Alert archive / Pennsylvania / Flash Flood Warnings in 2000

Flash Flood Warning 39, NWS State College, PA

August 27, 2000Adams County, Cumberland County, Pennsylvania

NWS State College, PA issued this flash flood warning at Aug 27, 2000, 9:33 PM EDT for Adams County, Cumberland County, Pennsylvania. It was in force for 117 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Aug 27, 2000, 9:33 PM EDT (01:33 UTC)
Expired
Aug 27, 2000, 11:30 PM EDT
In force
117 min
Issued by
NWS State College, PA
Area
Whole counties

Counties Adams County, PA, Cumberland County, PA

The radar

The Sterling radar (KLWX), 118 km from the middle of the area, began a volume at 01:33 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

Washington/Dulle, VA (KIAD), launched 00:00Z, 1.6 hours before the alert went out and 120 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 00:00Z on 2000-08-28Temperature 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 00:00Z on 2000-08-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 21 square meters per square second.193958Sfc1 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
880 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
21 m²/s²
0-3 km storm-relative helicity
62 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 280139
FFWCTP
PAC001-041-280330-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE STATE COLLEGE PA
933 PM EDT SUN AUG 27 2000

THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CUMBERLAND COUNTY.
  ADAMS COUNTY.

* UNTIL 1130 PM EDT.

* AT 930 PM EDT...FLOODING WAS REPORTED ACROSS NORTHERN ADAMS   
  COUNTY...AND SOUTHERN CUMBERLAND COUNTY.

  IN NORTHERN ADAMS COUNTY...IN MENALLEN TOWNSHIP...FLOODING WAS
  REPORTED. FLOODING WAS REPORTED ALONG GREEN MOUNTAIN ROAD...MEYERS 
  ROAD...AND CREEKVIEW ROAD IN CUMBERLAND COUNTY. 

  ADDITIONAL FLOODING WILL BE POSSIBLE...MAINLY SOUTH OF INTERSTATE
  81...AND NORTH OF GETTYSBURG...AS MORE BANDS OF HEAVY STORMS MOVE
  WESTWARD.  

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.

$$

LAT...LON 4025 7715 3987 7714 3985 7745 4017 7746

&

MARTIN

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 27, 8:59 PM EDTSevere Thunderstorm WarningCTPCumberland, Dauphin, York61 min
Aug 27, 8:59 PM EDTSevere Thunderstorm WarningCTPLebanon61 min
Aug 27, 9:12 PM EDTSevere Thunderstorm WarningCTPPerry93 min
Aug 27, 10:05 PM EDTSevere Thunderstorm WarningCTPJuniata, Snyder40 min
Aug 27, 10:18 PM EDTSevere Thunderstorm WarningCTPMifflin, Union42 min
Aug 27, 11:02 PM EDTSevere Thunderstorm WarningCTPCentre58 min

Nearby

Flash Flood Warnings in Pennsylvania, 2000Every flash flood warning in 2000

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.