Alert archive / Pennsylvania / Flash Flood Warnings in 1993
Flash Flood Warning 33, NWS State College, PA
NWS State College, PA issued this flash flood warning at Apr 16, 1993, 11:55 PM EDT for Huntingdon County, Pennsylvania. It was in force for 6 hr.
The area
The counties it named.
The facts
- Issued
- Apr 16, 1993, 11:55 PM EDT (03:55 UTC)
- Expired
- Apr 17, 1993, 5:45 AM EDT
- In force
- 6 hr
- Issued by
- NWS State College, PA
- Area
- Whole counties
County Huntingdon County, PA
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 00:00Z, 3.9 hours before the alert went out and 171 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
- 372 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 626 m above ground
- 0-6 km bulk shear
- 64 kt
- 0-1 km storm-relative helicity
- 97 m²/s²
- 0-3 km storm-relative helicity
- -6 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.9
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KHAR 170349 FFWHAR PAC061-170945- BULLETIN - IMMEDIATE BROADCAST REQUESTED SMALL STREAM FLOOD WARNING NATIONAL WEATHER SERVICE HARRISBURG PA 1155 PM EDT FRI APR 16 1993 THE NATIONAL WEATHER SERVICE IN HARRISBURG HAS ISSUED A FLOOD WARNING EFFECTIVE UNTIL 600 AM EDT FOR PEOPLE IN THE FOLLOWING LOCATION...... IN SOUTH CENTRAL PENNSYLVANIA ...HUNTINGDON COUNTY FLOODING OF SMALL STREAMS CONTINUES COUNTY WIDE AT MIDNIGHT. RAIN HAS ENDED BUT RUNOFF FROM EARLIER HEAVY RAINS WILL CAUSE SMALL STREAMS TO REMAIN OUT OF THEIR BANKS FOR ANOTHER SIX HOURS OR SO. 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. KOWALZYK
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, Apr 16, 9:55 PM EDT, 2 hours before
PAZ007-008-014-170300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WILLIAMSPORT PA 955 PM EDT FRI APR 16 1993 ...TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM EDT... THE TORNADO WATCH REMAINS IN EFFECT FOR ALL OF NORTHCENTRAL PENNSYLVANIA UNTIL 11 PM EDT. THE WATCH INCLUDES THE FOLLOWING COUNTIES...LYCOMING...CLINTON...SULLIVAN...TIOGA... AND BRADFORD. AT 950 PM EDT NATIONAL WEATHER SERVICE RADAR INDICATED A LINE OF STRONG THUNDERSTORMS THAT EXTENDED FROM LOCK HAVEN TO JUST WEST OF HARRISBURG THEN TO HAGERSTOWN MARYLAND. THE THUNDERSTORMS WERE MOVING NORTHEAST AT 20 MPH. AS THESE THUNDERSTORMS MOVE THROUGH NORTHCENTRAL PENNSYLVANIA THE NEXT HOUR OR SO THEY COULD PRODUCE DAMAGING WINDS...LARGE HAIL AND POSSIBLE TORNADOES. VERY HEAVY DOWNPOURS ARE ALSO POSSIBLE WITH THESE THUNDERSTORMS AND THIS COULD PRODUCE FLOODING OF LOWLANDS AND POOR DRAINAGE AREAS. PERSONS IN THE PATH OF THESE THUNDERSTORMS SHOULD REMAIN ALERT AND TAKE COVER IF THREATENING WEATHER APPROACHES. REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS. FJG/KJF
Special weather statement, Apr 16, 9:55 PM EDT, 2 hours before
PAZ007-008-014-170300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WILLIAMSPORT PA 955 PM EDT FRI APR 16 1993 ...TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM EDT... THE TORNADO WATCH REMAINS IN EFFECT FOR ALL OF NORTHCENTRAL PENNSYLVANIA UNTIL 11 PM EDT. THE WATCH INCLUDES THE FOLLOWING COUNTIES...LYCOMING...CLINTON...SULLIVAN...TIOGA... AND BRADFORD. AT 950 PM EDT NATIONAL WEATHER SERVICE RADAR INDICATED A LINE OF STRONG THUNDERSTORMS THAT EXTENDED FROM LOCK HAVEN TO JUST WEST OF HARRISBURG THEN TO HAGERSTOWN MARYLAND. THE THUNDERSTORMS WERE MOVING NORTHEAST AT 20 MPH. AS THESE THUNDERSTORMS MOVE THROUGH NORTHCENTRAL PENNSYLVANIA THE NEXT HOUR OR SO THEY COULD PRODUCE DAMAGING WINDS...LARGE HAIL AND POSSIBLE TORNADOES. VERY HEAVY DOWNPOURS ARE ALSO POSSIBLE WITH THESE THUNDERSTORMS AND THIS COULD PRODUCE FLOODING OF LOWLANDS AND POOR DRAINAGE AREAS. PERSONS IN THE PATH OF THESE THUNDERSTORMS SHOULD REMAIN ALERT AND TAKE COVER IF THREATENING WEATHER APPROACHES. REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS. FJG/KJF
Special weather statement, Apr 16, 11:00 PM EDT, 55 minutes before
PAZ007-008-014-170500- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WILLIAMSPORT PA 1100 PM EDT FRI APR 16 1993 ...TORNADO WATCH HAS EXPIRED FOR NORTHCENTRAL PENNSYLVANIA... AT 1100 PM EDT NATIONAL WEATHER SERVICE RADAR SHOWED SHOWERS AND A FEW THUNDERSTORMS EXTENDING FROM TIOGA COUNTY DOWN THROUGH WILLIAMSPORT AND TO NEAR HARRISBURG. THE LINE CONTINUED TO WEAKEN AS IT MOVED EAST AT AROUND 20 MPH. THE THREAT FOR TORNADOES AND SEVERE WEATHER HAS JUST ABOUT ENDED...HOWEVER SHOWERS AND A FEW THUNDERSTORMS ARE STILL POSSIBLE OVER THE NEXT SEVERAL HOURS. ANY ADDITIONAL RAIN WILL ADD TO THE ALREADY HIGH CREEKS AND STREAMS OVER THE REGION. FJG/KJF
Special weather statement, Apr 16, 11:00 PM EDT, 55 minutes before
PAZ007-008-014-170500- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WILLIAMSPORT PA 1100 PM EDT FRI APR 16 1993 ...TORNADO WATCH HAS EXPIRED FOR NORTHCENTRAL PENNSYLVANIA... AT 1100 PM EDT NATIONAL WEATHER SERVICE RADAR SHOWED SHOWERS AND A FEW THUNDERSTORMS EXTENDING FROM TIOGA COUNTY DOWN THROUGH WILLIAMSPORT AND TO NEAR HARRISBURG. THE LINE CONTINUED TO WEAKEN AS IT MOVED EAST AT AROUND 20 MPH. THE THREAT FOR TORNADOES AND SEVERE WEATHER HAS JUST ABOUT ENDED...HOWEVER SHOWERS AND A FEW THUNDERSTORMS ARE STILL POSSIBLE OVER THE NEXT SEVERAL HOURS. ANY ADDITIONAL RAIN WILL ADD TO THE ALREADY HIGH CREEKS AND STREAMS OVER THE REGION. FJG/KJF
Special weather statement, Apr 16, 11:20 PM EDT, 35 minutes before
PAZ006-008-009-013-170400- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HARRISBURG PA 1120 PM EDT FRI APR 16 1993 ...TORNADO WATCH HAS EXPIRED AS OF 1100 PM... ...FLOOD WARNINGS FOR HUNTINGDON COUNTY UNTIL 1215 AN EDT... ...A FLOOD WATCH IS IN EFFECT FOR THE SOUTH CENTRAL MOUNTAINS UNTIL 4 AM AND THE LOWER AND MIDDLE SUSQUEHANNA VALLEY OVERNIGHT... AT 1100 PM HARRISBURG RADAR SHOWED SHOWERS AND THUNDERSTORMS OVER THE THE SUSQUEHANNA VALLEY FROM NORTH OF WILLIAMSPORT SOUTH INTO CENTAL MARYLAND. THE SHOWERS AND THUNDERSTORMS WERE MOVING TO THE NORTHEAST AT ABOUT 20 TO 25 MPH. SOME OF THE THUNDERSTORMS COULD STILL PRODUCE SOME LOCALLY HEAVY RAIN AND GUSTY WINDS. PERSON LIVING ALONG STREAMS AND CREEKS IN THE REGION SHOULD STILL KEEP AN EYE ON THEM AS THEY COULD RISE RAPIDLY BUT, MOST ARE NOT EXPECTED TO CAUSE ANY SERIOUS FLOODING. FURTHER FLOODING IN LOW LYING AREAS AND POOR DRAINAGE AREAS WILL STILL BE A PROBLEM OVERNIGHT. DO NOT DRIVE OR WALK THROUGH ANY AREAS THAT ARE COVERED BY WATER. IF THREATING WEATHER APPROACHES YOUR AREA MOVE QUICKLY TO A SAFE AREA. STAY TUNED TO NOAA WEATHER RADIO OR YOUR LOCAL TV AND RADIO STATIONS FOR THE LATEST STATEMENTS AND POSSIBLE WARNINGS. HURLEY
Special weather statement, Apr 16, 11:24 PM EDT, 31 minutes before
PAZ006-008-009-013-170400- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HARRISBURG PA 1120 PM EDT FRI APR 16 1993 ...TORNADO WATCH HAS EXPIRED AS OF 1100 PM... ...FLOOD WARNINGS FOR HUNTINGDON COUNTY UNTIL 1215 AN EDT... ...A FLOOD WATCH IS IN EFFECT FOR THE SOUTH CENTRAL MOUNTAINS UNTIL 4 AM AND THE LOWER AND MIDDLE SUSQUEHANNA VALLEY OVERNIGHT... AT 1100 PM HARRISBURG RADAR SHOWED SHOWERS AND THUNDERSTORMS OVER THE THE SUSQUEHANNA VALLEY FROM NORTH OF WILLIAMSPORT SOUTH INTO CENTAL MARYLAND. THE SHOWERS AND THUNDERSTORMS WERE MOVING TO THE NORTHEAST AT ABOUT 20 TO 25 MPH. SOME OF THE THUNDERSTORMS COULD STILL PRODUCE SOME LOCALLY HEAVY RAIN AND GUSTY WINDS. PERSON LIVING ALONG STREAMS AND CREEKS IN THE REGION SHOULD STILL KEEP AN EYE ON THEM AS THEY COULD RISE RAPIDLY BUT, MOST ARE NOT EXPECTED TO CAUSE ANY SERIOUS FLOODING. FURTHER FLOODING IN LOW LYING AREAS AND POOR DRAINAGE AREAS WILL STILL BE A PROBLEM OVERNIGHT. DO NOT DRIVE OR WALK THROUGH ANY AREAS THAT ARE COVERED BY WATER. IF THREATING WEATHER APPROACHES YOUR AREA MOVE QUICKLY TO A SAFE AREA. STAY TUNED TO NOAA WEATHER RADIO OR YOUR LOCAL TV AND RADIO STATIONS FOR THE LATEST STATEMENTS AND POSSIBLE WARNINGS. HURLEY
The office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 16, 8:07 PM EDT | Flash Flood Warning | CTP | Huntingdon | 4 hr |
| Apr 16, 9:52 PM EDT | Flash Flood Warning | CTP | Centre | 12 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.