Alert archive / Pennsylvania / Flash Flood Warnings in 1993

Flash Flood Warning 4, NWS State College, PA

March 4, 1993Cumberland County, Pennsylvania

NWS State College, PA issued this flash flood warning at Mar 4, 1993, 9:11 PM EST for Cumberland County, Pennsylvania. It was in force for 8 hr.

The area

The counties it named.

The facts

Issued
Mar 4, 1993, 9:11 PM EST (02:11 UTC)
Expired
Mar 5, 1993, 5:00 AM EST
In force
8 hr
Issued by
NWS State College, PA
Area
Whole counties

County Cumberland County, PA

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 00:00Z, 2.2 hours before the alert went out and 135 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 1993-03-05Temperature 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°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Washington/Dulle, VA at 00:00Z on 1993-03-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 96 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
561 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
96 m²/s²
0-3 km storm-relative helicity
327 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 
TTAA00 KHAR 050211
FFWHAR
PAC071-041-051000-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE HARRISBURG PA
911 PM EST THU MAR 4 1993
 
THE NATIONAL WEATHER SERVICE IN HARRISBURG HAS EXTENDED THE
URBAN AND SMALL STREAM FLOOD WARNING EFFECTIVE UNTIL  500 AM EST
FOR PEOPLE IN THE FOLLOWING LOCATION......
 
IN SOUTH CENTRAL PENNSYLVANIA
 
   ...LANCASTER COUNTY
 
   ...CUMBERLAND COUNTY
 
LANCATER COUNTY EMERGENCY MANAGEMENT OFFICIALS CONTINUE TO REPORT THAT
THE CONESTOGA CREEK AND RIVER ARE STILL OVER THEIR BANKS. MANY OTHER
STREAMS ARE OVER THEIR BANKS IN VARIOUS LOCATIONS AROUND THE COUNTY.
 
STREAMS AND CREEKS IN LANCASTER COUNTY WILL REMAIN OUT OF THEIR BANKS
OVERNIGHT EVENTHOUGH THE HEAVY RAINFALL HAS ENDED. FLOODIND WILL REMAIN PROBLEM OVERNIGHT INTO THE EARLY MORING HOURS AS THE FLOOD WATERS BEGIN
TO RECEED.
 
CUMBERLAND COUNTY LAW ENFORNCEMENT REPORT THAT STREAMS IN THE MOUNT HOLLAND PINE GROVE STATE PARK ARE OUT OF THEIR BANKS. WATER HAS OVERSPREAD
PORTIONS OF THE STATE PARK AND SOME ROADS ARE COVERED WITH WATER.
 
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE
THE DANGERS OF FLOODS AND FLASH FLOODS. IF FLASH FLOODING IS
OBSERVED...ACT QUICKLY. MOVE UP TO ESCAPE FLOOD WATERS. DO NOT
STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS TO RISE.
 
FENNER

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.

In the hours before

Special weather statement, Mar 4, 4:29 PM EST, 4 hours 42 minutes before
PAZ007-008-014-050000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILLIAMSPORT PA
430 PM EST THU FEB 4 1993

...WINTER WEATHER ADVISORY IN EFFECT TONIGHT AND FRIDAY FOR ALL OF
NORTHCENTRAL PENNSYLVANIA...
...WINTER STORM WARNING FOR NORTHERN CLINTON COUNTY...
...LOCALLY STRONG WINDS EXPECTED ACROSS THE REGION THIS EVENING...

...ADVISORY INFORMATION...
A WINTER WEATHER ADVISORY IS IN EFFECT TONIGHT AND FRIDAY ACROSS THE
NORTHERN TIER COUNTIES OF NORTHCENTRAL PENNSYLVANIA.  SNOW AMOUNTS
RANGING FROM 3 TO 6 INCHES WILL FALL IN THE ADVISORY AREA.  THIS
INCLUDES...BRADFORD...NORTHERN LYCOMING...TIOGA AND SULLIVAN COUNTIES.

AN ADVISORY FOR 2 TO 4 INCHES OF SNOW IS ALSO IN EFFECT FOR THE WEST
BRANCH AND MIDDLE SUSQUEHANNA VALLEYS.  THIS INCLUDES LOCK HAVEN...
WILLIAMSPORT...LEWISBURG AND SUNBURY.

LOCALLY...AMOUNTS OF UP TO 10 INCHES OF SNOW ARE ALSO POSSIBLE ACROSS
NORTHERN CLINTON COUNTY.

...LATE THIS AFTERNOON...
A MIXTURE OF RAIN...SLEET AND SNOW CONTINUED TO FALL ACROSS ALL OF THE
REGION LATE THIS AFTERNOON.  NATIONAL WEATHER SERVICE SPOTTERS HAVE
ALSO REPORTED ISOLATED POCKETS OF FREEZING RAIN.  ICE WAS ACCUMULATING
ON TREES AND POWER LINES ACROSS SULLIVAN COUNTY.  SNOW AMOUNTS HAVE
REMAINED LIGHT BUT SIGNIFICANT ACCUMULATIONS OF SLEET HAVE BEEN
REPORTED.

AS OF 4 PM...NEARLY ONE INCH /.8/ OF SLEET HAD ACCUMULATED HERE AT THE
WILLIAMSPORT-LYCOMING COUNTY AIRPORT.  NEARLY TWO INCHES OF SLEET WAS
REPORTED NEAR HEPBURNVILLE JUST NORTH OF WILLIAMSPORT.  REPORTS FROM
LOCAL POLICE AND HAM RADIO OPERATORS INDICATE THAT ROADS ARE
SLIPPERY...ESPECIALLY IN THE HIGHER ELEVATIONS.  STRONG AND GUSTY
WINDS HAVE BEEN REPORTED IN THE HIGHER ELEVATIONS WITH SPEEDS
ESTIMATED BETWEEN 40 AND 50 MPH BY NATIONAL WEATHER SERVICE SPOTTERS.

..TONIGHT...
THE MIXED PRECIPITATION WILL CHANGE OVER TO SNOW ACROSS THE NORTHERN
TIER COUNTIES THIS EVENING.  A CHANGE OVER TO SNOW SHOULD TAKE PLACE
IN THE WEST BRANCH AND MIDDLE SUSQUEHANNA VALLEYS NEAR MIDNIGHT.

...PRECAUTIONS...
DRIVING CONDITIONS WILL BECOME HAZARDOUS TONIGHT THROUGHOUT THE
REGION.  WHERE RAIN AND SLEET FELL DURING THE AFTERNOON...ROADS WILL
BECOME VERY SLIPPERY AS TEMPERATURES FALL BELOW FREEZING.
ANOTHER WEATHER CONCERN FOR THIS EVENING WILL BE THE WIND WHICH MAY
GUST BETWEEN 40 AND 50 MPH AT TIMES.  THE GUSTY WINDS COULD DOWN POWER
LINES AND SMALL TREE LIMBS AND WILL BE ESPECIALLY HAZARDOUS FOR HIGH
PROFILE VEHICLES.

THIS IS A RAPIDLY CHANGING WEATHER SITUATION.  LISTEN TO NOAA WEATHER
RADIO OR LOCAL NEWS MEDIA FOR THE LATEST NATIONAL WEATHER SERVICE
FORECASTS AND STATEMENTS.

...WEATHER FACTORS...
A LOW PRESSURE SYSTEM OVER SOUTHERN OHIO AND A SECOND LOW OVER EASTERN
VIRGINIA WILL MOVE SLOWLY NORTH AND EAST TONIGHT AND FRIDAY.  THIS
INTENSE STORM SYSTEM WILL PROVIDE THE WINTER WEATHER TO THE REGION.

JSN
Special weather statement, Mar 4, 5:00 PM EST, 4 hours 11 minutes before
PAZ007-008-014-050100-

SPECIAL WEATHER STATEMENT...CORRECTION
NATIONAL WEATHER SERVICE WILLIAMSPORT PA
600 PM EST THU FEB 4 1993

...WINTER WEATHER ADVISORY IN EFFECT TONIGHT AND FRIDAY FOR ALL OF
NORTHCENTRAL PENNSYLVANIA...
...WINTER STORM WARNING FOR NORTHERN CLINTON COUNTY...

...ADVISORY INFORMATION...
A WINTER WEATHER ADVISORY IS IN EFFECT TONIGHT AND FRIDAY ACROSS THE
NORTHERN TIER COUNTIES OF NORTHCENTRAL PENNSYLVANIA.  SNOW AMOUNTS
RANGING FROM 3 TO 6 INCHES WILL FALL IN THE ADVISORY AREA.  THIS
INCLUDES...BRADFORD...NORTHERN LYCOMING...TIOGA AND SULLIVAN COUNTIES.

AN ADVISORY FOR 2 TO 4 INCHES OF SNOW IS ALSO IN EFFECT FOR THE WEST
BRANCH AND MIDDLE SUSQUEHANNA VALLEYS.  THIS INCLUDES LOCK HAVEN...
WILLIAMSPORT...LEWISBURG AND SUNBURY.

LOCALLY...AMOUNTS OF UP TO 10 INCHES OF SNOW ARE ALSO POSSIBLE ACROSS
NORTHERN CLINTON COUNTY.

...LATE THIS AFTERNOON...
A MIXTURE OF RAIN...SLEET AND SNOW CONTINUED TO FALL ACROSS ALL OF THE
REGION LATE THIS AFTERNOON.  NATIONAL WEATHER SERVICE SPOTTERS HAVE
ALSO REPORTED ISOLATED POCKETS OF FREEZING RAIN.  ICE WAS ACCUMULATING
ON TREES AND POWER LINES ACROSS SULLIVAN COUNTY.  SNOW AMOUNTS HAVE
REMAINED LIGHT BUT SIGNIFICANT ACCUMULATIONS OF SLEET HAVE BEEN
REPORTED.

AS OF 6 PM...THE PRECIPITATION WAS ALL SNOW ACROSS THE NORTHERN TIER
COUNTIES WHERE 2 TO 3 INCHES OF NEW SNOW HAD FALLEN.  FARTHER
SOUTH...THE PRECIPITATION WAS MAINLY A MIX OF RAIN...SLEET AND SNOW.
NEARLY ONE INCH OF SLEET HAD ACCUMULATED HERE AT THE
WILLIAMSPORT-LYCOMING COUNTY AIRPORT.  NEARLY TWO INCHES OF SLEET WAS
REPORTED NEAR HEPBURNVILLE JUST NORTH OF WILLIAMSPORT.  REPORTS FROM
LOCAL POLICE AND HAM RADIO OPERATORS INDICATE THAT ROADS ARE
SLIPPERY...ESPECIALLY IN THE HIGHER ELEVATIONS.

..TONIGHT...
THE MIXED PRECIPITATION WILL CHANGE OVER TO SNOW ACROSS THE REGION
TONIGHT.  MOST AREAS IN THE NORTHERN TIER COUNTIES HAVE ALREADY
CHANGED OVER TO SNOW...WITH HEAVY SNOW FALLING IN SOME PLACES.

...PRECAUTIONS...
DRIVING CONDITIONS WILL BECOME HAZARDOUS TONIGHT THROUGHOUT THE
REGION.  WHERE RAIN AND SLEET FELL DURING THE AFTERNOON...ROADS WILL
BECOME VERY SLIPPERY AS TEMPERATURES FALL BELOW FREEZING.

THIS IS A RAPIDLY CHANGING WEATHER SITUATION.  LISTEN TO NOAA WEATHER
RADIO OR LOCAL NEWS MEDIA FOR THE LATEST NATIONAL WEATHER SERVICE
FORECASTS AND STATEMENTS.

...WEATHER FACTORS...
A LOW PRESSURE SYSTEM OVER SOUTHERN OHIO AND A SECOND LOW OVER EASTERN
VIRGINIA WILL MOVE SLOWLY NORTH AND EAST TONIGHT AND FRIDAY.  THIS
INTENSE STORM SYSTEM WILL PROVIDE THE WINTER WEATHER TO THE REGION.

KJF
Special weather statement, Mar 4, 5:55 PM EST, 3 hours 16 minutes before
PAZ007-008-014-050100-

SPECIAL WEATHER STATEMENT...CORRECTION
NATIONAL WEATHER SERVICE WILLIAMSPORT PA
545 PM EST THU FEB 4 1993

...WINTER WEATHER ADVISORY IN EFFECT TONIGHT AND FRIDAY FOR ALL OF
NORTHCENTRAL PENNSYLVANIA...
...WINTER STORM WARNING FOR NORTHERN CLINTON COUNTY...
...LOCALLY STRONG WINDS EXPECTED ACROSS THE REGION THIS EVENING...

...ADVISORY INFORMATION...
A WINTER WEATHER ADVISORY IS IN EFFECT TONIGHT AND FRIDAY ACROSS THE
NORTHERN TIER COUNTIES OF NORTHCENTRAL PENNSYLVANIA.  SNOW AMOUNTS
RANGING FROM 3 TO 6 INCHES WILL FALL IN THE ADVISORY AREA.  THIS
INCLUDES...BRADFORD...NORTHERN LYCOMING...TIOGA AND SULLIVAN COUNTIES.

AN ADVISORY FOR 2 TO 4 INCHES OF SNOW IS ALSO IN EFFECT FOR THE WEST
BRANCH AND MIDDLE SUSQUEHANNA VALLEYS.  THIS INCLUDES LOCK HAVEN...
WILLIAMSPORT...LEWISBURG AND SUNBURY.

LOCALLY...AMOUNTS OF UP TO 10 INCHES OF SNOW ARE ALSO POSSIBLE ACROSS
NORTHERN CLINTON COUNTY.

...LATE THIS AFTERNOON...
A MIXTURE OF RAIN...SLEET AND SNOW CONTINUED TO FALL ACROSS ALL OF THE
REGION LATE THIS AFTERNOON.  NATIONAL WEATHER SERVICE SPOTTERS HAVE
ALSO REPORTED ISOLATED POCKETS OF FREEZING RAIN.  ICE WAS ACCUMULATING
ON TREES AND POWER LINES ACROSS SULLIVAN COUNTY.  SNOW AMOUNTS HAVE
REMAINED LIGHT BUT SIGNIFICANT ACCUMULATIONS OF SLEET HAVE BEEN
REPORTED.

AS OF 4 PM...NEARLY ONE INCH /.8/ OF SLEET HAD ACCUMULATED HERE AT THE
WILLIAMSPORT-LYCOMING COUNTY AIRPORT.  NEARLY TWO INCHES OF SLEET WAS
REPORTED NEAR HEPBURNVILLE JUST NORTH OF WILLIAMSPORT.  REPORTS FROM
LOCAL POLICE AND HAM RADIO OPERATORS INDICATE THAT ROADS ARE
SLIPPERY...ESPECIALLY IN THE HIGHER ELEVATIONS.  STRONG AND GUSTY
WINDS HAVE BEEN REPORTED IN THE HIGHER ELEVATIONS WITH SPEEDS
ESTIMATED BETWEEN 40 AND 50 MPH BY NATIONAL WEATHER SERVICE SPOTTERS.

..TONIGHT...
THE MIXED PRECIPITATION WILL CHANGE OVER TO SNOW ACROSS THE REGION
TONIGHT.  MOST AREAS IN THE NORTHERN TIER COUNTIES HAVE ALREADY
CHANGED OVER TO SNOW...WITH HEAVY SNOW FALLING IN SOME PLACES.

...PRECAUTIONS...
DRIVING CONDITIONS WILL BECOME HAZARDOUS TONIGHT THROUGHOUT THE
REGION.  WHERE RAIN AND SLEET FELL DURING THE AFTERNOON...ROADS WILL
BECOME VERY SLIPPERY AS TEMPERATURES FALL BELOW FREEZING.

THIS IS A RAPIDLY CHANGING WEATHER SITUATION.  LISTEN TO NOAA WEATHER
RADIO OR LOCAL NEWS MEDIA FOR THE LATEST NATIONAL WEATHER SERVICE
FORECASTS AND STATEMENTS.

...WEATHER FACTORS...
A LOW PRESSURE SYSTEM OVER SOUTHERN OHIO AND A SECOND LOW OVER EASTERN
VIRGINIA WILL MOVE SLOWLY NORTH AND EAST TONIGHT AND FRIDAY.  THIS
INTENSE STORM SYSTEM WILL PROVIDE THE WINTER WEATHER TO THE REGION.

KJF
Special weather statement, Mar 4, 8:10 PM EST, 1 hour 1 minute before
PAZ007-008-014-050600-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILLIAMSPORT PA
800 PM EST THU FEB 4 1993

...WINTER WEATHER ADVISORY IN EFFECT TONIGHT AND FRIDAY FOR ALL OF
NORTHCENTRAL PENNSYLVANIA...
...WINTER STORM WARNING FOR NORTHERN CLINTON COUNTY...

...ADVISORY INFORMATION...
A WINTER WEATHER ADVISORY IS IN EFFECT TONIGHT AND FRIDAY ACROSS THE
NORTHERN TIER COUNTIES OF NORTHCENTRAL PENNSYLVANIA.  SNOW AMOUNTS
RANGING FROM 3 TO 6 INCHES WILL FALL IN THE ADVISORY AREA.  THIS
INCLUDES...BRADFORD...NORTHERN LYCOMING...TIOGA AND SULLIVAN COUNTIES.

AN ADVISORY FOR 2 TO 4 INCHES OF SNOW IS ALSO IN EFFECT FOR THE WEST
BRANCH AND MIDDLE SUSQUEHANNA VALLEYS.  THIS INCLUDES LOCK HAVEN...
WILLIAMSPORT...LEWISBURG AND SUNBURY.

LOCALLY...AMOUNTS OF UP TO 10 INCHES OF SNOW ARE ALSO POSSIBLE ACROSS
NORTHERN CLINTON COUNTY.

...THIS EVENING...
THE PRECIPITATION WAS ALL SNOW ACROSS THE NORTHERN TIER COUNTIES WHERE
2 TO 3 INCHES OF NEW SNOW HAD FALLEN.  FARTHER SOUTH...THE
PRECIPITATION WAS MAINLY A MIX OF RAIN...SLEET AND SNOW. NEARLY ONE
INCH OF SLEET HAD ACCUMULATED HERE AT THE WILLIAMSPORT-LYCOMING COUNTY
AIRPORT.  NEARLY TWO INCHES OF SLEET WAS REPORTED NEAR HEPBURNVILLE
JUST NORTH OF WILLIAMSPORT.  REPORTS FROM LOCAL POLICE AND HAM RADIO
OPERATORS INDICATE THAT ROADS ARE SLIPPERY...ESPECIALLY IN THE HIGHER
ELEVATIONS.

..TONIGHT...
THE MIXED PRECIPITATION WILL CHANGE OVER TO MOSTLY SNOW ACROSS THE
REGION TONIGHT.  MOST AREAS IN THE NORTHERN TIER COUNTIES HAVE ALREADY
CHANGED OVER TO SNOW...WITH HEAVY SNOW FALLING IN SOME PLACES.

...PRECAUTIONS...
DRIVING CONDITIONS WILL BECOME HAZARDOUS TONIGHT THROUGHOUT THE
REGION.  WHERE RAIN AND SLEET FELL DURING THE AFTERNOON...ROADS WILL
BECOME VERY SLIPPERY AS TEMPERATURES FALL BELOW FREEZING.

THERE HAVE BEEN NUMEROUS REPORTS FROM ACROSS THE REGION OF POWER
OUTAGES CAUSED BY THE INCLEMENT WEATHER.  BE PREPARED IF YOUR POWER
GOES OUT...KEEP FLASHLIGHTS HANDY AND MAKE SURE YOU HAVE AN ALTERNATE
SOURCE OF HEAT IF YOUR HOUSE IS HEATED BY ELECTRICITY.  BA CAREFUL IF
YOU USE CANDLES FOR LIGHT...MANY HOUSE FIRES ARE STARTED BY CANDLES.

THIS IS A RAPIDLY CHANGING WEATHER SITUATION.  LISTEN TO NOAA WEATHER
RADIO OR LOCAL NEWS MEDIA FOR THE LATEST NATIONAL WEATHER SERVICE
FORECASTS AND STATEMENTS.

...WEATHER FACTORS...
A LOW PRESSURE SYSTEM OVER WEST VIRGINIA AND A SECOND LOW OVER THE
CHESAPEAKE BAY WILL MOVE SLOWLY NORTH AND EAST TONIGHT AND FRIDAY.
THIS INTENSE STORM SYSTEM WILL PROVIDE THE WINTER WEATHER TO THE
REGION.

KJF
Special weather statement, Mar 4, 8:24 PM EST, 47 minutes before
PAZ007-008-014-050600-

SPECIAL WEATHER STATEMENT...CORRECTION
NATIONAL WEATHER SERVICE WILLIAMSPORT PA
800 PM EST THU FEB 4 1993

...WINTER WEATHER ADVISORY IN EFFECT TONIGHT AND FRIDAY FOR ALL OF
NORTHCENTRAL PENNSYLVANIA...
...WINTER STORM WARNING FOR NORTHERN CLINTON COUNTY...

...ADVISORY INFORMATION...
A WINTER WEATHER ADVISORY IS IN EFFECT TONIGHT AND FRIDAY ACROSS THE
NORTHERN TIER COUNTIES OF NORTHCENTRAL PENNSYLVANIA.  SNOW AMOUNTS
RANGING FROM 3 TO 6 INCHES WILL FALL IN THE ADVISORY AREA.  THIS
INCLUDES...BRADFORD...NORTHERN LYCOMING...TIOGA AND SULLIVAN COUNTIES.

AN ADVISORY FOR 2 TO 4 INCHES OF SNOW IS ALSO IN EFFECT FOR THE WEST
BRANCH AND MIDDLE SUSQUEHANNA VALLEYS.  THIS INCLUDES LOCK HAVEN...
WILLIAMSPORT...LEWISBURG AND SUNBURY.

LOCALLY...AMOUNTS OF UP TO 10 INCHES OF SNOW ARE ALSO POSSIBLE ACROSS
NORTHERN CLINTON COUNTY.

...THIS EVENING...
THE PRECIPITATION WAS ALL SNOW ACROSS THE NORTHERN TIER COUNTIES WHERE
2 TO 6 INCHES OF NEW SNOW HAD FALLEN.  FARTHER SOUTH...THE
PRECIPITATION WAS MAINLY A MIX OF RAIN...SLEET AND SNOW. NEARLY ONE
INCH OF SLEET HAD ACCUMULATED HERE AT THE WILLIAMSPORT-LYCOMING COUNTY
AIRPORT.  NEARLY TWO INCHES OF SLEET WAS REPORTED NEAR HEPBURNVILLE
JUST NORTH OF WILLIAMSPORT.  REPORTS FROM LOCAL POLICE AND HAM RADIO
OPERATORS INDICATE THAT ROADS ARE SLIPPERY...ESPECIALLY IN THE HIGHER
ELEVATIONS.

..TONIGHT...
THE MIXED PRECIPITATION WILL CHANGE OVER TO MOSTLY SNOW ACROSS THE
REGION TONIGHT.  MOST AREAS IN THE NORTHERN TIER COUNTIES HAVE ALREADY
CHANGED OVER TO SNOW...WITH HEAVY SNOW FALLING IN SOME PLACES.

...PRECAUTIONS...
DRIVING CONDITIONS WILL BECOME HAZARDOUS TONIGHT THROUGHOUT THE
REGION.  WHERE RAIN AND SLEET FELL DURING THE AFTERNOON...ROADS WILL
BECOME VERY SLIPPERY AS TEMPERATURES FALL BELOW FREEZING.

THERE HAVE BEEN NUMEROUS REPORTS FROM ACROSS THE REGION OF POWER
OUTAGES CAUSED BY THE INCLEMENT WEATHER.  BE PREPARED IF YOUR POWER
GOES OUT...KEEP FLASHLIGHTS HANDY AND MAKE SURE YOU HAVE AN ALTERNATE
SOURCE OF HEAT IF YOUR HOUSE IS HEATED BY ELECTRICITY.  BA CAREFUL IF
YOU USE CANDLES FOR LIGHT...MANY HOUSE FIRES ARE STARTED BY CANDLES.

THIS IS A RAPIDLY CHANGING WEATHER SITUATION.  LISTEN TO NOAA WEATHER
RADIO OR LOCAL NEWS MEDIA FOR THE LATEST NATIONAL WEATHER SERVICE
FORECASTS AND STATEMENTS.

...WEATHER FACTORS...
A LOW PRESSURE SYSTEM OVER WEST VIRGINIA AND A SECOND LOW OVER THE
CHESAPEAKE BAY WILL MOVE SLOWLY NORTH AND EAST TONIGHT AND FRIDAY.
THIS INTENSE STORM SYSTEM WILL PROVIDE THE WINTER WEATHER TO THE
REGION.

KJF

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 4, 7:14 PM ESTFlash Flood WarningCTPCumberland6 hr
Mar 4, 9:11 PM ESTFlash Flood WarningCTPLancaster8 hr

Nearby

Flash Flood Warnings in Pennsylvania, 1993Every flash flood warning in 1993

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.