Alert archive / Pennsylvania / Flash Flood Warnings in 2002

Flash Flood Warning 4, NWS State College, PA

May 13, 2002Lycoming County, Sullivan County, Pennsylvania

NWS State College, PA issued this flash flood warning at May 13, 2002, 11:50 AM EDT for Lycoming County, Sullivan County, Pennsylvania. It was in force for 4 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
May 13, 2002, 11:50 AM EDT (15:50 UTC)
Expired
May 13, 2002, 3:45 PM EDT
In force
4 hr
Issued by
NWS State College, PA
Area
Whole counties

Counties Lycoming County, PA, Sullivan County, PA

The radar

The Binghamton radar (KBGM), 112 km from the middle of the area, began a volume at 15:49 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 12:00Z, 3.8 hours before the alert went out and 232 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 12:00Z on 2002-05-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2 joules per kilogram.LCLEL10008507005003002001001 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 12:00Z on 2002-05-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 213 square meters per square second.1939587897Sfc1 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
2 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
397 m above ground
0-6 km bulk shear
56 kt
0-1 km storm-relative helicity
213 m²/s²
0-3 km storm-relative helicity
283 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.

000 
WGUS51 KCTP 131550
FFWCTP
PAC081-113-131945-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE STATE COLLEGE PA
1140 AM EDT MON MAY 13 2002

THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SULLIVAN COUNTY IN PENNSYLVANIA
  LYCOMING COUNTY IN PENNSYLVANIA

* UNTIL 345 PM EDT.

* AT 1133 AM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED AN 
AREA OF MODERATE TO HEAVY RAIN OVER THE REGION.

RAINFALL RATES OF ONE TO TWO INCHES PER HOUR THROUGH EARLY THIS 
AFTERNOON ON TOP OF YESTERDAYS RAINFALL WILL PRODUCE EXCESSIVE 
RUNOFF AND WILL CAUSE FLASH FLOODING NEAR WILLIAMSPORT...MUNCY... 
PICTURE ROCKS...MUNCY VALLEY...BARBOURS...LAPORTE...RICKETS GLEN 
STATE PARK AND LINCOLN FALLS.

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.

SMALL CREEKS AND STREAMS WILL RAPIDLY FLOOD...POSSIBLY WASHING OUT
ROADS AND FLOODING NEARBY LOW AREAS.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS
IMMINENT. NEVER ATTEMPT TO CROSS HIGH WATER IN A VEHICLE OR ON FOOT

$$

LAT...LON 4151 7628 4121 7664 4113 7716 4150 7753

SD/BL

The office that day

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

IssuedProductOfficeCountiesLasted
May 13, 4:36 PM EDTSevere Thunderstorm WarningCTPLancaster24 min
May 13, 7:45 PM EDTSevere Thunderstorm WarningCTPLancaster, York60 min
May 13, 7:49 PM EDTSevere Thunderstorm WarningCTPAdams56 min

Nearby

Flash Flood Warnings in Pennsylvania, 2002Every flash flood warning in 2002

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.