Alert archive / Pennsylvania / Flash Flood Warnings in 2014

Flash Flood Warning 2, NWS State College, PA

May 21, 2014Centre County, Clearfield County, Elk County, Pennsylvania

NWS State College, PA issued this flash flood warning at May 21, 2014, 5:25 AM EDT for Centre County, Clearfield County, Elk County, Pennsylvania. It was in force for 9 hr. 3 reports 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: May 21, 2014, 5:25 AM EDT (09:25 UTC)
Expired: May 21, 2014, 2:23 PM EDT
In force: 9 hr
Issued by: NWS State College, PA
Area: Storm-based polygon
Emergency: Flash flood emergency
Flood severity: None

Counties Centre County, PA, Clearfield County, PA, Elk County, PA

The radar

The State College radar (KCCX), 53 km from the middle of the area, began a volume at 09:28 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
May 21, 8:50 AM EDT	FLASH FLOOD	Madera, PA	SR 453 FLOODED JUST SOUTH OF MADERA
May 21, 10:16 AM EDT	FLASH FLOOD	4 Nw Penfield, PA	WATER RESCUE
May 21, 11:25 AM EDT	FLASH FLOOD	Penfield, PA	ELEMENTARY SCHOOL EVACUATED DUE TO FLOODING

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

The nearest sounding before it

Pittsburgh, PA (KAGC), launched 00:00Z, 9.4 hours before the alert went out and 152 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: 18 J/kg
Mixed-layer CIN: -79 J/kg
Mixed-layer LCL: 1477 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 137 m²/s²
0-3 km storm-relative helicity: 227 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.

858 
WGUS51 KCTP 210925
FFWCTP
PAC027-033-047-211215-
/O.NEW.KCTP.FF.W.0002.140521T0925Z-140521T1215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE STATE COLLEGE PA
525 AM EDT WED MAY 21 2014

THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTH CENTRAL ELK COUNTY IN NORTH CENTRAL PENNSYLVANIA...
  CLEARFIELD COUNTY IN CENTRAL PENNSYLVANIA...
  WEST CENTRAL CENTRE COUNTY IN CENTRAL PENNSYLVANIA...

* UNTIL 815 AM EDT
    
* AT 519 AM EDT...DOPPLER RADAR INDICATED A CLUSTER OF THUNDERSTORMS 
  THAT WERE PRODUCING HEAVY RAIN OVER MUCH OF CLEARFIELD COUNTY. 
  RAINFALL ESTIMATES ACROSS EASTERN CLEARFIELD COUNTY WERE MAINLY
  IN THE 1 TO 2 INCH RANGE...WITH ISOALTED AMOUNTS NEAR 3 INCHES. 
  ADDITIONAL STORMS FORMING TO THE WEST WILL MOVE ACROSS THE AREA. 
  FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY. 

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  CLEARFIELD...PHILIPSBURG...WOODLAND...CURWENSVILLE...PENFIELD...
  HYDE...OSCEOLA MILLS...PLYMPTONVILLE...ROCKTON...CHESTER HILL...
  KARTHAUS...HOUTZDALE...NORTH PHILIPSBURG...SOUTH PHILIPSBURG...
  SANDY RIDGE...FORCE...LECONTES MILLS...PARKER DAM STATE PARK...
  BROCKPORT AND JEFFRIES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE.

TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

&&

LAT...LON 4129 7874 4121 7814 4084 7803 4074 7862
      4120 7872 4121 7871 4123 7871 4123 7873

$$

MARTIN

4 follow-up statements

359 
WGUS71 KCTP 211138
FFSCTP

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
738 AM EDT WED MAY 21 2014

PAC027-033-047-211215-
/O.CON.KCTP.FF.W.0002.000000T0000Z-140521T1215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ELK PA-CLEARFIELD PA-CENTRE PA-
738 AM EDT WED MAY 21 2014

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 815 AM EDT FOR
SOUTH CENTRAL ELK...CLEARFIELD AND WEST CENTRAL CENTRE COUNTIES...

AT 735 AM EDT...DOPPLER RADAR INDICATED ANOTHER AREA OF HEAVY 
RAINFALL ENTERING THE WARNING AREA. UP TO TWO INCHES OF RAIN HAS 
ALREADY FALLEN...AND WITH THE ADDITIONAL RAINFALL THE LIKELIHOOD OF 
FLASH FLOODING CONTINUES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE.

TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

&&

LAT...LON 4129 7874 4121 7814 4084 7803 4074 7862
      4120 7872 4121 7871 4123 7871 4123 7873

$$

CR

999 
WGUS51 KCTP 211200
FFWCTP
PAC027-033-047-211615-
/O.EXT.KCTP.FF.W.0002.000000T0000Z-140521T1615Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE STATE COLLEGE PA
800 AM EDT WED MAY 21 2014

THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS EXTENDED THE

* FLASH FLOOD WARNING FOR...
  SOUTH CENTRAL ELK COUNTY IN NORTH CENTRAL PENNSYLVANIA...
  CLEARFIELD COUNTY IN CENTRAL PENNSYLVANIA...
  WEST CENTRAL CENTRE COUNTY IN CENTRAL PENNSYLVANIA...

* UNTIL 1215 PM EDT

* AT 758 AM EDT...DOPPLER RADAR INDICATED HEAVY RAIN CONTINUES 
  ACROSS THE WARNING AREA CAPABLE OF PRODUCING FLASH FLOODING.

ADDITIONAL RAINFALL AMOUNTS OF ONE TO TWO INCHES ARE POSSIBLE IN THE 
WARNED AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE.

TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

&&

LAT...LON 4129 7874 4121 7814 4084 7803 4074 7862
      4120 7872 4121 7871 4123 7871 4123 7873

$$

CR

456 
WGUS51 KCTP 211607
FFWCTP
PAC027-033-047-211915-
/O.EXT.KCTP.FF.W.0002.000000T0000Z-140521T1915Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE STATE COLLEGE PA
1207 PM EDT WED MAY 21 2014

THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS EXTENDED THE

* FLASH FLOOD WARNING FOR...
  SOUTH CENTRAL ELK COUNTY IN NORTH CENTRAL PENNSYLVANIA...
  CLEARFIELD COUNTY IN CENTRAL PENNSYLVANIA...
  WEST CENTRAL CENTRE COUNTY IN CENTRAL PENNSYLVANIA...

* UNTIL 315 PM EDT

* AT 1205 PM EDT...DOPPLER RADAR AND RAINFALL REPORTS OF OVER FOUR 
  INCHES OF RAIN HAS FALLEN ACROSS THE WARNING AREA. WHILE 
  ADDITIONAL RAINFALL TOTALS ARE EXPECTED TO BE LIGHT...ONGOING 
  FLASH FLOODING IS LIKELY FOR THE NEXT SEVERAL HOURS.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  CLEARFIELD...PHILIPSBURG...WOODLAND...CURWENSVILLE...PENFIELD...
  HYDE...OSCEOLA MILLS...PLYMPTONVILLE...ROCKTON...CHESTER HILL...
  KARTHAUS...HOUTZDALE...NORTH PHILIPSBURG...SOUTH PHILIPSBURG...
  SANDY RIDGE...FORCE...LECONTES MILLS...PARKER DAM STATE PARK...
  BROCKPORT AND JEFFRIES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

&&

LAT...LON 4129 7874 4121 7814 4084 7803 4074 7862
      4120 7872 4121 7871 4123 7871 4123 7873

$$

CR

816 
WGUS71 KCTP 211823
FFSCTP

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
223 PM EDT WED MAY 21 2014

PAC027-033-047-211829-
/O.CAN.KCTP.FF.W.0002.000000T0000Z-140521T1915Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ELK PA-CLEARFIELD PA-CENTRE PA-
223 PM EDT WED MAY 21 2014

...THE FLASH FLOOD WARNING FOR EXTREME SOUTH CENTRAL 
ELK...CLEARFIELD AND WEST CENTRAL CENTRE COUNTIES IS CANCELLED...

THE HEAVY RAIN HAS ENDED...AND FLOODING IS NO LONGER EXPECTED TO 
POSE A THREAT. 

A FLASH FLOOD WARNING CONTINUES FOR A LARGE PORTION OF ELK COUNTY 
INCLUDING A FLASH FLOOD EMERGENCY FOR THE RIDGWAY AREA. 

PLEASE CONTINUE TO HEED ALL ROAD CLOSURES AND ACTIVE WARNINGS.

LAT...LON 4129 7874 4121 7814 4084 7803 4074 7862
      4120 7872 4121 7871 4123 7871 4123 7873

$$

CR

The office that day

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

Issued	Product	Office	Counties	Lasted
May 21, 1:08 AM EDT	Special Weather Statement	CTP	McKean	52 min
May 21, 3:02 AM EDT	Areal Flood Advisory	CTP	Cameron, Centre, Clearfield, Elk, McKean, Potter and 1 more	3 hr
May 21, 3:12 AM EDT	Flash Flood Watch	CTP	Cameron, Clearfield, Elk, McKean, Potter, Warren	19 hr
May 21, 3:15 AM EDT	Special Weather Statement	CTP	Centre	60 min
May 21, 3:28 AM EDT	Flash Flood Warning Emergency	CTP	Cameron, Elk, McKean, Warren	13 hr
May 21, 4:31 AM EDT	Areal Flood Advisory	CTP	Blair, Centre, Clearfield, Huntingdon, Mifflin	3 hr
May 21, 7:06 AM EDT	River Flood Warning	CTP	Elk	17 hr
May 21, 7:22 AM EDT	Areal Flood Advisory	CTP	Blair, Cambria, Centre, Clearfield, Huntingdon	3 hr
May 21, 9:14 AM EDT	Areal Flood Advisory	CTP	Adams, Cameron, Centre, Clinton, Cumberland, Dauphin and 12 more	6 hr
May 21, 9:20 AM EDT	River Flood Warning	CTP	Elk	15 hr
May 21, 10:01 AM EDT	River Flood Warning	CTP	Warren	34 hr
May 21, 4:22 PM EDT	Areal Flood Warning	CTP	Elk	3 hr

Nearby

Flash Flood Warnings in Pennsylvania, 2014 Every flash flood warning in 2014

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.