Alert archive / Pennsylvania / Flash Flood Warnings in 1994
Flash Flood Warning 39, NWS State College, PA
NWS State College, PA issued this flash flood warning at Sep 26, 1994, 4:51 PM EDT for Dauphin County, Pennsylvania. It was in force for 3 hr.
The area
The counties it named.
The facts
- Issued
- Sep 26, 1994, 4:51 PM EDT (20:51 UTC)
- Expired
- Sep 26, 1994, 8:00 PM EDT
- In force
- 3 hr
- Issued by
- NWS State College, PA
- Area
- Whole counties
County Dauphin County, PA
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 12:00Z, 8.9 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
- 177 J/kg
- Mixed-layer CIN
- -24 J/kg
- Mixed-layer LCL
- 556 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 51 m²/s²
- 0-3 km storm-relative helicity
- 133 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KCTP 262051 FFWCTP PAC043-270000- BULLETIN - EBS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE STATE COLLEGE PA 451 PM EDT MON SEP 26 1994 THE NATIONAL WEATHER SERVICE IN STATE COLLEGE HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 800 PM EDT FOR PEOPLE IN THE FOLLOWING LOCATIONS...... IN PENNSYLVANIA ...NORTHERN DAUPHIN COUNTY AT 445 PM DOPPLER RADAR IN STATE COLLEGE INDICATED A LINE OF THUNDERSTORMS WITH HEAVY RAINFALL FROM MUNCY SOUTH TO MECHANICSBURG. THE LINE WAS NEARLY STATIONARY. EMERGENCY MANAGEMENT OFFICALLS HAVE REPORTED FLOODING IN THE MILLERSBURG AREA DURING THE PAST HOUR. DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY. MOVE TO HIGHER GROUND.
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, Sep 26, 2:48 PM EDT, 2 hours 3 minutes before
PAZ066-261950- SPECIAL WEATHER STATEMENT - NATIONAL WEATHER SERVICE STATE COLLEGE PA 248 PM EDT MON SEP 26 1994 ...SHORT LIVED WATER SPOUT ON THE LOWER SUSQUEHANNA RIVER... A REPORT FROM THE POWER PLANT AT PEACHBOTTOM IN LANCASTER COUNTY INDICATES THAT A SHORT LIVED WATER SPOUT DROPPED OUT OF A RAIN SHOWER THAT WAS PASSING THROUGH THE AREA. POWER PLANT WITNESSES DESCRIBE A FUNNEL THAT DROPPED OUT OF THE CLOUD AND MADE CONTACT WITH THE WATER SURFACE...THEN MOVED APPROXIMATELY 1000 YARDS UP RIVER BEFORE LIFTING BACK INTO THE CLOUDS AND DISSIPATING. THEY REPORT THAT THE WATER SURFACE WAS CHURNED UP AROUND THIS FEATURE AND ALSO THAT NO DAMAGE WAS DONE. STATE COLLEGE DOPPLER RADAR SHOWED ONLY WEAK TO MODERATE RAIN SHOWER ACTIVITY IN THE VICINITY OF PEACHBOTTOM AT THE TIME OF THE REPORT. DOPPLER PRODUCTS FROM THE RADAR SHOWED NO EVIDENCE OF A TORNADO. IT IS LIKELY THE FUNNEL WAS A WEAK SHORT LIVED LOCAL PHENOMENA THAT IS NOT UNCOMMON DURING UNSTABLE ATMOSPHERIC CONDITIONS. THESE SYSTEMS SELDOM LAST MORE THAN A FEW MINUTES AND ALMOST NEVER DO ANY DAMAGE. CONDITIONS DO FAVOR MORE SHOWERS AND THUNDERSTORMS FOR THE REMAINDER OF THE AFTERNOON OVER EASTERN PENNSYLVANIA. THE PRIMARY THREAT FOR THE REST OF THE AFTERNOON AND NIGHT TIME HOURS IS LIKELY TO BE HEAVY RAIN. THESE WEAK WATER SPOUTS ARE USUALLY SHORT LIVED. THEY HAVE HOWEVER...ON OCCASION TOUCHED THE GROUND AND CAUSED DAMAGE. BECAUSE OF THIS POSSIBILITY...YOU SHOULD SEEK A SAFE INDOOR SHELTER WHEN THESE FUNNELS ARE OBSERVED. LA CORTE
Special weather statement, Sep 26, 4:01 PM EDT, 50 minutes before
PAZ012-018>019-025>028-034>037-041-042-045-046-049>053- 056>059-063>066-262100- SPECIAL WEATHER STATEMENT - NATIONAL WEATHER SERVICE STATE COLLEGE PA 401 PM EDT MON SEP 26 1994 ...FLASH FLOOD WATCH THROUGH TUESDAY MORNING FOR LANCASTER...LEBANON AND SCHUYKILL COUNTIES... ...A FLOOD WARNING FOR SMALL STREAMS AND POOR DRAINAGE AREAS IS IN EFFECT FOR COLUMBIA COUNTY.... AT 355 PM THE STATE COLLEGE WEATHER SERVICE DOPPLER RADAR WAS INDICATING SEVERAL BANDS OF SHOWERS AND THUNDERSTORMS EXTENDING NORTH-SOUTH ACROSS CENTRAL AND EASTERN PENNSYLVANIA. ONE LINE OF THUNDERSTORMS EXTENDED FROM MILLERSBURG...SOUTH TO CAMP HILL THEN FURTHER SOUTH TO NEAR GETTYSBURG. ANOTHER BAND OF SHOWERS AND THUNDERSTORMS EXTENDED FROM BATH...NEW YORK SOUTH THROUGH THE STATE COLLEGE AREA AND THEN SOUTH TO THE LARUEL HIGHLANDS THESE SHOWERS AND THUNDERSTORMS ARE MOVING NORTH AT 30 MPH. IF YOU ARE IN A FLOOD PRONE AREA...YOU SHOULD MONITOR WATER LEVELS AND BE PREPARED TO MOVE TO HIGHER GROUND...SHOULD FLOOD WATERS THREATEN. SOME OF THESE STORMS MAY CONTAIN SMALL HAIL...GUSTY WIND...DEADLY LIGHTNING AND VERY HEAVY RAIN CAPABLE OF FLOODING LOW LYING AND POOR DRAINAGE AREAS.
The office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 25, 9:07 PM EDT | Severe Thunderstorm Warning | CTP | Warren | 38 min |
| Sep 25, 9:48 PM EDT | Severe Thunderstorm Warning | CTP | Warren | 57 min |
| Sep 26, 3:10 PM EDT | Severe Thunderstorm Warning | CTP | Bedford | 50 min |
| Sep 26, 3:45 PM EDT | Flash Flood Warning | CTP | Columbia | 3 hr |
| Sep 26, 4:36 PM EDT | Severe Thunderstorm Warning | CTP | Dauphin, Northumberland | 54 min |
| Sep 26, 4:36 PM EDT | Severe Thunderstorm Warning | CTP | Snyder | 54 min |
| Sep 26, 6:22 PM EDT | Flash Flood Warning | CTP | Montour, Northumberland | 3 hr |
| Sep 26, 6:46 PM EDT | Tornado Warning | CTP | Cambria, Clearfield | 44 min |
| Sep 26, 7:08 PM EDT | Tornado Warning | CTP | Clearfield | 52 min |
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.