Alert archive / Pennsylvania / Flash Flood Warnings in 1999
Flash Flood Warning 6, NWS State College, PA
NWS State College, PA issued this flash flood warning at Jan 18, 1999, 7:10 PM EST for Lancaster County, Lebanon 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, 7:10 PM EST (00:10 UTC)
- Expired
- Jan 19, 1999, 12:00 AM EST
- In force
- 5 hr
- Issued by
- NWS State College, PA
- Area
- Whole counties
Counties Lancaster County, PA, Lebanon County, PA
The nearest sounding before it
Wallops Is Stn, VA (KWAL), launched 00:00Z, 0.2 hours before the alert went out and 266 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 190010 FFWCTP PAC071-075-190510- BULLETIN - EAS ACTIVATION REQUESTED FLOOD WARNING NATIONAL WEATHER SERVICE STATE COLLEGE PA 710 PM EST MON JAN 18 1999 THE NATIONAL WEATHER SERVICE HAS CONTINUED A * FLOOD WARNING FOR... LEBANON COUNTY IN EAST CENTRAL PENNSYLVANIA. LANCASTER COUNTY IN SOUTHEASTERN PENNSYLVANIA. * UNTIL 1200 AM EST. * AT 700 PM MOST OF THE RAIN HAD ENDED ACROSS THE LOWER SUSQUEHENNA VALLEY OF CENTRAL PENNSYLVANIA. HOWEVER...EMERGENCY OFFICIALS INDICATE THAT FLOODING PROBLEMS WERE CONTINUING ON MANY ROADWAYS. AUTOMATED STREAM GAGES IN LANCASTER COUNTY INDICATED THAT MANY SMALL STREAMS WERE OUT OF THEIR BANKS. * NOTHING MORE THAN A FEW SCATTERED LIGHT RAIN SHOWERS A2RE EXPECTED THROUGH THE REST OF THE NIGHT. CONDITIONS WILL GRADUALLY IMPROVE OVERNIGHT. IF YOU ARE IN THESE AREAS...DO NOT DRIVE THROUGH WATER COVERING THE ROAD. .END/MSE &
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, 3:30 PM EST, 3 hours 40 minutes earlier.
Area forecast discussion, Jan 18, 3:30 PM EST, 3 hours 40 minutes before
CENTRAL PENNSYLVANIA FORECAST DISCUSSION NATIONAL WEATHER SERVICE STATE COLLEGE PA 330 PM EST MON JAN 18 1999 ...WORK ZONES OUT AT 245 AS PHLADMCTP... ...ZONES OUT BY 4 PM AS PHLZFPCTP... CDFRNT WILL MOVE EAST OF THE AREA BY THIS EVENING TAKING THE HEAVY RAIN WITH IT. HOWEVER...WILL KEEP THE FLASH FLOOD WATCH GOING THROUGH THE EVENING IN LOWER SUSQ VALL...WHERE FLOODING IS PRESENTLY OCCURRING. TONIGHT...AS UPPER LOW PASSES TO OUR NORTH...WRAP AROUND MOISTURE WILL ASCEND THE APPALACHIANS RESULTING IN SNOW SHOWERS FROM THE NW MTNS SOUTHWARD THRU THE LAURELS. LATEST RUC SUGGESTS POSSIBLE ADDITIONAL ACCUMS AROUND 1 INCH. TO THE EAST...DRY SLOT CURRENTLY ENTERING W PA...WILL CLEAR THINGS OUT RAPIDLY IN THE SUSQ VALL THIS EVENING. FOR THE RIDGE/VALLEY REGION...WILL USE VARIABLY CLDY OVERNIGHT WITH SCT FLURRIES. TUESDAY...SOUNDINGS SHOW INVERSIONS LOWERING AS COLD POOL LIFTS OUT OF THE AREA. UPSLOPE CLOUDINESS AND FLURRIES OVER THE N AND W MTNS WILL ERODE TO MSUNNY SKIES BY AFTN. ELSEWHERE...SOUNDINGS SUPPORT MSUNNY FOR THE BALANCE OF THE DAY. HOURLY ETA 2-METER TEMPS FRM PSU SUGGEST AFTN HIGHS FM THE M 30S NW MTNS TO THE M 40S LOWER SUSQ. WK DISTURBANCES IN ZONAL FLOW THEN PROGGED TO AFFECT THE AREA LATE TUES NITE AND WEDNESDAY. MODEL CONSENSUS WUD PLACE S PA IN LINE FOR THE CHANCE OF SOME LIGHT SNOW OR RAIN TUES NITE AND WED. .CTP...FLASH FLOOD WATCH THROUGH MIDNIGHT FOR THE SUSQ VALLEY. FITZGERALD
In the hours before
Local storm report, Jan 18, 5:10 PM EST, 2 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, 1 hour 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/EVANSThe office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 18, 10:25 PM EST | Flash Flood Warning | CTP | Lancaster, Lebanon | 6 hr |
| Jan 18, 11:10 PM EST | Flash Flood Warning | CTP | York | 5 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.