Alert archive / Pennsylvania / Flash Flood Warnings in 2000

Flash Flood Warning 30, NWS State College, PA

August 2, 2000Columbia County, Pennsylvania

NWS State College, PA issued this flash flood warning at Aug 2, 2000, 5:14 PM EDT for Columbia 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
Aug 2, 2000, 5:14 PM EDT (21:14 UTC)
Expired
Aug 2, 2000, 8:15 PM EDT
In force
3 hr
Issued by
NWS State College, PA
Area
Whole counties

County Columbia County, PA

The radar

The Binghamton radar (KBGM), 133 km from the middle of the area, began a volume at 21:16 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

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 9.2 hours before the alert went out and 177 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, Phillips Aaf/Abe, MD at 12:00Z on 2000-08-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 361 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, Phillips Aaf/Abe, MD at 12:00Z on 2000-08-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -23 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
361 J/kg
Mixed-layer CIN
-68 J/kg
Mixed-layer LCL
945 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
-23 m²/s²
0-3 km storm-relative helicity
49 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.1

Open this sounding in Storm Lab

The text

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

000 
WGUS51 KCTP 022119
FFWCTP
PAC037-030015-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE STATE COLLEGE PA
514 PM EDT WED AUG 2 2000

THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  COLUMBIA COUNTY.

* UNTIL 815 PM EDT.

* AT 507 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  THUNDERSTORM WITH VERY HEAVY RAINFALL 12 MILES NORTH OF
  BLOOMSBURG...MOVING NORTHEAST AT 10 MPH.

SLOW MOVING THUNDERSTORMS ARE PRODUCING TORRENTIAL RAINFALL IN 
NORTHERN COLUMBIA COUNTY. DOPPLER RADAR ESTIMATES THAT OVER 1.5 
INCHES OF RAIN HAS FALLEN IN THE LAST HOUR.  THIS IS THE SAME AREA 
THAT RECEIVED 4 TO 5 INCHES OF RAIN OVER THE LAST 3 DAYS. RUNOFF 
FROM THIS EXCESSIVE RAINFALL WILL LIKELY CAUSE FLASH FLOODING ALONG 
AND NEAR LITTLE FISHING CREEK IN NORTHERN AND CENTRAL COLUMBIA 
COUNTY.

PERSONS LIVING NEAR ANY STREAMS OR CREEKS IN NORTHERN COLUMBIA 
COUNTY SHOULD PAY EXTRA ATTENTION TO RAPIDLY RISING WATERS.

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.

$$
ONDREJIK

LAT...LON 4120 7667 4093 7646 4108 7631 4127 7644

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 2, 1:51 PM EDTSevere Thunderstorm WarningCTPWarren69 min
Aug 2, 3:02 PM EDTSevere Thunderstorm WarningCTPMcKean, Warren58 min
Aug 2, 4:01 PM EDTSevere Thunderstorm WarningCTPPotter74 min
Aug 2, 4:07 PM EDTSevere Thunderstorm WarningCTPMcKean38 min
Aug 2, 4:38 PM EDTSevere Thunderstorm WarningCTPColumbia67 min
Aug 2, 4:51 PM EDTSevere Thunderstorm WarningCTPClearfield54 min
Aug 2, 5:37 PM EDTFlash Flood WarningCTPClearfield3 hr
Aug 2, 6:20 PM EDTSevere Thunderstorm WarningCTPClinton25 min
Aug 2, 6:41 PM EDTFlash Flood WarningCTPClinton3 hr
Aug 2, 6:44 PM EDTSevere Thunderstorm WarningCTPCentre61 min
Aug 2, 7:02 PM EDTSevere Thunderstorm WarningCTPLycoming58 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.