Alert archive / Pennsylvania / Flash Flood Warnings in 2016

Flash Flood Warning 3, NWS State College, PA

July 9, 2016Warren County, Pennsylvania

NWS State College, PA issued this flash flood warning at Jul 9, 2016, 12:36 AM EDT for Warren 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
Jul 9, 2016, 12:36 AM EDT (04:36 UTC)
Expired
Jul 9, 2016, 3:30 AM EDT
In force
3 hr
Issued by
NWS State College, PA
Area
Storm-based polygon
Flood severity
None

County Warren County, PA

The radar

The Buffalo radar (KBUF), 138 km from the middle of the area, began a volume at 04:36 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

Buffalo Intl Airport, NY (KBUF), launched 00:00Z, 4.6 hours before the alert went out and 137 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, Buffalo Intl Airport, NY at 00:00Z on 2016-07-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 88 joules per kilogram.LCLLFCEL10008507005003002001001 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, Buffalo Intl Airport, NY at 00:00Z on 2016-07-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -19 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
88 J/kg
Mixed-layer CIN
-133 J/kg
Mixed-layer LCL
1357 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
-19 m²/s²
0-3 km storm-relative helicity
-15 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

362 
WGUS51 KCTP 090436
FFWCTP
PAC123-090730-
/O.NEW.KCTP.FF.W.0003.160709T0436Z-160709T0730Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE STATE COLLEGE PA
1236 AM EDT SAT JUL 9 2016

THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CENTRAL WARREN COUNTY IN NORTH CENTRAL PENNSYLVANIA...

* UNTIL 330 AM EDT.

* AT 1233 AM EDT...DOPPLER RADAR INDICATED TRAINING THUNDERSTORMS
  PRODUCING HEAVY RAIN ACROSS THE WARNED AREA. BETWEEN 3 AND 3.5
  INCHES OF RAIN HAS ALREADY FALLEN OVER THE PAST SEVERAL HOURS.
  FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  WARREN...WARREN SOUTH...YOUNGSVILLE...SPRING CREEK...KINZUA DAM...
  GARLAND...CHAPMAN STATE PARK...STARBRICK AND CLARENDON.

ADDITIONAL RAINFALL AMOUNTS OF 1 TO 1.5 INCHES ARE LIKELY OVER THE
NEXT HOUR IN THE WARNED AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.

FLOODING IS OCCURRING OR IS IMMINENT. IT IS IMPORTANT TO KNOW WHERE
YOU ARE RELATIVE TO STREAMS...RIVERS...OR CREEKS WHICH CAN BECOME
KILLERS IN HEAVY RAINS. CAMPERS AND HIKERS SHOULD AVOID STREAMS OR
CREEKS.

&&

LAT...LON 4173 7957 4188 7956 4189 7897 4173 7899

$$

LAMBERT/DEVOIR/RXR/CERU
1 follow-up statement
376 
WGUS71 KCTP 090607
FFSCTP

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
207 AM EDT SAT JUL 9 2016

PAC123-090730-
/O.CON.KCTP.FF.W.0003.000000T0000Z-160709T0730Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WARREN PA-
207 AM EDT SAT JUL 9 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 330 AM EDT FOR
CENTRAL WARREN COUNTY...

AT 158 AM EDT...DOPPLER RADAR AND SPOTTERS INDICATED THAT VERY HEAVY
RAIN OF 4 TO 5 INCHES HAS FALLEN OVER THE PAST 5 HOURS ACROSS THE
WARNED AREA. FLOODING WAS OCCURRING ALONG DUNNS EDDY ROAD SOUTH OF
YOUNGSVILLE. AN ADDITIONAL AREA OF HEAVY SHOWERS AND A FEW
THUNDERSTORMS WILL BRING ANOTHER ONE HALF OF AN INCH...TO ONE INCH
OF RAIN BETWEEN 2 AM AND 3 AM...WHICH COULD WORSEN THE FLOODING
ALREADY OCCURRING.   

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
WARREN...WARREN SOUTH...YOUNGSVILLE...SPRING CREEK...KINZUA DAM...
GARLAND...CHAPMAN STATE PARK...STARBRICK AND CLARENDON.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.

FLOODING IS OCCURRING OR IS IMMINENT. IT IS IMPORTANT TO KNOW WHERE
YOU ARE RELATIVE TO STREAMS...RIVERS...OR CREEKS WHICH CAN BECOME
KILLERS IN HEAVY RAINS. CAMPERS AND HIKERS SHOULD AVOID STREAMS OR
CREEKS.

&&

LAT...LON 4173 7957 4188 7956 4189 7897 4173 7899

$$

LAMBERT/DEVOIR/CERU

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 8, 9:56 PM EDTSpecial Weather StatementCTPElk, Warren79 min
Jul 8, 11:17 PM EDTSpecial Weather StatementCTPMcKean, Warren73 min
Jul 9, 12:12 AM EDTAreal Flood AdvisoryCTPWarren3 hr
Jul 9, 1:00 AM EDTSpecial Weather StatementCTPPotter60 min
Jul 9, 1:25 AM EDTSpecial Weather StatementCTPWarren80 min
Jul 9, 6:50 PM EDTSpecial Weather StatementCTPSchuylkill25 min
Jul 9, 7:29 PM EDTSpecial Weather StatementCTPSchuylkill31 min

Nearby

Flash Flood Warnings in Pennsylvania, 2016Every flash flood warning in 2016

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.