Alert archive / Pennsylvania / Flash Flood Warnings in 1999
Flash Flood Warning 8, NWS State College, PA
NWS State College, PA issued this flash flood warning at Jan 18, 1999, 11:10 PM EST for York County, Pennsylvania. It was in force for 5 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
- Jan 18, 1999, 11:10 PM EST (04:10 UTC)
- Expired
- Jan 19, 1999, 4:05 AM EST
- In force
- 5 hr
- Issued by
- NWS State College, PA
- Area
- Whole counties
County York County, PA
The nearest sounding before it
Wallops Is Stn, VA (KWAL), launched 00:00Z, 4.2 hours before the alert went out and 249 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 549 m above ground
- 0-6 km bulk shear
- 64 kt
- 0-1 km storm-relative helicity
- -306 m²/s²
- 0-3 km storm-relative helicity
- -150 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KCTP 190415 FFWCTP PAC133-190905- BULLETIN - EAS ACTIVATION REQUESTED FLOOD WARNING NATIONAL WEATHER SERVICE STATE COLLEGE PA 1110 PM EST MON JAN 18 1999 THE NATIONAL WEATHER SERVICE HAS ISSUED A * FLOOD WARNING FOR... YORK COUNTY IN SOUTH CENTRAL PENNSYLVANIA. * UNTIL 405 AM EST. * AS OF 11 PM EST...THE RAIN HAS ENDED ACROSS YORK COUNTY. HOWEVER...RUNOFF FROM THE RAINS OF EARLIER TODAY...COMBINED WITH SNOW MELT HAVE RESULTED IN SOME FLOODING. SEVERAL ROADS WERE REPORTED TO BE FLOODED IN YORK COUNTY. * NOTHING MORE THAN A FEW SPRINKLES OR FLURRIES ARE EXPECTED OVERNIGHT. CONDITIONS WILL GRADUALLY IMPROVE LATER TONIGHT AND TUESDAY AS MAINLY DRY WEATHER CONTINUES. BE ESPECIALLY CAUTIOU0S AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLASH FLOODING. .END/MSE/DJN &
What forecasters said that day
The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS State College, PA wrote its last area forecast discussion before this flash flood warning went out at Jan 18, 9:15 PM EST, 1 hour 55 minutes earlier.
Area forecast discussion, Jan 18, 9:15 PM EST, 1 hour 55 minutes before
CENTRAL PENNSYLVANIA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE STATE COLLEGE PA
915 PM EST MON JAN 18 1999
DECIDED TO SEND THE ZONES OUT QUICKLY THIS EVENING...AS HAVE GOTTEN
REPORTS OF AROUND 4 INCHES OF NEW SNOW AROUND JOHNSTOWN...SO HAVE TO
PUT OUT A QUICK WINTER WEATHER ADVISORY. UPPER LOW CONTINUES TO LIFT
NORTHEAST ACROSS THE EASTERN LAKES THIS EVENING. SNOW HAS BEEN VERY
PERSISTENT OVER THE WESTERN HALF OF THE CWA THIS EVENING. EAST OF
THE ALLEGHENYS PRCECIP HAS BEEN LIGHT AND SPOTTY...AND MOSTLY IN
THE FORM OF RAIN AS BOUNDARY TEMPS REMAIN ABOVE FREEZING. TEMPS WILL
ONLY SLOWLY COOL OVERNIGHT WITH WSW WIND AND AIR MOVING IN REALLY
NOT ALL THAT COLD. SNOW SHOULD DIMINISH AFTER MIDNIGHT AS THE UPPER
TROUGH LIFTS OUT AND WEAKENS.
ELSEWHERE...WILL KEEP FLASH FLOOD WATCH/WARNINGS GOING FOR AWHILE
LONGER IN LANCASTER AND LEBANON COUNTIES. IFLOWS STREAM GAGES STILL
SHOWING LOTS OF THE STREAMS OUT OF THEIR BANKS ACROSS LANCASTER
COUNTY. ELSEWHERE WILL CANCEL THE WATCH AS COLDER DRYER AIR MOVES IN.
.CTP...FFA TONIGHT LANCASTER AND LEBANON COUNTIES.
WSW TONIGHT LAUREL HIGHLANDS.
MSEIn the hours before
Local storm report, Jan 18, 5:10 PM EST, 6 hours before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE STATE COLLEGE PENNSYLVANIA
610 PM EDT MON JAN 18 1999
TIME(EDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
1250 PM WESTMONT PA 60 MPH TSTM GUST
01/18/99 CAMBRIA LARGE TREE LIMBS BLOWN
DOWN
0110 PM COLVER PA 60 MPH TSTM GUST
01/18/99 CAMBRIA
0125 PM BURNSIDE PA WIND DAMAGE
01/18/99 CLEARFIELD TREES AND WIRES DOWN.
0135 PM BEDFORD PA TORNADO
01/18/99 BEDFORD POSSIBLE TORNADO. ROOF OFF
HOUSE. TREES DOWN.
0135 PM EVERETT PA TORNADO
01/18/99 BEDFORD TORNADO SIGHTED ALONG
ROUTE 30 BETWEEN BEDFORD
AND EVERETT.
0135 PM ALTOONA PA WIND DAMAGE
01/18/99 BLAIR TREES DOWN. TREE ON HOUSE.
0210 PM 3E WAYNESBORO PA TORNADO
01/18/99 FRANKLIN TORNADO SIGHTED IN
WASHINGTON TWP. WINDOWS
BLOWN OUT. TREES DOWN.
0250 PM COUNTYWIDE PA FLOODING
01/18/99 SCHUYLKILL ROADS AND BASEMENTS
FLOODED.
0250 PM COUNTYWIDE PA FLOODING
01/18/99 COLUMBIA ROADS AND BASEMENTS
FLOODED.
0255 PM COUNTYWIDE PA FLOODING
01/18/99 LEBANON ROADS AND BASEMENTS
FLOODED.
0300 PM SELINSGROVE PA WIND DAMAGE
01/18/99 SNYDER WIRE DOWN.
0330 PM LEACOCK PA WIND DAMAGE
01/18/99 LANCASTER TELEPHONE POLE SNAPPED
OFF.
OSTUNO/EVANSLocal storm report, Jan 18, 6:08 PM EST, 5 hours 2 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE STATE COLLEGE PENNSYLVANIA
610 PM EDT MON JAN 18 1999
TIME(EDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
1250 PM WESTMONT PA 60 MPH TSTM GUST
01/18/99 CAMBRIA LARGE TREE LIMBS BLOWN
DOWN
0110 PM COLVER PA 60 MPH TSTM GUST
01/18/99 CAMBRIA
0125 PM BURNSIDE PA WIND DAMAGE
01/18/99 CLEARFIELD TREES AND WIRES DOWN.
0135 PM BEDFORD PA TORNADO
01/18/99 BEDFORD POSSIBLE TORNADO. ROOF OFF
HOUSE. TREES DOWN.
0135 PM EVERETT PA TORNADO
01/18/99 BEDFORD TORNADO SIGHTED ALONG
ROUTE 30 BETWEEN BEDFORD
AND EVERETT.
0135 PM ALTOONA PA WIND DAMAGE
01/18/99 BLAIR TREES DOWN. TREE ON HOUSE.
0210 PM 3E WAYNESBORO PA TORNADO
01/18/99 FRANKLIN TORNADO SIGHTED IN
WASHINGTON TWP. WINDOWS
BLOWN OUT. TREES DOWN.
0250 PM COUNTYWIDE PA FLOODING
01/18/99 SCHUYLKILL ROADS AND BASEMENTS
FLOODED.
0250 PM COUNTYWIDE PA FLOODING
01/18/99 COLUMBIA ROADS AND BASEMENTS
FLOODED.
0255 PM COUNTYWIDE PA FLOODING
01/18/99 LEBANON ROADS AND BASEMENTS
FLOODED.
0300 PM SELINSGROVE PA WIND DAMAGE
01/18/99 SN`YDER WIRE DOWN.
0330 PM LEACOCK PA WIND DAMAGE
01/18/99 LANCASTER TELEPHONE POLE SNAPPED
OFF.
OSTUNO/EVANSLocal storm report, Jan 18, 7:25 PM EST, 3 hours 45 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE STATE COLLEGE PENNSYLVANIA
725 PM EST MON JAN 18 1999
TIME(EDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
1250 PM WESTMONT PA 60 MPH TSTM GUST
01/18/99 CAMBRIA LARGE TREE LIMBS BLOWN
DOWN
0110 PM COLVER PA 60 MPH TSTM GUST
01/18/99 CAMBRIA
0125 PM BURNSIDE PA WIND DAMAGE
01/18/99 CLEARFIELD TREES AND WIRES DOWN.
0135 PM BEDFORD PA TORNADO
01/18/99 BEDFORD POSSIBLE TORNADO. ONE BUILDING
DESTROYED. EIGHT DAMAGED.
0135 PM EVERETT PA TORNADO
01/18/99 BEDFORD TORNADO SIGHTED ALONG
ROUTE 30 BETWEEN BEDFORD
AND EVERETT.
0135 PM ALTOONA PA WIND DAMAGE
01/18/99 BLAIR TREES DOWN. TREE ON HOUSE.
0210 PM 3E WAYNESBORO PA TORNADO
01/18/99 FRANKLIN TORNADO SIGHTED IN
WASHINGTON TWP. WINDOWS
BLOWN OUT. TREES DOWN.
0220 PM MILLHEIM PA .75 INCH HAIL
01/18/99 CENTRE DIME-SIZED HAIL.
0250 PM COUNTYWIDE PA FLOODING
01/18/99 COLUMBIA ROADS AND BASEMENTS
FLOODED.
0250 PM COUNTYWIDE PA FLOODING
01/18/99 SCHUYLKILL ROADS AND BASEMENTS
FLOODED.
0255 PM COUNTYWIDE PA FLOODING
01/18/99 LEBANON ROADS AND BASEMENTS
FLOODED.
0258 PM MONTOURSVILLE PA WIND GUST
01/18/99 LYCOMING 71 MPH WIND GUST.
0300 PM MOUNT HOLLY SPRINGS PA WIND DAMAGE
01/18/99 CUMBERLAND TREE DOWN.
0300 PM SELINSGROVE PA WIND DAMAGE
01/18/99 SNYDER WIRE DOWN.
0330 PM LEACOCK PA WIND DAMAGE
01/18/99 LANCASTER TELEPHONE POLE SNAPPED
OFF.
OSTUNO/EVANSThe office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 18, 7:10 PM EST | Flash Flood Warning | CTP | Lancaster, Lebanon | 5 hr |
| Jan 18, 10:25 PM EST | Flash Flood Warning | CTP | Lancaster, Lebanon | 6 hr |
| Jan 19, 1:38 PM EST | Flash Flood Warning | CTP | Lycoming | 5 hr |
Nearby
Flash Flood Warnings in Pennsylvania, 1999Every flash flood warning in 1999
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.