Alert archive / Pennsylvania / Tornado Warnings in 1994
Tornado Warning 9, NWS State College, PA
NWS State College, PA issued this tornado warning at Jul 21, 1994, 8:19 PM EDT for York County, Pennsylvania. It was in force for 41 min.
The area
The counties it named.
The facts
- Issued
- Jul 21, 1994, 8:19 PM EDT (00:19 UTC)
- Expired
- Jul 21, 1994, 9:00 PM EDT
- In force
- 41 min
- Issued by
- NWS State College, PA
- Area
- Whole counties
County York County, PA
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 00:00Z, 0.3 hours before the alert went out and 122 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
- 1239 J/kg
- Mixed-layer CIN
- -1 J/kg
- Mixed-layer LCL
- 763 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 116 m²/s²
- 0-3 km storm-relative helicity
- 116 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.4
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KHAR 220019 RRA TORHAR PAC133-220100- BULLETIN - EBS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE HARRISBURG PA 819 PM EDT THU JUL 21 1994 THE NATIONAL WEATHER SERVICE IN HARRISBURG HAS ISSUED A TORNADO WARNING EFFECTIVE UNTIL 900 PM EDT FOR PEOPLE IN THE FOLLOWING LOCATION...... IN SOUTH CENTRAL PENNSYLVANIA ...NORTHERN YORK COUNTY YODK COUNTY EOC REPORTS TWO TORNADOES IN DOVER TOWNSHIP AND THE BROUGH OF DOVER TO THE WEST OF RT 74. ROOFS OFF A NUMBER OF HOMES. IF YOU LIVE IN A HOME OR APARTMENT...SEEK SHELTER IN THE INNERMOST PORTION OF THE BUILDING ON THE LOWEST FLOOR. GET TO A BASEMENT IF ONE IS AVAILABLE. AVOID WINDOWS AND PROTECT YOUR BODY FROM FLYING DEBRIS WITH CUrSHIONS...BLANKETS...OR PILLOWS. NNNN
What forecasters said that day
The local office's own words before this tornado 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, Jul 21, 4:00 PM EDT, 4 hours 19 minutes before
PAZ018-019-027-028-035-036-049>053-056>058-063>066-212200 SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE HARRISBURG PA 400 PM EDT THU JUL 21 1994 ...FLASH FLOOD WATCH FOR THE SOIUTHCENTRAL AND CENTRAL MOUNTAINS UNTIL 400 AM FRIDAY MORNING... AT 400 PM HARRISBURG WEATHER RADAR SHOWED SHOWERS AND THUNDERSTORMS MOVING NORTH THROUGH THE CENTRAL MOUNTIANS AND THE SUSQUEHANNA VALLEY. ;ONE OF THE STORMS THAT PASSED THROUGH DAUPHIN COUNTY AROUND 3 PM HAD A WIND GUST TO 63 MPH.MOST OF THE HEAVIEST STORMS AT THE PRESENT ARE IN THE SUSQUEHANNA VALLEY. ANY OF THE STORMS THROUGH THE EVENING HOURS COULD PRODUCE STRONG GUSTY WINDS ANDLOCALLY HEAVY RAIN. THE RAIN COULD CAUSE FLOODING OF LOW LYING AND POOR DRANIAGEAREAS. A FLASH FLOOD WATCH MEAN FLOODING IS A POSSIBILITY...NOT A CERTAINTY. BE PREPARED TO TAKE QUICK ACTION IF A WARNING IS ISSUED OR FLOODING IS OBSERVED. WHEN THUNDERSTORMS APPROACH...TAKE SHELTER IN A STURDY BUILDING. DO NOT USE TELEPHONES OR ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY. IF YOU ARE DRIVING AND ENCOUNTER ANY STANDING OR FLOWING WATER ACROSS ROADS...PLEASE AVOID THEM AND MOVE TO HIGHER GROUND. HURLEY
Special weather statement, Jul 21, 8:00 PM EDT, 19 minutes before
PAZ018-019-027-028-035-036-049>053-056>058-063>066-220300 SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE HARRISBURG PA 800 PM EDT THU JUL 21 1994 ...FLASH FLOOD WATCH FOR THE SOUTHCENTRAL AND CENTRAL MOUNTAINS OF PA UNTIL 400 AM FRIDAY MORNING... AT 800 PM HARRISBURG WEATHER RADAR CONTINUED TO SHOW SHOWERS AND THUNDERSTORMS MOVING NORTH THROUGH THE SUSQUEHANNA VALLEY. MOST OF THE HEAVIEST STORMS AT THE PRESENT ARE IN THE LOWER SUSQUEHANNA VALLEY. ANY OF THE STORMS THROUGH THE EVENING HOURS COULD PRODUCE STRONG GUSTY WINDS AND LOCALLY HEAVY RAIN. THE RAIN COULD CAUSE FLOODING OF LOW LYING AND POOR DRANIAGE AREAS. THE ACTIVITY IS MOVING TO THE NORTHEAST AT ABOUT 30 TO 35 MPH. A FLASH FLOOD WATCH MEAN FLOODING IS A POSSIBILITY...NOT A CERTAINTY. BE PREPARED TO TAKE QUICK ACTION IF A WARNING IS ISSUED OR FLOODING IS OBSERVED. WHEN THUNDERSTORMS APPROACH...TAKE SHELTER IN A STURDY BUILDING. DO NOT USE TELEPHONES OR ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY. IF YOU ARE DRIVING AND ENCOUNTER ANY STANDING OR FLOWING WATER ACROSS ROADS...PLEASE AVOID THEM AND MOVE TO HIGHER GROUND. DO NOT DRIVE ACROSS ROADWAYS THAT ARE COVERED WITH WATER. HURLEY
Nearby
Tornado Warnings in Pennsylvania, 1994Every tornado warning in 1994Tornadoes 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.