL OHIO...NORTHWEST PENNSYLVANIA...SOUTHWEST PENNSYLVANIA...WEST CENTRAL PENNSYLVANIA AND NORTHERN PANHANDLE OF WEST VIRGINIA. .DAY ONE...TODAY AND TONIGHT. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY. 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.
The office that day
Everything else NWS Pittsburgh, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 21, 6:13 AM EDT | River Flood Warning | PBZ | Guernsey | 22 hr |
Nearby
Flash Flood Watches in Pennsylvania, 2011Flash Flood Watches in Ohio, 2011Flash Flood Watches in West Virginia, 2011Every flash flood watch in 2011
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.