Alert archive / Pennsylvania / Flash Flood Warnings in 2012

Flash Flood Warning 3, NWS State College, PA

May 26, 2012Columbia County, Schuylkill County, Pennsylvania

NWS State College, PA issued this flash flood warning at May 26, 2012, 5:35 PM EDT for Columbia County, Schuylkill County, Pennsylvania. It was in force for 85 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: May 26, 2012, 5:35 PM EDT (21:35 UTC)
Expired: May 26, 2012, 7:00 PM EDT
In force: 85 min
Issued by: NWS State College, PA
Area: Storm-based polygon
Flood severity: None

Counties Columbia County, PA, Schuylkill County, PA

The radar

The State College radar (KCCX), 151 km from the middle of the area, began a volume at 21:37 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

Washington/Dulle, VA (KIAD), launched 12:00Z, 9.6 hours before the alert went out and 234 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: 225 J/kg
Mixed-layer CIN: -140 J/kg
Mixed-layer LCL: 809 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 74 m²/s²
0-3 km storm-relative helicity: 75 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.

373 
WGUS51 KCTP 262135
FFWCTP
PAC037-107-262300-
/O.NEW.KCTP.FF.W.0003.120526T2135Z-120526T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE STATE COLLEGE PA
535 PM EDT SAT MAY 26 2012

THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHEASTERN COLUMBIA COUNTY...
  EASTERN SCHUYLKILL COUNTY...

* UNTIL 700 PM EDT...

* AT 526 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR A NEARLY 
  STATIONARY LINE OF THUNDERSTORMS...WITH THE POTENTIAL FOR FLASH
  FLOODING OVER EASTERN SCHUYLKILL AND SOUTHEASTERN COLUMBIA 
  COUNTIES. RADAR ESTIMATED RAINFALL FROM THESE THUNDERSTORMS WAS    
  BETWEEN 2 AND 3 INCHES OVER THE PAST HOUR. 

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO RINGTOWN   
  ASHLAND... FRACKVILLE...MAHANOY CITY...MINERSVILLE...POTTSVILLE...
  SCHUYLKILL HAVEN...SHENANDOAH...ST. CLAIR AND BERWICK.

ADDITIONAL RAINFALL AMOUNTS OF AROUND ONE INCH ARE LIKELY BETWEEN 
530 PM AND 7 PM THIS EVENING IN THE WARNED AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN HILLY TERRAIN THERE ARE HUNDREDS OF LOW WATER CROSSINGS WHICH ARE
POTENTIALLY DANGEROUS IN HEAVY RAIN. DO NOT ATTEMPT TO TRAVEL ACROSS
FLOODED ROADS. FIND ALTERNATE ROUTES. IT TAKES ONLY A FEW INCHES OF
SWIFTLY FLOWING WATER TO CARRY VEHICLES AWAY.

&&

LAT...LON 4066 7594 4057 7615 4067 7632 4081 7640
      4096 7644 4107 7636 4111 7628 4099 7621
      4096 7621 4092 7614 4077 7612

$$

FORECASTER: LAMBERT/ROSS

The office that day

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

Issued	Product	Office	Counties	Lasted
May 26, 1:16 PM EDT	Special Weather Statement	CTP	Clearfield	29 min
May 26, 1:41 PM EDT	Special Weather Statement	CTP	Centre	34 min
May 26, 1:46 PM EDT	Special Weather Statement	CTP	Clearfield	29 min
May 26, 2:11 PM EDT	Special Weather Statement	CTP	Northumberland, Snyder, Union	49 min
May 26, 2:17 PM EDT	Severe Thunderstorm Warning	CTP	Centre	58 min
May 26, 2:34 PM EDT	Special Weather Statement	CTP	Clearfield	56 min
May 26, 2:35 PM EDT	Special Weather Statement	CTP	Clearfield	55 min
May 26, 2:35 PM EDT	Severe Thunderstorm Warning	CTP	Juniata, Snyder, Union	55 min
May 26, 2:43 PM EDT	Special Weather Statement	CTP	Bedford	62 min
May 26, 2:53 PM EDT	Special Weather Statement	CTP	Schuylkill	52 min
May 26, 3:26 PM EDT	Areal Flood Advisory	CTP	Juniata, Snyder, Union	3 hr
May 26, 3:26 PM EDT	Areal Flood Advisory	CTP	Bedford, Somerset	2 hr
May 26, 3:37 PM EDT	Areal Flood Advisory	CTP	Schuylkill	3 hr
May 26, 3:43 PM EDT	Special Weather Statement	CTP	Columbia	32 min
May 26, 3:45 PM EDT	Severe Thunderstorm Warning	CTP	Schuylkill	60 min
May 26, 3:46 PM EDT	Areal Flood Advisory	CTP	Bedford, Blair, Huntingdon	119 min
May 26, 3:57 PM EDT	Flash Flood Warning	CTP	Schuylkill	3 hr
May 26, 4:05 PM EDT	Special Weather Statement	CTP	Blair	55 min
May 26, 4:07 PM EDT	Special Weather Statement	CTP	Lycoming	38 min
May 26, 4:12 PM EDT	Special Weather Statement	CTP	Huntingdon	63 min
May 26, 4:16 PM EDT	Areal Flood Advisory	CTP	Juniata, Perry	3 hr
May 26, 4:29 PM EDT	Special Weather Statement	CTP	Cambria	46 min
May 26, 4:45 PM EDT	Special Weather Statement	CTP	Blair, Cambria, Huntingdon, Perry	60 min
May 26, 4:46 PM EDT	Special Weather Statement	CTP	Columbia, Schuylkill	74 min
May 26, 5:28 PM EDT	Special Weather Statement	CTP	Cambria	47 min
May 26, 5:39 PM EDT	Areal Flood Advisory	CTP	Bedford, Blair, Cambria	111 min
May 26, 6:09 PM EDT	Special Weather Statement	CTP	Bedford	36 min
May 26, 6:44 PM EDT	Special Weather Statement	CTP	Bedford	46 min
May 26, 6:45 PM EDT	Special Weather Statement	CTP	Lancaster	75 min
May 26, 6:51 PM EDT	Special Weather Statement	CTP	Northumberland, Schuylkill	54 min
May 26, 7:06 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Fulton	39 min
May 26, 7:22 PM EDT	Special Weather Statement	CTP	Lancaster	53 min
May 26, 7:33 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster	57 min

Nearby

Flash Flood Warnings in Pennsylvania, 2012 Every flash flood warning in 2012

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.