Flash Flood Warning 51, NWS State College, PA

Issued

Nov 8, 1997, 5:22 AM EST (10:22 UTC)

Expired

Nov 8, 1997, 9:00 AM EST

In force

4 hr

Issued by

NWS State College, PA

Area

Whole counties

County Lancaster County, PA

The Dover AFB radar (KDOX), 152 km from the middle of the area, began a volume at 10:23 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.

000 
TTAA00 KCTP 081025
FFWCTP
PAC071-081400-
 
BULLETIN - EAS ACTIVATION REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE STATE COLLEGE PA
522 AM EST SAT NOV 8 1997
 
THE NATIONAL WEATHER SERVICE IN STATE COLLEGE HAS ISSUED A
FLOOD WARNING EFFECTIVE UNTIL 900 AM EST FOR PEOPLE IN THE
FOLLOWING LOCATIONS...
 
IN  PENNSYLVANIA
 
   ...LANCASTER COUNTY
 
RAIN...HEAVY AT TIMES...CONTINUES TO CAUSE SMALL STREAMS AND CREEKS TO
RISE TO NEAR BANKFUL LEVELS. STREAM GAGES INDICATE THAT THE LITTLE
CONESTOGA CREEK NEAR FLORY MILLS IS FLOODING.
 
MORE HEAVY RAIN THIS MORNING MAY CAUSE ADDITIONAL FLOODING.
 
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY.  THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO
CROSS SAFELY.  VEHICLES CAUGHT IN RISING WATER SHOULD BE
ABANDONED QUICKLY.  MOVE TO HIGHER GROUND.
 
JUNG
 
&

NWS State College, PA wrote its last area forecast discussion before this flash flood warning went out at Nov 8, 3:08 AM EST, 2 hours 14 minutes earlier.

CENTRAL PENNSYLVANIA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE STATE COLLEGE PA
300 AM EST SAT NOV 8 1997

ALREADY HAD EXTENSIVE PHONE COORD WITH PHI AND PIT AS PER FORECAST
FOR THE MORNING.

HEAVIEST RAIN HAS NOW EXITED THE CTP CWA INTO PIT AREA.  ANOTHER
BATCH OF MODERATE TO HEAVY RAIN DEVELOPING IN THE LOWER SUSQUEHANNA
VALLEY ATTM.

UPPER LEVEL LOW HAS REMAINED NEARLY STATIONARY DURING THE LAST 12
HOURS...AND HAS SET UP A STEADY-STATE EASTERLY FLOW OF MOISTURE OFF
THE ATLANTIC INTO SOUTHERN PA.  LOW LEVEL TROF/CONVERGENCE ZONE HAS
FOCUSED HEAVIEST RAIN ACROSS THE SOUTH CENTRAL MTS AND LAUREL
HIGHLANDS.

IF WE BELIEVE THE MODELS THIS MORNING...THE LOW LEVEL JET WILL
FINALLY SHIFT NORTHWARD TODAY.  ACTUALLY...JET AND FORCING WILL
ROTATE DURING THE DAY...CHANGING THE ORIENTATION OF PCPN FROM E-W
OVER SOUTHERN PA TO A NE SW ORIENTATION LATER TODAY.  THIS WAS
SUPPOSED TO HAPPEN DURING THE DAY FRIDAY...BUT UPPER LEVEL SYSTEM
DID NOT MOVE.  WV IMAGRY STILL NOT INDICATING ANY MOVEMENT OF THE
UPPER CIRCULATION...SO TODAYS MODELS AGAIN MAY BE TOO FAST MOVING
PCPN OUT.

THEREFORE DISCOUNT PALTRY NGM PCPN NUMBERS...AND SUGGEST AT LEAST
ANOTHER .50 INCHES IN LOWER JUNIATA RIVE(R.  FFA SHOULD BE CONTINUED
INTO MORNING AS THEY STAND.

JUNG

Flash Flood Warnings in Pennsylvania, 1997Every flash flood warning in 1997

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.