Alert archive / Pennsylvania / Flash Flood Warnings in 2016

Flash Flood Warning 1, NWS Cleveland, OH

July 28, 2016Crawford County, Pennsylvania

NWS Cleveland, OH issued this flash flood warning at Jul 28, 2016, 3:36 PM EDT for Crawford 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 28, 2016, 3:36 PM EDT (19:36 UTC)
Expired
Jul 28, 2016, 6:30 PM EDT
In force
3 hr
Issued by
NWS Cleveland, OH
Area
Storm-based polygon
Flood severity
None

County Crawford County, PA

The radar

The Pittsburgh radar (KPBZ), 118 km from the middle of the area, began a volume at 19:36 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

Pittsburgh, PA (KAGC), launched 12:00Z, 7.6 hours before the alert went out and 130 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, Pittsburgh, PA at 12:00Z on 2016-07-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 305 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, Pittsburgh, PA at 12:00Z on 2016-07-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 52 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
305 J/kg
Mixed-layer CIN
-61 J/kg
Mixed-layer LCL
1169 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
52 m²/s²
0-3 km storm-relative helicity
94 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.1

Open this sounding in Storm Lab

The text

As transmitted.

416 
WGUS51 KCLE 281936
FFWCLE
PAC039-282230-
/O.NEW.KCLE.FF.W.0001.160728T1936Z-160728T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CLEVELAND OH
336 PM EDT THU JUL 28 2016

THE NATIONAL WEATHER SERVICE IN CLEVELAND HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHWESTERN CRAWFORD COUNTY IN NORTHWESTERN PENNSYLVANIA...

* UNTIL 630 PM EDT

* AT 332 PM EDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
  HEAVY RAIN ACROSS THE WARNED AREA. UP TO TWO INCHES OF RAIN HAVE
  ALREADY FALLEN NEAR COCHRANTON. THE STORMS HAS BEEN NEARLY
  STATIONARY OVER LAST HOUR WITH LITTLE MOVEMENT EXPECTED. RAPID
  RUNOFF CAN OCCUR QUICKLY IN THESE SITUATIONS. FLASH FLOODING IS
  EXPECTED TO BEGIN SHORTLY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4157 7989 4153 7995 4152 7995 4151 7998
      4149 8000 4148 8034 4176 8035 4173 7984
      4160 7983

$$

JAMISON
2 follow-up statements
053 
WGUS71 KCLE 282020
FFSCLE

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
420 PM EDT THU JUL 28 2016

PAC039-282230-
/O.CON.KCLE.FF.W.0001.000000T0000Z-160728T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CRAWFORD PA-
420 PM EDT THU JUL 28 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 630 PM EDT FOR
SOUTHWESTERN CRAWFORD COUNTY...

AT 418 PM EDT...HEAVY RAIN HAS DRIFTED OUT OF THE WARNED AREA. UP TO
THREE INCHES OF RAIN HAS FALLEN FROM THESE STORMS. FLASH FLOODING IS
STILL POSSIBLE AS THE RUNOFF CAUSES AREA STREAMS AND CREEKS
TO FLOOD. THE HEAVIEST RAIN FELL IN COCHRANTON. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4157 7989 4153 7995 4152 7995 4151 7998
      4149 8000 4148 8034 4176 8035 4173 7984
      4160 7983

$$

JAMISON
618 
WGUS71 KCLE 282109
FFSCLE

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
509 PM EDT THU JUL 28 2016

PAC039-282118-
/O.CAN.KCLE.FF.W.0001.000000T0000Z-160728T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CRAWFORD PA-
509 PM EDT THU JUL 28 2016

...THE FLASH FLOOD WARNING FOR SOUTHWESTERN CRAWFORD COUNTY IS
CANCELLED...

THE HEAVY RAIN HAS ENDED. FLOODING IS NO LONGER EXPECTED TO POSE A
THREAT. PLEASE CONTINUE TO HEED ANY REMAINING ROAD CLOSURES.

LAT...LON 4157 7989 4153 7995 4152 7995 4151 7998
      4149 8000 4148 8034 4176 8035 4173 7984
      4160 7983

$$

BRAY

The office that day

Everything else NWS Cleveland, OH issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 28, 3:23 PM EDTAreal Flood AdvisoryCLECrawford2 hr

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.