Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 57, NWS State College, PA
NWS State College, PA issued this severe thunderstorm warning at May 18, 2000, 2:42 PM EDT for McKean County, Potter County, Warren County, Pennsylvania. It was in force for 63 min. 3 reports came from inside the area while it was in force.
The area
The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties, with what was reported inside it.
The facts
- Issued
- May 18, 2000, 2:42 PM EDT (18:42 UTC)
- Expired
- May 18, 2000, 3:45 PM EDT
- In force
- 63 min
- Issued by
- NWS State College, PA
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties McKean County, PA, Potter County, PA, Warren County, PA
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 18, 3:20 PM EDT | Thunderstorm Wind | Lewis Run, PA | Trees down. |
| May 18, 3:30 PM EDT | Thunderstorm Wind | Roulette, PA | Trees down in Roulette and Austin. |
| May 18, 3:51 PM EDT | Thunderstorm Wind | Roulette, PA | Trees 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 nearest sounding before it
Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 6.7 hours before the alert went out and 127 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
- 239 J/kg
- Mixed-layer CIN
- -78 J/kg
- Mixed-layer LCL
- 1133 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 273 m²/s²
- 0-3 km storm-relative helicity
- 349 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS51 KCTP 181844 SVRCTP PAC083-105-123-181945- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE STATE COLLEGE PA 242 PM EDT THU MAY 18 2000 THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... MCKEAN COUNTY. POTTER COUNTY. EASTERN WARREN COUNTY. * UNTIL 345 PM EDT. * AT 232 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM OVER WARREN...OR ABOUT 4 MILES NORTHWEST OF CLARENDON...MOVING EAST AT 40 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... LEWIS RUN AT 300 PM EDT. MOUNT JEWETT AT 305 PM EDT. SMETHPORT AT 315 PM EDT. PORT ALLEGANY AT 325 PM ED.T. AUSTIN AT 340 PM EDT. WIND DAMAGE HAS BEEN REPORTED IN THE CITY OF WARREN WITH THIS STORM. THIS IS A DANGEROUS STORM. STAY INDOORS AWAY FROM WINDOWS. .END/RXR LAT...LON 4190 7909 4173 7912 4157 7788 4184 7784 &
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 State College, PA wrote its last area forecast discussion before this severe thunderstorm warning went out at May 18, 10:00 AM EDT, 4 hours 42 minutes earlier.
Area forecast discussion, May 18, 10:00 AM EDT, 4 hours 42 minutes before
CENTRAL PENNSYLVANIA FORECAST DISCUSSION NATIONAL WEATHER SERVICE STATE COLLEGE PA 1000 AM EDT THU MAY 18 2000 LINE OF TSRA DEVELOPED OVR SUSQ VAL OUT OF LINE OF ACCAS THAT MOVED ACRS AOO TO UNV EARLIER THIS AM. KCCX IS SPITTING OUT SOME HAIL ALERTS BUT WITH VILS AROUND 20. SO WE ARE NOT TOO CONCERNED ATTM AND TSRA WILL BE OUT OF OUR CWA WITHIN THE HOUR. VISIBLE SAT LOOP THIS AM SHOWS MTN WAVE CLDS WITH STRONG LO LVL WINDS COMING OVR THE MTNS TOPS. DESPITE STRONG WINDS THIS AM...ETA AND NGM ALL SHOW 85H WINDS DIMINISHING TO 30 TO 35KTS THIS AFTN AND EVE. 50H WIND TOPPING 50KTS THIS AFTN AND WITH DEWPTS IN THE 60S I AGREE WITH SPC EXPANDING THE SVR WX OUTLOOK INTO OUR W COUNTIES. THERE IS LIKELY TO BE A GREAT DEAL OF SHEAR VORT ACROSS PA BY 06Z FRI...WITH 35KT WINDS AT 85H ALG OUR S BORDER AND LESS THAN 10KTS ACROSS THE N. THE SFC FRONT WILL BE SETTLING INTO THE AREA BETWEEN THE TPK AND I-80 DURG THAT TIME AS WELL...SO A FOCUSING MECHANISM WILL BE AVAILABLE. MODELS STILL DIVERGENT ON FRI AND SAT BUT LATEST AVN NOW SHOWING ANOTHER ROUND OF JUICE HEADED THIS WAY FOR SAT NITE. .CTP...NONE. HEAD
In the hours before
Special weather statement, May 18, 11:00 AM EDT, 3 hours 42 minutes before
PAZ004>006-010>012-017>019-024>028-033>037-041-042-045-046-049>053- 056>059-063>066-180100- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE STATE COLLEGE PA 1100 AM EDT THU MAY 18 2000 ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS IN PARTS OF CENTRAL PENNSYLVANIA LATE THIS AFTERNOON AND TONIGHT... SHOWERS AND THUNDERSTORMS WILL DEVELOP IN AN UNSTABLE AIR MASS THIS AFTERNOON AND EVENING. HEAVY RAIN...SMALL HAIL AND GUSTY WINDS ARE EXPECTED FROM THESE STORMS. MORE ORGANIZED STORMS ARE EXPECTED TO DEVELOP AHEAD OF A COLD FRONT MOVING INTO NORTHWEST PENNSYLVANIA THIS EVENING...THEN TRACK SOUTHEAST TO THE LOWER SUSQUEHANNA RIVER VALLEY BY LATE TONIGHT. A FEW OF THESE STORMS COULD BECOME SEVERE...WITH LOCALIZED WIND GUSTS PAST 50 MPH OR LARGE HAIL. OCCASIONAL SHOWERS AND THUNDERSTORMS WILL CONTINUE ACROSS CENTRAL PENNSYLVANIA ON FRIDAY...HOWEVER THE RISK OF STRONG WINDS OR HAIL WILL DECREASE BY FRIDAY MORNING. LOCALLY HEAVY RAINS COULD DEVELOP LATE TONIGHT...ESPECIALLY ACROSS THE WESTERN HALF OF THE STATE. SKYWARN SPOTTER NETWORKS MAY NEED TO BE ACTIVATED LATE THIS EVENING. .END/DEVOIR/HEAD
Special weather statement, May 18, 11:00 AM EDT, 3 hours 42 minutes before
PAZ004>006-010>012-017>019-024>028-033>037-041-042-045-046-049>053- 056>059-063>066-182100- SEVERE WEATHER OUTLOOK...CORRECTED EXPIRATION TIME NATIONAL WEATHER SERVICE STATE COLLEGE PA 1100 AM EDT THU MAY 18 2000 ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS IN PARTS OF CENTRAL PENNSYLVANIA LATE THIS AFTERNOON AND TONIGHT... SHOWERS AND THUNDERSTORMS WILL DEVELOP IN AN UNSTABLE AIR MASS THIS AFTERNOON AND EVENING. HEAVY RAIN...HAIL AND GUSTY WINDS ARE EXPECTED FROM THESE STORMS. THE STORMS ARE EXPECTED TO DEVELOP AHEAD OF A COLD FRONT MOVING INTO NORTHWEST PENNSYLVANIA LATE THIS AFTERNOON...THEN TRACK SOUTHEAST TO THE LOWER SUSQUEHANNA RIVER VALLEY BY LATE TONIGHT. A FEW OF THESE STORMS COULD BECOME SEVERE...WITH LOCALIZED WIND GUSTS GREATER THAN 50 MPH AND LARGE HAIL. OCCASIONAL SHOWERS AND THUNDERSTORMS WILL CONTINUE ACROSS CENTRAL PENNSYLVANIA ON FRIDAY...HOWEVER THE RISK OF STRONG WINDS OR HAIL WILL DECREASE BY FRIDAY MORNING. LOCALLY HEAVY RAINS COULD DEVELOP LATE TONIGHT...ESPECIALLY ACROSS THE WESTERN HALF OF THE STATE. SKYWARN SPOTTER NETWORKS MAY NEED TO BE ACTIVATED LATE THIS EVENING. .END/ HEAD
Special weather statement, May 18, 1:31 PM EDT, 1 hour 11 minutes before
PAZ004>006-010>012-017>019-024>028-033>037-041-042-045-046-049>053- 056>059-063>066-182100- SEVERE WEATHER OUTLOOK...CORRECTED EXPIRATION TIME NATIONAL WEATHER SERVICE STATE COLLEGE PA 1100 AM EDT THU MAY 18 2000 ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS IN PARTS OF CENTRAL PENNSYLVANIA LATE THIS AFTERNOON AND TONIGHT... SHOWERS AND THUNDERSTORMS WILL DEVELOP IN AN UNSTABLE AIR MASS THIS AFTERNOON AND EVENING. HEAVY RAIN...HAIL AND GUSTY WINDS ARE EXPECTED FROM THESE STORMS. THE STORMS ARE EXPECTED TO DEVELOP AHEAD OF A COLD FRONT MOVING INTO NORTHWEST PENNSYLVANIA LATE THIS AFTERNOON...THEN TRACK SOUTHEAST TO THE LOWER SUSQUEHANNA RIVER VALLEY BY LATE TONIGHT. A FEW OF THESE STORMS COULD BECOME SEVERE...WITH LOCALIZED WIND GUSTS GREATER THAN 50 MPH AND LARGE HAIL. OCCASIONAL SHOWERS AND THUNDERSTORMS WILL CONTINUE ACROSS CENTRAL PENNSYLVANIA ON FRIDAY...HOWEVER THE RISK OF STRONG WINDS OR HAIL WILL DECREASE BY FRIDAY MORNING. LOCALLY HEAVY RAINS COULD DEVELOP LATE TONIGHT...ESPECIALLY ACROSS THE WESTERN HALF OF THE STATE. SKYWARN SPOTTER NETWORKS MAY NEED TO BE ACTIVATED LATE THIS EVENING. .END/ HEAD e
The office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 18, 3:01 PM EDT | Severe Thunderstorm Warning | CTP | Cameron, Elk | 44 min |
| May 18, 3:04 PM EDT | Severe Thunderstorm Warning | CTP | Tioga | 41 min |
| May 18, 3:34 PM EDT | Severe Thunderstorm Warning | CTP | Clinton, Lycoming | 71 min |
| May 18, 3:40 PM EDT | Severe Thunderstorm Warning | CTP | Cameron, Elk | 50 min |
| May 18, 3:43 PM EDT | Severe Thunderstorm Warning | CTP | Potter, Tioga | 47 min |
| May 18, 3:51 PM EDT | Severe Thunderstorm Warning | CTP | Sullivan | 69 min |
| May 18, 4:30 PM EDT | Severe Thunderstorm Warning | CTP | Clinton, Lycoming | 45 min |
| May 18, 4:45 PM EDT | Severe Thunderstorm Warning | CTP | Columbia, Montour, Northumberland | 60 min |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 2000Every severe thunderstorm warning in 2000
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.