Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 71, NWS Binghamton, NY
NWS Binghamton, NY issued this severe thunderstorm warning at Jul 9, 1999, 11:26 PM EDT for Pike County, Pennsylvania. It was in force for 64 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jul 9, 1999, 11:26 PM EDT (03:26 UTC)
- Expired
- Jul 10, 1999, 12:30 AM EDT
- In force
- 64 min
- Issued by
- NWS Binghamton, NY
- Area
- Whole counties
County Pike County, PA
The radar
The Binghamton radar (KBGM), 125 km from the middle of the area, began a volume at 03:30 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 10, 12:00 AM EDT | Thunderstorm Wind | Dingmans Ferry, PA | Several trees and powerlines blown down. |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 9, 10:00 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Brookhaven, NY (KOKX), launched 00:00Z, 3.4 hours before the alert went out and 189 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
- 1694 m above ground
- 0-6 km bulk shear
- 67 kt
- 0-1 km storm-relative helicity
- 314 m²/s²
- 0-3 km storm-relative helicity
- 509 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Binghamton, NY wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 9, 2:50 PM EDT, 8 hours 36 minutes earlier.
Area forecast discussion, Jul 9, 2:50 PM EDT, 8 hours 36 minutes before
AREA FORECAST DISCUSSION...UPDATE NATIONAL WEATHER SERVICE BINGHAMTON NY 250 PM EDT FRI JUL 9 1999 WARM FRONT CONTINUING TO MOVE NE THIS AFT ACROSS WESTERN NY GENERATING SOME -SHRA ACTIVITY MOVING EAST ACROSS SOUTHERN NY. SFC LOW OVER GTLAKES IS PROGGED TO MOVE EAST ACROSS SOUTHERN ONTARIO INTO QUEBEC ON SAT DRAGGING COLD FRONT THRU CWA BETWEEN 12Z-18Z. MAIN PROB TONIGHT IS ANY POTENTIAL SVR WX. BEST CHC APPEARS TO BE ACROSS WESTERN NY AND PSBLY AFFECTING OUR WESTERN ZONES. STILL A QUESTION OF HOW MUCH DESTABILIZATION WILL OCCUR ACROSS OUR AREA AS CLEARING HAS MADE IT TO WESTERN NY/PA BORDER. BEST AXIS OF INSTABILITY PER ETA ACROSS WESTERN NY INTO OHIO VALLEY AT 0Z WEAKENS AS IT MOVES INTO CENTRAL NY BY 06Z. ETA AND AVN AGREE ON DEVELOPING SQUALL LINE ACROSS SW NY INTO NW PA 21Z-00Z AND WEAKENING AS IT MOVES EAST INTO OUR AREA 00Z-03Z. OVERALL...BEST PSBL HEATING AND DYNAMICS ARE NOT IN SYNC BUT AREA WILL HAVE TO BE WATCHED...ESP WESTERN ZONES THIS EVENING. LOOKS LIKE WELL SEE A BREAK AFTER THIS ROUND OF CONVECTION TWD 06Z BEFORE COLD FRONT AND GENERAL AREA OF WEAK LIFT AFFECT AREA BY MORNING. THIS AREA SPLITS NORTH AND SOUTH WITH SUBSIDENCE AND SOME GRADUAL CLEARING TAKING PLACE AFTER FROPA. .BGM...NONE. JML
In the hours before
Special weather statement, Jul 9, 6:44 PM EDT, 4 hours 42 minutes before
NYZ022-023-044-056-PAZ039-047-043-038-NYZ055-024-025-015-PAZ044- NYZ017-016-100400- SPECIAL WEATHER STATEMENT...CORRECTED NATIONAL WEATHER SERVICE BINGHAMTON NY 644 PM EDT FRI JUL 09 1999 ...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 1200 AM EDT... THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WATCH EFFECTIVE UNTIL 1200 AM EDT FOR THE FOLLOWING COUNTIES: STEUBEN NY... SCHUYLER NY... CORTLAND NY... BROOME NY... SUSQUEHANNA PA... LUZERNE PA... WYOMING PA... BRADFORD PA... TIOGA NY... CHEMUNG NY... TOMPKINS NY... YATES NY... LACKAWANNA PA... CAYUGA NY... SENECA NY... SEVERE THUNDERSTORMS PRODUCE LARGE DAMAGING HAIL 3/4 OF AN INCH IN DIAMETER OR LARGER...DAMAGING THUNDERSTORM WINDS OF 58 MPH OR GREATER AND DANGEROUS CLOUD TO GROUND LIGHTNING. REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. PEOPLE IN THESE AREAS SHOULD WATCH FOR THREATENING WEATHER CONDITIONS AND LISTEN FOR FURTHER STATEMENTS AND POSSIBLE WARNINGS. TUNE TO NOAA WEATHER RADIO OR THE LOCAL MEDIA FOR FURTHER STATEMENTS OR POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE IN BINGHAMTON. ONCE AGAIN A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 800 PM EDT.
Special weather statement, Jul 9, 6:44 PM EDT, 4 hours 42 minutes before
NYZ022-023-044-056-PAZ039-047-043-038-NYZ055-024-025-015-PAZ044- NYZ017-016-100400- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BINGHAMTON NY 644 PM EDT FRI JUL 09 1999 ...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 800 PM EDT... THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WATCH EFFECTIVE UNTIL 1200 AM EDT FOR THE FOLLOWING COUNTIES: STEUBEN NY... SCHUYLER NY... CORTLAND NY... BROOME NY... SUSQUEHANNA PA... LUZERNE PA... WYOMING PA... BRADFORD PA... TIOGA NY... CHEMUNG NY... TOMPKINS NY... YATES NY... LACKAWANNA PA... CAYUGA NY... SENECA NY... SEVERE THUNDERSTORMS PRODUCE LARGE DAMAGING HAIL 3/4 OF AN INCH IN DIAMETER OR LARGER...DAMAGING THUNDERSTORM WINDS OF 58 MPH OR GREATER AND DANGEROUS CLOUD TO GROUND LIGHTNING. REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. PEOPLE IN THESE AREAS SHOULD WATCH FOR THREATENING WEATHER CONDITIONS AND LISTEN FOR FURTHER STATEMENTS AND POSSIBLE WARNINGS. TUNE TO NOAA WEATHER RADIO OR THE LOCAL MEDIA FOR FURTHER STATEMENTS OR POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE IN BINGHAMTON. ONCE AGAIN A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 800 PM EDT.
Special weather statement, Jul 9, 6:44 PM EDT, 4 hours 42 minutes before
NYZ022-023-044-056-PAZ039-047-043-038-NYZ055-024-025-015-PAZ044- NYZ017-016-100400- SPECIAL WEATHER STATEMENT...CORRECTED NATIONAL WEATHER SERVICE BINGHAMTON NY 644 PM EDT FRI JUL 09 1999 ...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 1200 AM EDT... THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WATCH EFFECTIVE UNTIL 1200 AM EDT FOR THE FOLLOWING COUNTIES: STEUBEN NY... SCHUYLER NY... CORTLAND NY... BROOME NY... SUSQUEHANNA PA... LUZERNE PA... WYOMING PA... BRADFORD PA... TIOGA NY... CHEMUNG NY... TOMPKINS NY... YATES NY... LACKAWANNA PA... CAYUGA NY... SENECA NY... SEVERE THUNDERSTORMS PRODUCE LARGE DAMAGING HAIL 3/4 OF AN INCH IN DIAMETER OR LARGER...DAMAGING THUNDERSTORM WINDS OF 58 MPH OR GREATER AND DANGEROUS CLOUD TO GROUND LIGHTNING. REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. PEOPLE IN THESE AREAS SHOULD WATCH FOR THREATENING WEATHER CONDITIONS AND LISTEN FOR FURTHER STATEMENTS AND POSSIBLE WARNINGS. TUNE TO NOAA WEATHER RADIO OR THE LOCAL MEDIA FOR FURTHER STATEMENTS OR POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE IN BINGHAMTON. ONCE AGAIN A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 800 PM EDT.
Special weather statement, Jul 9, 9:49 PM EDT, 1 hour 37 minutes before
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</html>The office that day
Everything else NWS Binghamton, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 9, 8:18 PM EDT | Severe Thunderstorm Warning | BGM | Seneca, Yates | 62 min |
| Jul 9, 8:33 PM EDT | Severe Thunderstorm Warning | BGM | Schuyler | 62 min |
| Jul 9, 8:55 PM EDT | Tornado Warning | BGM | Schuyler, Seneca, Tompkins | 60 min |
| Jul 9, 8:57 PM EDT | Severe Thunderstorm Warning | BGM | Cortland | 63 min |
| Jul 9, 9:13 PM EDT | Severe Thunderstorm Warning | BGM | Chemung, Tioga | 62 min |
| Jul 9, 9:21 PM EDT | Severe Thunderstorm Warning | BGM | Chenango, Cortland | 64 min |
| Jul 9, 9:39 PM EDT | Severe Thunderstorm Warning | BGM | Broome | 61 min |
| Jul 9, 9:43 PM EDT | Severe Thunderstorm Warning | BGM | Onondaga | 62 min |
| Jul 9, 10:02 PM EDT | Severe Thunderstorm Warning | BGM | Delaware | 63 min |
| Jul 9, 10:43 PM EDT | Severe Thunderstorm Warning | BGM | Sullivan | 62 min |
| Jul 9, 11:38 PM EDT | Severe Thunderstorm Warning | BGM | Sullivan | 47 min |
| Jul 9, 8:40 PM EDT | Severe Thunderstorm Warning | BGM | Bradford | 65 min |
| Jul 9, 9:59 PM EDT | Severe Thunderstorm Warning | BGM | Bradford | 61 min |
| Jul 9, 10:10 PM EDT | Severe Thunderstorm Warning | BGM | Susquehanna | 65 min |
| Jul 9, 10:16 PM EDT | Severe Thunderstorm Warning | BGM | Wayne | 64 min |
| Jul 9, 10:22 PM EDT | Severe Thunderstorm Warning | BGM | Luzerne, Wyoming | 63 min |
| Jul 9, 10:47 PM EDT | Severe Thunderstorm Warning | BGM | Lackawanna | 48 min |
| Jul 9, 11:14 PM EDT | Severe Thunderstorm Warning | BGM | Susquehanna, Wayne | 46 min |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 1999Every severe thunderstorm 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.