Alert archive / Pennsylvania / Flash Flood Warnings in 2009

Flash Flood Warning 30, NWS State College, PA

August 11, 2009Adams County, Pennsylvania

NWS State College, PA issued this flash flood warning at Aug 11, 2009, 5:01 PM EDT for Adams County, Pennsylvania. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Aug 11, 2009, 5:01 PM EDT (21:01 UTC)
Expired: Aug 11, 2009, 8:00 PM EDT
In force: 3 hr
Issued by: NWS State College, PA
Area: Storm-based polygon
Flood severity: None

County Adams County, PA

The radar

The Sterling radar (KLWX), 104 km from the middle of the area, began a volume at 21:04 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this flash flood warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 9.0 hours before the alert went out and 99 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 93 J/kg
Mixed-layer CIN: -161 J/kg
Mixed-layer LCL: 1076 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: -52 m²/s²
0-3 km storm-relative helicity: 27 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WGUS51 KCTP 112101
FFWCTP
PAC001-120000-
/O.NEW.KCTP.FF.W.0030.090811T2101Z-090812T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE STATE COLLEGE PA
501 PM EDT TUE AUG 11 2009

THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CENTRAL ADAMS COUNTY...

* UNTIL 800 PM EDT...

* AT 456 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR ESTIMATES   
BETWEEN 2 AND 3 INCHES OF RAIN HAS FALLEN OVER CENTRAL ADAMS 
COUNTY...MAINLY BETWEEN CASHTOWN AND ARENDTSVILLE. ADDITIONAL 
SHOWERS AND THUNDERSTORMS ARE FORMING WEST OF THIS AREA...AND WILL 
GIVE THE REGION ADDTIONAL RAIN OVER THE NEXT HOUR.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO 
CASHTOWN...ARENDTSVILLE...SEVEN STARS...NEW OXFORD AND GETTYSBURG.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. NEVER ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR IN AN
AUTOMOBILE. TURN AROUND DONT DROWN

&&

LAT...LON 3978 7736 3997 7738 3998 7701 3990 7699
      3988 7699 3987 7698 3979 7700

$$

FORECASTER: JUNG

1 follow-up statement

000 
WGUS71 KCTP 112137
FFSCTP

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
537 PM EDT TUE AUG 11 2009

PAC001-120000-
/O.CON.KCTP.FF.W.0030.000000T0000Z-090812T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ADAMS PA-
537 PM EDT TUE AUG 11 2009

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 800 PM EDT FOR
CENTRAL ADAMS COUNTY...

AT 530 PM EDT...DOPPLER RADAR CONTINUES TO SHOW SHOWERS AND 
THUNDERSTORMS REFORMING OVER WEST-CENTRAL ADAMS COUNTY...TRACKING TO 
THE EAST. RADAR ESTIMATES THAT BETWEEN 2 AND THREE INCHES OF 
RAIN HAS FALLEN IN THE LAST TWO HOURS BETWEEN CASHTOWN AND 
ARENDTSVILLE...WITH MORE RAIN ON THE WAY. FLOODING IS IMMINENT 
ESPECIALLY NEAR AREAS ALONG MUMMASBURG RUN...MARSH CREEK...ROCK 
CREEK AND MUSKRAT RUN. WHILE THIS REGION HAS BEEN HARDEST 
HIT...ADDITIONAL FLASH FLOODING IS EXPECTED OVER ADDITIONAL AREAS IN 
CENTRAL ADAMS COUNTY.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
BONNEAUVILLE...CASHTOWN...GETTYSBURG...HEIDLERSBURG...LAKE MEADE...
MCSHERRYSTOWN...NEW OXFORD AND SEVEN STARS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.

&&

LAT...LON 3978 7736 3997 7738 3998 7701 3990 7699
      3988 7699 3987 7698 3979 7700

$$

FORECASTER: JUNG

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS State College, PA wrote its last area forecast discussion before this flash flood warning went out at Aug 11, 3:47 PM EDT, 1 hour 14 minutes earlier.

Area forecast discussion, Aug 11, 3:47 PM EDT, 1 hour 14 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE STATE COLLEGE PA
347 PM EDT TUE AUG 11 2009

.SYNOPSIS...
A COLD FRONT WILL PUSH THROUGH PENNSYLVANIA THIS EVENING...THEN
STALL ALONG THE EAST COAST FOR THE REST OF THE WEEK. MEANWHILE...
A RIDGE OF HIGH PRESSURE WILL WORK INTO THE NORTHWEST PART OF THE
STATE. A CUT OFF UPPER LOW OVER THE SOUTHERN APPALACHIANS WILL
LIKELY LIFT NORTHEAST TOWARD PENNSYLVANIA BY NEXT WEEKEND.
THIS FEATURE WILL KEEP SOME CHC OF SHOWERS AND STORMS ALONG
THE MARYLAND BORDER INTO EARLY NEXT WEEK.

&&

.NEAR TERM /UNTIL 6 PM THIS EVENING/...
SFC COLD FRONT LOCATED NEAR A KELM TO KPBZ LINE CURRENTLY WITH A
BAND OF MODERATE TO HEAVY RAIN AND SOME EMBEDDED THUNDER. SO FAR
NO SIGNS OF BOWING. FORWARD MOTION OF LINE WAS INITIALLY SLOW...
BUT IS PICKING UP SOME FORWARD SPEED AS THE BOUNDARY LAYER FLOW
INCREASES TO 10-15 KNOTS AS PER NAM/GFS.

MORNING STRATUS AND FOG HAS GIVEN WAY TO HAZY SUNSHINE IN MOST
AREAS WITH MEAN CAPES GROWING INTO THE MODERATE RANGE. LACK OF
SHEAR WOULD APPEAR TO PRECLUDE SEVERE...BUT GIVEN THESE CAPES AND
WATER LOADING FROM 1.75+ PWS...CANNOT RULE OUT ISOLATED SEVERE
FROM A BOWING LINE SEGMENT OR COLLAPSING CORE...PARTICULARLY OVER
MY SOUTHEAST WHICH SHOULD FEATURE THE HIGHEST CAPES AND LAPSE
RATES THIS AFTERNOON AND EVENING IN A BUILDING 925-850 MB THETA-E
RIDGE...AS PER RUC13.

WENT WITH HIGH CHANCE/LOW LIKELY POPS AS THE FRONT SAGS
SOUTHEASTWARD THIS EVENING...AND GENERAL BROADBRUSH OF LOW TO MID
CHANCE POPS AS THE REAL COOLING ALOFT ASSOCIATED WITH THE 500 MB
TROF APPROACH OVERNIGHT TAKES PLACE.

DRIER/CO0LER WX SHOULD GRADUALLY FILTER INTO THE REGION FROM THE
WEST LATER TONIGHT.

&&

.SHORT TERM /6 PM THIS EVENING THROUGH WEDNESDAY NIGHT/...
AS SHORTWAVE ROTATES THRU THE REGION ON WED...STILL ENOUGH LL
MOISTURE/INSTABILITY LIKELY TO REMAIN ACROSS THE AREA TO SUPPORT
SOME CHC OF MAINLY AFTN CONVECTION.

&&

.LONG TERM /THURSDAY THROUGH TUESDAY/...
MODELS SLIGHTLY DIFFERENT EACH DAY WITH REGARD TO CUTOFF LOW.
GIVEN TIME OF YEAR...LOCATION OF MTS...HARD TO SEE FRONT GOING
VERY FAR TO THE SOUTH AND EAST. THUS WITH HINTS OF A CUTOFF
OVER PA OR NEARBY...THINK THERE WILL BE A SLIGHT CHC TO CHC OF
SHOWERS AND STORMS ACROSS THE REGION...MAINLY SOUTH OF INTERSTATE
80 EARLY ON...BUT ALL AREAS BY LATER NEXT MONDAY INTO TUE...AS
NEXT COLD FRONT NEARS THE EAST COAST.

TEMPS WILL BE CLOSE TO NORMAL. DID EDGE TEMPS DOWN A DEGREE
OR SO DURING THE DAY...AND EDGE UP A DEGREE OR SO AT NIGHT...
AS I AM LEANING ON THE WET AND CLDY SIDE OF THINGS.

&&

.AVIATION /20Z TUESDAY THROUGH SUNDAY/...
SCATTERED SHOWERS/TSTORMS WILL CROSS THE REGION THIS AFTERNOON AND
EVENING...WITH MVFR RESTRICTIONS NEAR TSRA AND HEAVY DOWNPOURS.

INVERSION WILL TRAP LOW LEVEL MOISTURE LATER TONIGH AND SPREAD
MVFR/LIFR CIGS/VSBYS TO ALL BUT KMDT OVERNIGHT. ADDITIONAL SCATTERED
SHOWERS/TSTORMS IN STORE FOR WED AFT...MAINLY IN SE HALF.

OUTLOOK...
WED...LIFR/MVFR EARLY IN FOG...THEN VFR WITH MVFR IN SCT TSTORMS.
THU-FRI-SAT-SUN...VFR. ISOLD AFTN MVFR SHOWERS/TSTORMS MAINLY SE.

&&

.HYDROLOGY...
BEEN WATCHING CELLS ACROSS NW PA. SO FAR THINGS ARE MOVING...FEW
SPOTS MAY HAVE SEEN ABOUT AN INCH OF RAIN SO FAR...ESTIMATED
BY RADAR. WOULD EXPECT CELLS TO CONTINUE TO MOVE EAST AT
10 TO 15 MPH. FLOOD ADVISORY EARLIER...NOW A FLASH FLOOD
WARNING. WILL CONTINUE TO MONITOR...AND ISSUE PRODUCTS AS
NEEDED. AWAY FROM THIS NW AREA...FFG NOT SO LOW...THUS
FLOODING SHOULD NOT BE A PROBLEM OUTSIDE THE FAR NW.

&&

.CTP WATCHES/WARNINGS/ADVISORIES...
NONE.

&&

SYNOPSIS...DEVOIR
NEAR TERM...DEVOIR
SHORT TERM...MARTIN
LONG TERM...MARTIN
AVIATION...DEVOIR/RXR
HYDROLOGY...MARTIN/DEVOIR/JUNG

Hazardous weather outlook, Aug 11, 12:53 PM EDT, 4 hours 8 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE STATE COLLEGE PA
1253 PM EDT TUE AUG 11 2009

PAZ004>006-010>012-017>019-024>028-033-034-037-041-042-045-046-
049>053-056>058-121700-
WARREN-MCKEAN-POTTER-ELK-CAMERON-NORTHERN CLINTON-CLEARFIELD-
NORTHERN CENTRE-SOUTHERN CENTRE-CAMBRIA-BLAIR-HUNTINGDON-MIFFLIN-
JUNIATA-SOMERSET-BEDFORD-TIOGA-NORTHERN LYCOMING-SULLIVAN-
SOUTHERN CLINTON-SOUTHERN LYCOMING-UNION-SNYDER-MONTOUR-
NORTHUMBERLAND-COLUMBIA-PERRY-DAUPHIN-SCHUYLKILL-
1253 PM EDT TUE AUG 11 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL PENNSYLVANIA.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON AS A
WEAK COLD FRONT ACTS ON VERY MOIST AND SOMEWHAT UNSTABLE AIR OVER
THE REGION. SLOW MOVING STORMS WILL POSE A GREATER THREAT OF
LOCALLY HEAVY RAINFALL OVER SOME AREAS...ESPECIALLY WHERE CELLS
TRAIN OR TRACK OVER AREAS WHICH SAW HEAVY RAINFALL ON MONDAY.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

PAZ035-036-059-063>066-121700-
FULTON-FRANKLIN-LEBANON-CUMBERLAND-ADAMS-YORK-LANCASTER-
1253 PM EDT TUE AUG 11 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL PENNSYLVANIA.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

A SLOW MOVING COLD FRONT WILL PUSH ACROSS THE AREA THIS EVENING.
SHOWERS AND SCATTERED THUNDERSTORMS WILL ACCOMPANY THE WEAK FRONT...
AND MAY PRODUCE LOCALLY HEAVY DOWNPOURS AND SOME ISOLATED STRONG
WIND GUSTS. LOCAL MINOR FLOODING IS A POSSIBILITY WITH STRONGER
SLOW MOVING STORMS.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

DEVOIR

In the hours before

Special weather statement, Aug 11, 3:10 PM EDT, 1 hour 51 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
310 PM EDT TUE AUG 11 2009

PAZ004-005-111945-
MCKEAN PA-WARREN PA-
310 PM EDT TUE AUG 11 2009

...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN WARREN AND
NORTHWESTERN MCKEAN COUNTIES...

AT 311 PM EDT...A STRONG THUNDERSTORM WAS LOCATED 9 MILES NORTHEAST
OF WARREN...MOVING SOUTHEAST AT 15 MPH.

WIND GUSTS TO 40 MPH AND HAIL UP TO DIME SIZE ARE POSSIBLE WITH THIS
STORM.

THIS STORM WILL BE NEAR SCANDIA AROUND 320 PM AND KINZUA DAM AROUND
335 PM.

THIS WILL IMPACT THE FOLLOWING MAJOR ROADS...ROUTE 62...STATE ROAD
59.

LAT...LON 4198 7867 4171 7890 4192 7921 4200 7915
      4201 7880

EXPERIMENTAL

FORECASTER: JUNG

Special weather statement, Aug 11, 3:28 PM EDT, 1 hour 33 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
328 PM EDT TUE AUG 11 2009

PAZ010-017-112030-
CLEARFIELD PA-ELK PA-
328 PM EDT TUE AUG 11 2009

...A STRONG THUNDERSTORM WILL AFFECT NORTHWESTERN CLEARFIELD AND
SOUTH CENTRAL ELK COUNTIES...

AT 327 PM EDT...A STRONG THUNDERSTORM WAS LOCATED 9 MILES EAST OF
BROOKVILLE...MOVING SOUTHEAST AT 20 MPH.

WIND GUSTS TO 40 MPH ARE POSSIBLE WITH THIS STORM. VERY HEAVY RAIN
WILL FALL FROM THIS STORM...AND WILL CAUSE WATER TO POND ON ROADS AND
FILL POOR DRAINAGE AREAS. THE RAIN WILL CAUSE RAPID RISES ON SMALL
STREAMS AND CREEKS.

THIS STORM WILL BE NEAR BROCKPORT AROUND 350 PM...DUBOIS AROUND 400
PM...ROCKTON AROUND 410 PM...S.B. ELLIOT STATE PARK AROUND 420 PM AND
HYDE AROUND 430 PM.

THIS WILL IMPACT I-80 BETWEEN MILE MARKERS 97 AND 118.

THIS WILL ALSO IMPACT THE FOLLOWING MAJOR ROADS...ROUTE 119...ROUTE
219...ROUTE 322...STATE ROAD 153...STATE ROAD 255.

LAT...LON 4119 7879 4121 7877 4121 7872 4122 7872
      4123 7875 4127 7875 4129 7880 4131 7878
      4123 7831 4090 7848 4104 7881 4114 7881

EXPERIMENTAL

FORECASTER: DEVOIR

Special weather statement, Aug 11, 4:27 PM EDT, 34 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
427 PM EDT TUE AUG 11 2009

PAZ017-112100-
CLEARFIELD PA-
427 PM EDT TUE AUG 11 2009

...STRONG THUNDERSTORMS WILL AFFECT SOUTHERN CLEARFIELD COUNTY...

AT 425 PM EDT...STRONG THUNDERSTORMS WERE ALONG A LINE FROM
CLEARFIELD TO 11 MILES SOUTHEAST OF PUNXSUTAWNEY...MOVING SOUTHEAST
AT 25 MPH.

WIND GUSTS TO 40 MPH ARE POSSIBLE WITH THESE STORMS.

THESE STORMS WILL BE NEAR WOODLAND AROUND 435 PM...NEW WASHINGTON
AROUND 440 PM...WALLACETON AROUND 445 PM...IRVONA AROUND 455 PM AND
BRISBIN AROUND 500 PM.

THIS WILL IMPACT I-80 BETWEEN MILE MARKERS 116 AND 129.

THIS WILL ALSO IMPACT THE FOLLOWING MAJOR ROADS...ROUTE 219...ROUTE
322.

LAT...LON 4093 7881 4107 7846 4095 7810 4094 7813
      4096 7814 4095 7815 4096 7817 4095 7816
      4091 7822 4088 7823 4088 7825 4085 7825
      4086 7829 4082 7831 4074 7839 4072 7859
      4080 7882

EXPERIMENTAL

FORECASTER: JUNG

Special weather statement, Aug 11, 4:56 PM EDT, 5 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
456 PM EDT TUE AUG 11 2009

PAZ065-112130-
YORK PA-
456 PM EDT TUE AUG 11 2009

...STRONG THUNDERSTORMS WILL AFFECT SOUTHERN YORK COUNTY...

AT 453 PM EDT...STRONG THUNDERSTORMS WERE ALONG A LINE FROM 7 MILES
SOUTH OF WEIGELSTOWN TO 5 MILES EAST OF PARKVILLE...MOVING EAST AT 30
MPH.

WIND GUSTS TO 40 MPH AND SMALL HAIL ARE POSSIBLE WITH THESE STORMS.
ALSO...VERY HEAVY RAIN WILL FALL FROM THESE STORMS...AND WILL CAUSE
WATER TO POND ON ROADS AND FILL POOR DRAINAGE AREAS. THE RAIN WILL
CAUSE RAPID RISES ON SMALL STREAMS AND CREEKS.

THESE STORMS WILL BE NEAR NEW SALEM...AND CODORUS AROUND 500 PM...
SEVEN VALLEYS AROUND 505 PM...JACOBUS...SPRY...LOGANVILLE...AND GLEN
ROCK AROUND 510 PM...DALLASTOWN...SHREWSBURY AND NEW FREEDOM AROUND
515 PM.

THIS WILL IMPACT I-83 BETWEEN MILE MARKERS 1 AND 14.

THIS WILL ALSO IMPACT ROUTE 30.

LAT...LON 3997 7692 3986 7640 3972 7640 3972 7676
      3971 7676 3971 7684

EXPERIMENTAL

FORECASTER: GARTNER/JUNG/MARTIN

The office that day

Everything else NWS State College, PA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 11, 12:42 PM EDT	Areal Flood Advisory	CTP	McKean, Warren	3 hr
Aug 11, 3:08 PM EDT	Flash Flood Warning	CTP	McKean, Warren	3 hr
Aug 11, 3:10 PM EDT	Special Weather Statement	CTP	Warren	35 min
Aug 11, 3:28 PM EDT	Special Weather Statement	CTP	Clearfield	62 min
Aug 11, 4:21 PM EDT	Severe Thunderstorm Warning	CTP	Adams, York	54 min
Aug 11, 4:27 PM EDT	Special Weather Statement	CTP	Clearfield	33 min
Aug 11, 4:40 PM EDT	Areal Flood Advisory	CTP	Adams, York	110 min
Aug 11, 4:56 PM EDT	Special Weather Statement	CTP	York	34 min
Aug 11, 5:05 PM EDT	Areal Flood Advisory	CTP	Columbia, Lycoming, McKean, Potter, Sullivan, Tioga	3 hr
Aug 11, 5:08 PM EDT	Special Weather Statement	CTP	Cambria	37 min
Aug 11, 5:11 PM EDT	Special Weather Statement	CTP	Sullivan	64 min
Aug 11, 5:26 PM EDT	Special Weather Statement	CTP	York	34 min
Aug 11, 6:37 PM EDT	Special Weather Statement	CTP	Union	53 min
Aug 11, 6:46 PM EDT	Special Weather Statement	CTP	Bedford	29 min
Aug 11, 7:28 PM EDT	Special Weather Statement	CTP	Schuylkill	32 min
Aug 11, 7:49 PM EDT	Special Weather Statement	CTP	Schuylkill	41 min

Nearby

Flash Flood Warnings in Pennsylvania, 2009 Every flash flood warning in 2009

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.