Alert archive / Pennsylvania / Flash Flood Warnings in 1994
Flash Flood Warning 15, NWS State College, PA
NWS State College, PA issued this flash flood warning at Aug 18, 1994, 2:39 AM EDT for Union County, Pennsylvania. It was in force for 2 hr.
The area
The counties it named.
The facts
- Issued
- Aug 18, 1994, 2:39 AM EDT (06:39 UTC)
- Expired
- Aug 18, 1994, 4:45 AM EDT
- In force
- 2 hr
- Issued by
- NWS State College, PA
- Area
- Whole counties
County Union County, PA
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 00:00Z, 6.7 hours before the alert went out and 226 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
- 737 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 580 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 207 m²/s²
- 0-3 km storm-relative helicity
- 244 m²/s²
- Significant tornado parameter
- 0.7
- Supercell composite
- 8.8
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KCTP 180639 FFWCTP PAC119-180845- BULLETIN - EBS ACTIVATION REQUESTED URBAN AND SMALL STREAM FLOOD WARNING NATIONAL WEATHER SERVICE STATE COLLEGE PA 239 AM EDT THU AUG 18 1994 THE NATIONAL WEATHER SERVICE IN STATE COLLEGE HAS ISSUED A URBAN AND SMALL STREAM FLOOD WARNING EFFECTIVE UNTIL 445 AM EDT FOR PEOPLE IN THE FOLLOWING LOCATIONS...... IN PENNSYLVANIA ...UNION COUNTY AT 235 AM EMERGENCY MANAGEMENT HAS REPORTED THAT THE BUFFALO CREEK HAS OVERFLOWED IT'S BANKS CLOSING SEVERAL ROADWAYS IN MIFFLINBURG. THE ROADS REPORTED TO BE CLOSED ARE NORTH FOURTH ST....NORTH THIRD ST. AND NORTH EIGHTH ST.. DOPPLER RADAR SHOWS THAT THE HEAVIEST RAIN HAS MOVED OUT OF UNION COUNTY BUT RAIN GAUGE DATA HAS INDICATED THAT 3-4 INCHES OF RAIN HAS FALLEN IN THE LAST 12 HOURS. RUNOFF FROM THESE RAINS WILL CONTINUE FLOODING PROBLEMS. DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR C^AR TO CROSS SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY. MOVE TO HIGHER GROUND. WINTHER/NICOSIA
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, Aug 18, 12:16 AM EDT, 2 hours 23 minutes before
PAZ004>006-010>012-017>019-024>028-033>037-041-042-045-046-049>053- 056>059-063>066-180620- SPECIAL WEATHER STATEMENT AND SHORT TERM FORECAST NATIONAL WEATHER SERVICE STATE COLLEGE PA 1218 AM EDT THU AUG 18 1994 ...A SMALL STREAM AND URBAN FLOOD WATCH CONTINUES IN EFFECT OVERNIGHT FOR PORTIONS OF THE MIDDLE SUSQUEHANNA VALLEY ... A SMALL STREAM AND URBAN FLOOD WATCH CONTINUES IN EFFECT OVERNIGHT FOR THE FOLLOWING COUNTIES... LYCOMING... UNION... SNYDER... SULLIVAN... SOUTHERN CLINTON... MONTOUR... NORTHUMBERLAND... COLUMBIA AND SCHUYLKILL. AT 1205 AM EDT... DOPPLER RADAR SHOWED A LARGE AREA OF LIGHT TO MODERATE RAIN ACROSS NORTHERN PENNSYLVANIA AND THE MIDDLE SUSQUEHANNA VALLEY. THE AREA OF RAIN WAS MAINLY NORTH OF INTERSTATE 80... EXCEPT IN THE SUSQUEHANNA VALLEY WHERE RAIN EXTENDED FROM WILLIAMSPORT AND BERWICK TO JUST NORTH OF THE GREATER HARRISBURG AREA. SOUTH OF I-80 ACROSS THE CENTRAL AND SOUTH CENTRAL MOUNTAIN AREAS...RADAR SHOWED ONLY PATCHY AREAS OF LIGHT RAIN. THE LARGE AREA OF RAIN IS EXPECTED TO CONTINUE MOVING SLOWLY NORTHEAST LATE THIS EVENING WITH SIGNIFICANT RAINFALL CONTINUING MAINLY NORTH OF I-80 AND ACROSS THE MIDDLE SUSQUEHANNA VALLEY THROUGH 2 AM. AS A RESULT... A SMALL STREAM AND URBAN FLOOD WATCH CONTINUES OVERNIGHT FOR MUCH OF THE MIDDLE SUSQUEHANNA VALLEY. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODING. WATER ON ROADWAYS MAY BE HARD TO SEE. NICOSIA
Special weather statement, Aug 18, 12:18 AM EDT, 2 hours 21 minutes before
PAZ004>006-010>012-017>019-024>028-033>037-041-042-045-046-049>053- 056>059-063>066-180620- SPECIAL WEATHER STATEMENT AND SHORT TERM FORECAST NATIONAL WEATHER SERVICE STATE COLLEGE PA 1218 AM EDT THU AUG 18 1994 ...A SMALL STREAM AND URBAN FLOOD WATCH CONTINUES IN EFFECT OVERNIGHT FOR PORTIONS OF THE MIDDLE SUSQUEHANNA VALLEY ... A SMALL STREAM AND URBAN FLOOD WATCH CONTINUES IN EFFECT OVERNIGHT FOR THE FOLLOWING COUNTIES... LYCOMING... UNION... SNYDER... SULLIVAN... SOUTHERN CLINTON... MONTOUR... NORTHUMBERLAND... COLUMBIA AND SCHUYLKILL. AT 1205 AM EDT... DOPPLER RADAR SHOWED A LARGE AREA OF LIGHT TO MODERATE RAIN ACROSS NORTHERN PENNSYLVANIA AND THE MIDDLE SUSQUEHANNA VALLEY. THE AREA OF RAIN WAS MAINLY NORTH OF INTERSTATE 80... EXCEPT IN THE SUSQUEHANNA VALLEY WHERE RAIN EXTENDED FROM WILLIAMSPORT AND BERWICK TO JUST NORTH OF THE GREATER HARRISBURG AREA. SOUTH OF I-80 ACROSS THE CENTRAL AND SOUTH CENTRAL MOUNTAIN AREAS...RADAR SHOWED ONLY PATCHY AREAS OF LIGHT RAIN. THE LARGE AREA OF RAIN IS EXPECTED TO CONTINUE MOVING SLOWLY NORTHEAST LATE THIS EVENING WITH SIGNIFICANT RAINFALL CONTINUING MAINLY NORTH OF I-80 AND ACROSS THE MIDDLE SUSQUEHANNA VALLEY THROUGH 2 AM. AS A RESULT... A SMALL STREAM AND URBAN FLOOD WATCH CONTINUES OVERNIGHT FOR MUCH OF THE MIDDLE SUSQUEHANNA VALLEY. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODING. WATER ON ROADWAYS MAY BE HARD TO SEE. NICOSIA
Special weather statement, Aug 18, 12:50 AM EDT, 1 hour 49 minutes before
PAZ012-037-038-041-042-045-046-049>052-181750- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WILLIAMSPORT PA 1250 AM EDT THU AUG 18 1994 RADIO STATION WX-55 WILLIAMSPORT PENNSYLVANIA IS BACK ON THE AIR. FJG
Special weather statement, Aug 18, 2:10 AM EDT, 29 minutes before
PAZ004>006-010>012-017>019-024>028-033>037-041-042-045-046-049>053- 056>059-063>066-180810- SPECIAL WEATHER STATEMENT - NATIONAL WEATHER SERVICE STATE COLLEGE PA 211 AM EDT THU AUG 18 1994 A SMALL STREAM AND URBAN FLOOD WATCH CONTINUES IN EFFECT OVERNIGHT FOR THE FOLLOWING COUNTIES... LYCOMING... UNION... SNYDER... SULLIVAN... SOUTHERN CLINTON... MONTOUR... NORTHUMBERLAND... COLUMBIA AND SCHUYLKILL. AT 2 AM EDT...STATE COLLEGE DOPPLER RADAR SHOWED AN AREA OF LIGHT TO MODERATE RAIN OVER TIOGA...POTTER AND MCKEAN COUNTIES. THIS AREA CONTINUES TO MOVE NORTH AT 20 MPH. RAIN ACROSS THESE AREAS SHOULD TAPER TO LIGHT SHOWERS DURING THE NEXT 1-2 HOURS. ACROSS SOUTHERN PENNSYLVANIA...A LARGE AREA OF SCATTERED SHOWERS CONTINUES TO PROGRESS NORTHWARD. THIS AREA WILL AFFECT AREAS THAT HAVE ALREADY HAVE HAD BETWEEN 1-3 INCHES...HENCE...RESIDENTS ARE ADVISED TO KEEP ABREST OF THE CURRENT WEATHER CONDITIONS AND TAKE ACTION IF A FLOOD WARNING IS ISSUED FOR YOUR COUNTY. ADDITIONAL RAINFALL ACROSS CENTRAL PENNSYLVANIA WILL LEAD TO FLOODING OF SMALL STREAMS AND LOW LYING AREAS. STAY TUNED TO NOAA WEATHER RADIO AND TV FOR FURTHER UPDATES AND WARNINGS. WINTHER
Special weather statement, Aug 18, 2:11 AM EDT, 28 minutes before
PAZ004>006-010>012-017>019-024>028-033>037-041-042-045-046-049>053- 056>059-063>066-180810- SPECIAL WEATHER STATEMENT CORRECTED NATIONAL WEATHER SERVICE STATE COLLEGE PA 211 AM EDT THU AUG 18 1994 A SMALL STREAM AND URBAN FLOOD WATCH CONTINUES IN EFFECT OVERNIGHT FOR THE FOLLOWING COUNTIES... LYCOMING... UNION... SNYDER... SULLIVAN... SOUTHERN CLINTON... MONTOUR... NORTHUMBERLAND... COLUMBIA AND SCHUYLKILL. AT 2 AM EDT...STATE COLLEGE DOPPLER RADAR SHOWED AN AREA OF LIGHT TO MODERATE RAIN OVER TIOGA...POTTER AND MCKEAN COUNTIES. THIS AREA CONTINUES TO MOVE NORTH AT 20 MPH. RAIN ACROSS THESE AREAS SHOULD TAPER TO LIGHT SHOWERS DURING THE NEXT 1-2 HOURS. ACROSS SOUTHERN PENNSYLVANIA...A LARGE AREA OF SCATTERED SHOWERS CONTINUES TO PROGRESS NORTHWARD. THIS AREA WILL AFFECT AREAS THAT HAVE ALREADY HAVE HAD BETWEEN 1-3 INCHES...HENCE...RESIDENTS ARE ADVISED TO KEEP ABREAST OF THE CURRENT WEATHER CONDITIONS AND TAKE ACTION IF A FLOOD WARNING IS ISSUED FOR YOUR COUNTY. ADDITIONAL RAINFALL ACROSS CENTRAL PENNSYLVANIA MAY LEAD TO FLOODING OF SMALL STREAMS AND LOW LYING AREAS. STAY TUNED TO NOAA WEATHER RADIO AND TV FOR FURTHER UPDATES AND WARNINGS. WINTHER /
Special weather statement, Aug 18, 2:12 AM EDT, 27 minutes before
PAZ004>006-010>012-017>019-024>028-033>037-041-042-045-046-049>053- 056>059-063>066-180810- SPECIAL WEATHER STATEMENT CORRECTED NATIONAL WEATHER SERVICE STATE COLLEGE PA 211 AM EDT THU AUG 18 1994 A SMALL STREAM AND URBAN FLOOD WATCH CONTINUES IN EFFECT OVERNIGHT FOR THE FOLLOWING COUNTIES... LYCOMING... UNION... SNYDER... SULLIVAN... SOUTHERN CLINTON... MONTOUR... NORTHUMBERLAND... COLUMBIA AND SCHUYLKILL. AT 2 AM EDT...STATE COLLEGE DOPPLER RADAR SHOWED AN AREA OF LIGHT TO MODERATE RAIN OVER TIOGA...POTTER AND MCKEAN COUNTIES. THIS AREA CONTINUES TO MOVE NORTH AT 20 MPH. RAIN ACROSS THESE AREAS SHOULD TAPER TO LIGHT SHOWERS DURING THE NEXT 1-2 HOURS. ACROSS SOUTHERN PENNSYLVANIA...A LARGE AREA OF SCATTERED SHOWERS CONTINUES TO PROGRESS NORTHWARD. THIS AREA WILL AFFECT AREAS THAT HAVE ALREADY HAVE HAD BETWEEN 1-3 INCHES...HENCE...RESIDENTS ARE ADVISED TO KEEP ABREAST OF THE CURRENT WEATHER CONDITIONS AND TAKE ACTION IF A FLOOD WARNING IS ISSUED FOR YOUR COUNTY. ADDITIONAL RAINFALL ACROSS CENTRAL PENNSYLVANIA MAY LEAD TO FLOODING OF SMALL STREAMS AND LOW LYING AREAS. STAY TUNED TO NOAA WEATHER RADIO AND TV FOR FURTHER UPDATES AND WARNINGS. WINTHER
The office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 17, 11:25 PM EDT | Flash Flood Warning | CTP | Cameron | 2 hr |
| Aug 18, 1:08 AM EDT | Flash Flood Warning | CTP | Lycoming | 2 hr |
| Aug 18, 1:23 AM EDT | Flash Flood Warning | CTP | Tioga | 2 hr |
| Aug 18, 1:31 AM EDT | Flash Flood Warning | CTP | Potter | 119 min |
| Aug 18, 3:05 AM EDT | Flash Flood Warning | CTP | Tioga | 3 hr |
| Aug 18, 3:10 AM EDT | Flash Flood Warning | CTP | Lycoming | 3 hr |
| Aug 18, 3:40 AM EDT | Flash Flood Warning | CTP | Clearfield, Clinton | 4 hr |
| Aug 18, 3:52 AM EDT | Flash Flood Warning | CTP | Centre | 4 hr |
| Aug 18, 4:25 AM EDT | Flash Flood Warning | CTP | Tioga | 6 hr |
| Aug 18, 4:34 AM EDT | Flash Flood Warning | CTP | Lycoming, Union | 5 hr |
| Aug 18, 9:00 AM EDT | Flash Flood Warning | CTP | Cameron | 3 hr |
| Aug 18, 9:57 AM EDT | Flash Flood Warning | CTP | Lycoming, Tioga | 3 hr |
| Aug 18, 1:00 PM EDT | Flash Flood Warning | CTP | Lycoming | 5 hr |
Nearby
Flash Flood Warnings in Pennsylvania, 1994Every flash flood warning in 1994
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.