Alert archive / Pennsylvania / Flash Flood Warnings in 2011

Flash Flood Warning 29, NWS State College, PA

June 11, 20114 counties in Pennsylvania

NWS State College, PA issued this flash flood warning at Jun 11, 2011, 6:41 PM EDT for 4 counties in Pennsylvania. It was in force for 5 hr. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jun 11, 2011, 6:41 PM EDT (22:41 UTC)
Expired: Jun 11, 2011, 11:14 PM EDT
In force: 5 hr
Issued by: NWS State College, PA
Area: Storm-based polygon
Flood severity: None

Counties Dauphin County, PA, Lebanon County, PA, Northumberland County, PA, Schuylkill County, PA

The radar

The State College radar (KCCX), 123 km from the middle of the area, began a volume at 22:44 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.

What was reported inside it

Time	Report	Where	Remark
Jun 11, 7:23 PM EDT	FLASH FLOOD	Jonestown, PA	FLOODED HOUSE IN JONESTOWN BOROUGH

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 10.7 hours before the alert went out and 186 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: 175 J/kg
Mixed-layer CIN: -275 J/kg
Mixed-layer LCL: 1552 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: 89 m²/s²
0-3 km storm-relative helicity: 153 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

534 
WGUS51 KCTP 112241
FFWCTP
PAC043-075-097-107-120230-
/O.NEW.KCTP.FF.W.0029.110611T2241Z-110612T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE STATE COLLEGE PA
641 PM EDT SAT JUN 11 2011

THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHERN DAUPHIN COUNTY...
  NORTHERN LEBANON COUNTY...
  SOUTHWESTERN SCHUYLKILL COUNTY...
  SOUTHERN NORTHUMBERLAND COUNTY...

* UNTIL 1030 PM EDT...

* AT 634 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR ESTIMATES
  AND RAIN GAGE REPORTS INDICATED VERY HEAVY RAIN FROM THUNDERSTORMS
  OVER NORTHERN DAUPHIN...NORTHERN LEBANON...SOUTHERN 
  NORTHUMBERLAND  AND SOUTHWESTERN SCHUYLKILL COUNTIES. RADAR
  ESTIMATED RAINFALL OF AROUND 1.5 INCHES HAS OCCURRED OVER THE PAST 
  HOUR...AND SIMILAR ADDITIONAL HEAVY RAINFALL IS POSSIBLE THIS
  EVENING IN THE WARNED AREA. 

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO            
  LINGLESTOWN....BERRYSBURG...URBAN...PILLOW...LYKENS...
  ELIZABETHVILLE...TOWER CITY...PINE GROVE AND JONESTOWN.

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 DON'T DROWN!

&&

LAT...LON 4040 7635 4036 7640 4031 7689 4033 7689
      4048 7684 4062 7695 4066 7692 4066 7690
      4067 7689 4071 7680 4078 7638 4052 7631
      4049 7643 4041 7630

$$

FORECASTER: LAMBERT/KREKELER

4 follow-up statements

642 
WGUS71 KCTP 112340
FFSCTP

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
740 PM EDT SAT JUN 11 2011

PAC043-075-097-107-120230-
/O.CON.KCTP.FF.W.0029.000000T0000Z-110612T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
DAUPHIN PA-LEBANON PA-SCHUYLKILL PA-NORTHUMBERLAND PA-
740 PM EDT SAT JUN 11 2011

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1030 PM EDT FOR
SOUTHERN NORTHUMBERLAND...SOUTHWESTERN SCHUYLKILL...NORTHERN LEBANON
AND NORTHERN DAUPHIN COUNTIES...

AT 730 PM EDT...DOPPLER RADAR ESTIMATES AND RAIN GAGE REPORTS 
CONTINUE TO INDICATE HEAVY RAINFALL PRODUCING FLASH FLOODING OVER 
NORTHERN DAUPHIN...NORTHERN LEBANON...SOUTHERN NORTHUMBERLAND AND 
SOUTHWESTERN SCHUYLKILL COUNTIES. 

IN LEBANON COUNTY WATERSHEDS PRONE TO FLOODING INCLUDE AIRES 
RUN...SWATARA CREEK...REEDS CREEK...QUREG RUN...INDIANTOWN RUN AND 
ELIZABETH RUN.  FLOODING HAS BEEN REPORTED IN THE JONESTOWN AREA.

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 4040 7635 4036 7640 4031 7689 4033 7689
      4048 7684 4062 7695 4066 7692 4066 7690
      4067 7689 4071 7680 4078 7638 4052 7631
      4049 7643 4041 7630

$$

FORECASTER: CHR

553 
WGUS51 KCTP 120244
FFWCTP
PAC043-075-097-107-120430-
/O.EXT.KCTP.FF.W.0029.000000T0000Z-110612T0430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE STATE COLLEGE PA
1044 PM EDT SAT JUN 11 2011

THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS EXTENDED THE

* FLASH FLOOD WARNING FOR...
  NORTHERN DAUPHIN COUNTY...
  NORTHERN LEBANON COUNTY...
  SOUTHWESTERN SCHUYLKILL COUNTY...
  SOUTHERN NORTHUMBERLAND COUNTY...

* UNTIL 1230 AM EDT...

* AT 1038 PM EDT...FLASH FLOODING WAS REPORTED FROM A THUNDERSTORM
  OVER NORTHERN DAUPHIN...NORTHERN LEBANON...SOUTHERN NORTHUMBERLAND
  AND SOUTHWESTERN SCHUYLKILL COUNTIES.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  LINGLESTOWN.


LAT...LON 4040 7635 4036 7640 4031 7689 4033 7689
      4048 7684 4062 7695 4066 7692 4066 7690
      4067 7689 4071 7680 4078 7638 4052 7631
      4049 7643 4041 7630

$$

FORECASTER: CHR

600 
WGUS51 KCTP 120250 CCA
FFWCTP
PAC043-075-097-107-120430-
/O.COR.KCTP.FF.W.0029.000000T0000Z-110612T0430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING...CORRECTED
NATIONAL WEATHER SERVICE STATE COLLEGE PA
1044 PM EDT SAT JUN 11 2011

THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS EXTENDED THE

* FLASH FLOOD WARNING FOR...
  NORTHERN DAUPHIN COUNTY...
  NORTHERN LEBANON COUNTY...
  SOUTHWESTERN SCHUYLKILL COUNTY...
  SOUTHERN NORTHUMBERLAND COUNTY...

* UNTIL 1230 AM EDT...

* AT 1038 PM EDT...FLASH FLOODING WAS REPORTED FROM THUNDERSTORMS
  OVER NORTHERN DAUPHIN...NORTHERN LEBANON...SOUTHERN
  NORTHUMBERLAND AND SOUTHWESTERN SCHUYLKILL COUNTIES.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  LINGLESTOWN.

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 DON'T DROWN!


LAT...LON 4040 7635 4036 7640 4031 7689 4033 7689
      4048 7684 4062 7695 4066 7692 4066 7690
      4067 7689 4071 7680 4078 7638 4052 7631
      4049 7643 4041 7630

$$

FORECASTER: CHR

265 
WGUS71 KCTP 120314
FFSCTP

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
1114 PM EDT SAT JUN 11 2011

PAC043-075-097-107-120323-
/O.CAN.KCTP.FF.W.0029.000000T0000Z-110612T0430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
DAUPHIN PA-LEBANON PA-SCHUYLKILL PA-NORTHUMBERLAND PA-
1114 PM EDT SAT JUN 11 2011

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR SOUTHERN
NORTHUMBERLAND...SOUTHWESTERN SCHUYLKILL...NORTHERN LEBANON AND
NORTHERN DAUPHIN COUNTIES...

THE WATERS FROM THE EARLIER HEAVY RAINS ARE RECEDING AND FLOOD WATERS
NO LONGER POSE A THREAT TO LIFE OR PROPERTY. THEREFORE...THE FLASH
FLOOD WARNING HAS BEEN CANCELLED.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO LINGLESTOWN.

LAT...LON 4040 7635 4036 7640 4031 7689 4033 7689
      4048 7684 4062 7695 4066 7692 4066 7690
      4067 7689 4071 7680 4078 7638 4052 7631
      4049 7643 4041 7630

$$

FORECASTER: CHR

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 11, 1:14 AM EDT	Special Weather Statement	CTP	Huntingdon	31 min
Jun 11, 2:39 AM EDT	Special Weather Statement	CTP	Lebanon	36 min
Jun 11, 3:22 AM EDT	Areal Flood Advisory	CTP	Centre, Clearfield	3 hr
Jun 11, 3:31 AM EDT	Areal Flood Advisory	CTP	Dauphin, Lancaster, Lebanon, Perry, Schuylkill	3 hr
Jun 11, 4:33 AM EDT	Special Weather Statement	CTP	Dauphin, Lebanon	42 min
Jun 11, 5:46 AM EDT	Special Weather Statement	CTP	Columbia, Lancaster, Lebanon, Montour, Northumberland, Schuylkill	44 min
Jun 11, 6:44 AM EDT	River Flood Warning	CTP	Dauphin, Lebanon, Schuylkill	8 hr
Jun 11, 6:44 AM EDT	River Flood Warning	CTP	Dauphin, Lebanon	8 hr
Jun 11, 10:46 AM EDT	Flash Flood Watch	CTP	Adams, Cumberland, Dauphin, Lancaster, Lebanon, Perry and 2 more	13 hr
Jun 11, 3:51 PM EDT	Special Weather Statement	CTP	Blair	54 min
Jun 11, 4:31 PM EDT	Special Weather Statement	CTP	Huntingdon	59 min
Jun 11, 4:37 PM EDT	Special Weather Statement	CTP	Clearfield	68 min
Jun 11, 4:42 PM EDT	Special Weather Statement	CTP	Huntingdon, Mifflin	63 min
Jun 11, 5:36 PM EDT	Special Weather Statement	CTP	Franklin	54 min
Jun 11, 5:46 PM EDT	Special Weather Statement	CTP	Fulton	44 min
Jun 11, 6:02 PM EDT	Special Weather Statement	CTP	Sullivan	43 min
Jun 11, 6:28 PM EDT	Special Weather Statement	CTP	Huntingdon	62 min
Jun 11, 6:44 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin, Lebanon	61 min
Jun 11, 6:53 PM EDT	Special Weather Statement	CTP	Lycoming	22 min
Jun 11, 6:58 PM EDT	Tornado Warning	CTP	Lebanon	47 min
Jun 11, 7:07 PM EDT	Special Weather Statement	CTP	Tioga	23 min
Jun 11, 7:15 PM EDT	Tornado Warning	CTP	Dauphin, Lebanon	45 min
Jun 11, 7:42 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin, Lancaster, Lebanon, York	63 min
Jun 11, 7:42 PM EDT	Tornado Warning	CTP	Lancaster, Lebanon	48 min
Jun 11, 7:49 PM EDT	Tornado Warning	CTP	Lancaster, Lebanon	41 min
Jun 11, 7:52 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster, York	68 min
Jun 11, 7:53 PM EDT	Flash Flood Warning	CTP	Lancaster, Lebanon	3 hr
Jun 11, 7:56 PM EDT	Tornado Warning	CTP	Lancaster, York	49 min

Nearby

Flash Flood Warnings in Pennsylvania, 2011 Every flash flood warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.