Alert archive / Pennsylvania / Flash Flood Warnings in 2014

Flash Flood Warning 13, NWS State College, PA

July 27, 2014Cumberland County, Perry County, Pennsylvania

NWS State College, PA issued this flash flood warning at Jul 27, 2014, 5:21 PM EDT for Cumberland County, Perry County, Pennsylvania. It was in force for 3 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
Jul 27, 2014, 5:21 PM EDT (21:21 UTC)
Expired
Jul 27, 2014, 8:15 PM EDT
In force
3 hr
Issued by
NWS State College, PA
Area
Storm-based polygon
Flood severity
None

Counties Cumberland County, PA, Perry County, PA

The radar

The State College radar (KCCX), 96 km from the middle of the area, began a volume at 21:20 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

TimeReportWhereRemark
Jul 27, 7:00 PM EDTFLASH FLOOD3 Sse Landisburg, PAPORTION OF ROUTE 74 CLOSED DUE TO FLOODING IN SPRING TWP.

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, 9.4 hours before the alert went out and 147 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-pSkew-T log-p diagram, Washington/Dulle, VA at 12:00Z on 2014-07-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Washington/Dulle, VA at 12:00Z on 2014-07-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 163 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1449 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
163 m²/s²
0-3 km storm-relative helicity
209 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.

290 
WGUS51 KCTP 272121
FFWCTP
PAC041-099-280015-
/O.NEW.KCTP.FF.W.0013.140727T2121Z-140728T0015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE STATE COLLEGE PA
521 PM EDT SUN JUL 27 2014

THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHWESTERN CUMBERLAND COUNTY IN SOUTH CENTRAL PENNSYLVANIA...
  SOUTH CENTRAL PERRY COUNTY IN SOUTH CENTRAL PENNSYLVANIA...

* UNTIL 815 PM EDT
    
* AT 519 PM EDT...DOPPLER RADAR AND AUTOMATED RAIN GAUGES INDICATED 
  A THUNDERSTORM PRODUCING HEAVY RAINFALL...WITH OVER ONE AND A HALF 
  INCHES SO FAR...OVER NORTHWEST CUMBERLAND COUNTY. NEW STORMS WITH 
  TORRENTIAL RAINFALL RATES ARE DEVELOPING WEST OF THE ORIGINAL 
  NEARLY STATIONARY STORMS...CREATING AN EXTREMELY DANGEROUS    
  SITUATION. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  PLAINFIELD...SCHLUSSER...NEWVILLE AND BLOSERVILLE. 

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 4033 7723 4031 7719 4026 7717 4023 7717
      4017 7743 4024 7747

$$

DEVOIR
1 follow-up statement
389 
WGUS71 KCTP 272158
FFSCTP

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
558 PM EDT SUN JUL 27 2014

PAC041-099-280015-
/O.CON.KCTP.FF.W.0013.000000T0000Z-140728T0015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CUMBERLAND PA-PERRY PA-
558 PM EDT SUN JUL 27 2014

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 815 PM EDT FOR
NORTHWESTERN CUMBERLAND AND SOUTH CENTRAL PERRY COUNTIES...

AT 552 PM EDT...DOPPLER RADAR AND AUTOMATED RAIN GAUGES INDICATED 
THUNDERSTORMS CONTINUING TO PRODUCE HEAVY RAIN OVER PORTIONS THE 
WARNED AREA. RADAR ESTIMATES THAT OVER THREE INCHES OF RAIN HAVE 
FALLEN IN LESS THAN ONE HOUR AROUND THE BLOSERVILLE AREA. 

THE NEARLY STATIONARY STORMS FROM EARLIER ARE NOW LIFTING NORTHWARD 
INTO PERRY COUNTY. THEREFORE THE HEAVY RAIN WILL SUBSIDE OVER 
CUMBERLAND COUNTY FROM THIS STORM AFTER 600 PM. EXCESSIVE RUNOFF 
FROM THESE HEAVY RAINS WILL CONTINUE...AND ADDITIONAL STORMS WITH 
HEAVY RAIN MAY ARRIVE FROM THE WEST IN THE NEXT HOUR. THEREFORE... 
THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 815 PM EDT.
 
SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
PLAINFIELD...SCHLUSSER...NEWVILLE AND BLOSERVILLE. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PLEASE REPORT FLOODING TO YOUR LOCAL LAW ENFORCEMENT AGENCY WHEN YOU
CAN DO SO SAFELY.

&&

LAT...LON 4033 7723 4031 7719 4026 7717 4023 7717
      4017 7743 4024 7747

$$

DEVOIR

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 27, 5:04 PM EDTSevere Thunderstorm WarningCTPCumberland, Perry41 min
Jul 27, 5:09 PM EDTSevere Thunderstorm WarningCTPBlair, Huntingdon51 min
Jul 27, 5:33 PM EDTTornado WarningCTPHuntingdon11 min
Jul 27, 5:43 PM EDTSpecial Weather StatementCTPFranklin47 min
Jul 27, 5:47 PM EDTSevere Thunderstorm WarningCTPCumberland, Dauphin, Perry58 min
Jul 27, 6:27 PM EDTSpecial Weather StatementCTPBlair, Cambria, Clearfield48 min
Jul 27, 6:39 PM EDTSevere Thunderstorm WarningCTPCumberland, Dauphin, York51 min
Jul 27, 6:41 PM EDTSevere Thunderstorm WarningCTPBlair, Huntingdon32 min
Jul 27, 6:45 PM EDTSevere Thunderstorm WarningCTPBlair, Cambria, Centre, Huntingdon45 min
Jul 27, 7:00 PM EDTSevere Thunderstorm WarningCTPFranklin, Huntingdon, Juniata, Perry45 min
Jul 27, 7:07 PM EDTAreal Flood AdvisoryCTPDauphin, Lebanon, York3 hr
Jul 27, 7:11 PM EDTSevere Thunderstorm WarningCTPCentre, Huntingdon49 min
Jul 27, 7:21 PM EDTSevere Thunderstorm WarningCTPDauphin, Lancaster, Lebanon, York69 min
Jul 27, 7:26 PM EDTSevere Thunderstorm WarningCTPCentre, Huntingdon, Mifflin, Snyder49 min
Jul 27, 7:43 PM EDTSpecial Weather StatementCTPLancaster32 min
Jul 27, 7:50 PM EDTSevere Thunderstorm WarningCTPCumberland, Dauphin, Perry, York55 min
Jul 27, 7:51 PM EDTAreal Flood AdvisoryCTPCentre3 hr
Jul 27, 7:56 PM EDTSevere Thunderstorm WarningCTPLancaster, York79 min

Nearby

Flash Flood Warnings in Pennsylvania, 2014Every 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.