Alert archive / Pennsylvania / Flash Flood Warnings in 2001

Flash Flood Warning 28, NWS State College, PA

July 1, 2001Cambria County, Pennsylvania

NWS State College, PA issued this flash flood warning at Jul 1, 2001, 3:14 PM EDT for Cambria 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 counties it named.

The facts

Issued: Jul 1, 2001, 3:14 PM EDT (19:14 UTC)
Expired: Jul 1, 2001, 6:15 PM EDT
In force: 3 hr
Issued by: NWS State College, PA
Area: Whole counties

County Cambria County, PA

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 7.2 hours before the alert went out and 118 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: 963 J/kg
Mixed-layer CIN: -33 J/kg
Mixed-layer LCL: 881 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 97 m²/s²
0-3 km storm-relative helicity: 115 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.6

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WGUS51 KCTP 011920
FFWCTP

PAC021-012215-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE STATE COLLEGE PA
314 PM EDT SUN JUL 1 2001

THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CAMBRIA COUNTY IN PENNSYLVANIA

* UNTIL 615 PM EDT.

* AT 310 PM...A SPOTTER FROM SOUTHWEST CAMBRIA COUNTY REPORTED A 3 
INCHES OF RAIN OVER THE PAST 45 MINUTES FROM SEVERAL THUNDERSTORMS.

REPEAT SLOW MOVING THUNDERSTORMS WILL CONTINUE THROUGH 430 PM...AND 
PRODUCE TORRENTIAL RAINFALL OF 1 TO 2 INCHES PER HOUR IN THE WARNED 
AREA. 

RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING 
OF STREAMS AND POOR DRAINAGE AREAS THROUGHOUT THE CITY OF JOHNSTOWN 
AND SURROUNDING LOCATIONS. ROADS AND BRIDGES MAY BE WASHED OUT FROM 
RAPIDLY FLOODING STREAMS.

THE GREATEST THREAT FOR FLASH FLOODING WILL BE ACROSS SOUTHERN 
CAMBRIA COUNTY.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED. MOVE TO
HIGHER GROUND. 

$$

LAMBERT

LAT...LON 4055 7869 4059 7884 4050 7890 4032 7904
          4023 7886 4025 7868 4035 7858 4036 7857
          4046 7857

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 30, 8:15 PM EDT	Severe Thunderstorm Warning	CTP	Columbia	45 min
Jul 1, 11:51 AM EDT	Severe Thunderstorm Warning	CTP	Tioga	54 min
Jul 1, 12:33 PM EDT	Severe Thunderstorm Warning	CTP	Elk	57 min
Jul 1, 12:42 PM EDT	Severe Thunderstorm Warning	CTP	Clinton, Potter	63 min
Jul 1, 1:20 PM EDT	Severe Thunderstorm Warning	CTP	Lycoming	55 min
Jul 1, 1:36 PM EDT	Severe Thunderstorm Warning	CTP	Clearfield	54 min
Jul 1, 1:53 PM EDT	Severe Thunderstorm Warning	CTP	Clinton	67 min
Jul 1, 2:00 PM EDT	Severe Thunderstorm Warning	CTP	Cambria	60 min
Jul 1, 2:09 PM EDT	Severe Thunderstorm Warning	CTP	Centre	66 min
Jul 1, 2:13 PM EDT	Severe Thunderstorm Warning	CTP	Lycoming, Sullivan	62 min
Jul 1, 2:57 PM EDT	Severe Thunderstorm Warning	CTP	Somerset	63 min
Jul 1, 3:02 PM EDT	Severe Thunderstorm Warning	CTP	Columbia	58 min
Jul 1, 3:14 PM EDT	Severe Thunderstorm Warning	CTP	Juniata, Perry	61 min
Jul 1, 3:28 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Huntingdon	62 min
Jul 1, 3:53 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin	67 min
Jul 1, 3:58 PM EDT	Severe Thunderstorm Warning	CTP	Cumberland, Franklin	62 min
Jul 1, 4:08 PM EDT	Severe Thunderstorm Warning	CTP	Lebanon	37 min
Jul 1, 4:32 PM EDT	Severe Thunderstorm Warning	CTP	Adams, York	73 min
Jul 1, 4:37 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster	68 min

Nearby

Flash Flood Warnings in Pennsylvania, 2001 Every flash flood warning in 2001

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.