Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 98, NWS State College, PA

June 27, 2002Cumberland County, Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at Jun 27, 2002, 6:26 PM EDT for Cumberland County, Pennsylvania. It was in force for 19 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: Jun 27, 2002, 6:26 PM EDT (22:26 UTC)
Expired: Jun 27, 2002, 6:45 PM EDT
In force: 19 min
Issued by: NWS State College, PA
Area: Whole counties

County Cumberland County, PA

The radar

The State College radar (KCCX), 105 km from the middle of the area, began a volume at 22:29 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
Jun 27, 6:36 PM EDT	Thunderstorm Wind 50 E	Newville, PA	Trees were down in Newville.

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
Jun 27, 2:00 PM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 10.4 hours before the alert went out and 126 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 287 J/kg
Mixed-layer CIN: -83 J/kg
Mixed-layer LCL: 1213 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 12 m²/s²
0-3 km storm-relative helicity: 76 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS51 KCTP 272226
SVRCTP
PAC041-272245-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE STATE COLLEGE PA
626 PM EDT THU JUN 27 2002

THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CUMBERLAND COUNTY IN PENNSYLVANIA

* UNTIL 645 PM EDT.

* AT 626 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER WALNUT BOTTOM...OR 5 MILES EAST OF
  SHIPPENSBURG...MOVING SOUTHEAST AT 25 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  PINE GROVE FURNACE SP AT 635 PM.
  MOUNT HOLLY SPRINGS AND BOILING SPRINGS AT 640 PM.

THE MAIN THREAT FROM THIS STORM IS A DAMAGING WIND GUST. EXPECT GUSTS
TO EXCEED 60 MPH. THESE WINDS CAN EASILY KNOCK DOWN TREES AND POWER
LINES...AND CAUSE PROPERTY DAMAGE. LARGE HAIL IS ALSO POSSIBLE. THE
SAFEST PLACE TO BE DURING A SEVERE THUNDERSTORM IS INSIDE A
SUBSTANTIAL SHELTER...AWAY FROM WINDOWS.

$$

LAT...LON 3997 7746 4002 7751 4019 7762 4029 7743
          4029 7716 4032 7692 4026 7691 4022 7685
          4021 7692 4017 7692 4016 7702 4003 7720
          4000 7740

LAMBERT

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 Jun 27, 4:05 PM EDT, 2 hours 21 minutes earlier.

Area forecast discussion, Jun 27, 4:05 PM EDT, 2 hours 21 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE STATE COLLEGE
315 PM THU JUN 27 2002

AREA OF SHOWERS AND THUNDERSTORMS MOVING ACROSS CWA. HEAVY RAIN HAS
BEEN AND WILL CONTINUE TO BE THE MAIN THREAT AS ONLY WEAK TO MDT
SHEAR IN PLACE WITHIN THE WARM MOIST AMS. SOME GUSTY WINDS AND
SMALL HAIL WILL ACCOMPANY SOME OF THE STORMS AS WELL BUT NOTHING
ABOVE SEVERE CRIT HAS BEEN OBSERVED SO FAR THIS AFTN.

TRICKY PART OF FCST IS TIMING OF END OF THE PCPN. AT THIS POINT
EXPECT MOST OF THE SIG PCPN TO HAVE MOVED SOUTH AND EAST OF NW AND
CENTRAL PA BY 00Z. WITH LINGERING TSTMS OVER MIDDLE AND LOWER SUSQ
INTO MID EVENING. WILL KEEP SLIGHT CHANCE IN THE NW AND CHANCE POPS
SERN HALF OF CWA FOR PCPN THIS EVENING.

FRI AND WEEKEND CONTINUE TO LOOK NICE...MUCH DRIER AND A BIT COOLER
TO START...THEN WARMING UP BY SUN. EARLY NEXT WEEK WILL PUT US BACK
IN THE SOUP HEAT AND HUMIDITY WISE.

.CTP...SEVERE THUNDERSTORM WATCH #479 TIL 8PM FOR ALL OF CENTRAL PA.

GARTNER

In the hours before

Special weather statement, Jun 27, 1:45 PM EDT, 4 hours 41 minutes before

PAZ004>006-010>012-017>019-024>028-033>037-041-042-045-046-049>053-
056>059-063>066-280000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
145 PM EDT THU JUN 27 2002

...A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 800 PM EDT THIS
EVENING FOR THE FOLLOWING COUNTIES IN CENTRAL PENNSYLVANIA...

MCKEAN...MONTOUR...YORK...SOMERSET...FRANKLIN...LANCASTER...
CUMBERLAND...BEDFORD...LEBANON...DAUPHIN...PERRY...JUNIATA...
HUNTINGDON...BLAIR...MIFFLIN...SNYDER...SCHUYLKILL...SOUTHERN
CENTRE...SOUTHERN CLINTON...WARREN...TIOGA...NORTHERN LYCOMING...
FULTON...NORTHUMBERLAND...CLEARFIELD...NORTHERN CENTRE...SOUTHERN
LYCOMING...COLUMBIA...CAMERON...CAMBRIA...ADAMS...POTTER...ELK...
NORTHERN CLINTON...SULLIVAN AND UNION.

DEVOIR

Local storm report, Jun 27, 6:03 PM EDT, 23 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE STATE COLLEGE, PA
603 PM EDT THU JUN 27 2002

TIME(EDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

1245 PM    BELLEFONTE                PA   WIND DAMAGE
06/27/02   CENTRE                         TREES DOWN REPORTED BY 911
                                          DISPATCHER

1235 PM    BURNSIDE TOWNSHIP         PA   WIND DAMAGE
06/27/02   CLEARFIELD                     TREES DOWN REPORTED BY 911
                                          DISPATCHER

0405 PM    CENTRE HALL               PA   WIND DAMAGE
06/27/02   CENTRE                         NUMEROUS WIRES AND TREEES
                                          DOWN REPORTED BY EMA

0202 PM    CURWENSVILLE              PA   FLASH FLOODS
06/27/02   CLEARFIELD                     STREETS CLOSED DUE TO
                                          FLOODING REPORTED BY 911
                                          DISPATCHER

0545 PM    SHIREMANSTOWN             PA   62 MPH TSTM WIND GUST
06/27/02   CUMBERLAND

0545 PM    GREENCASTLE               PA   .75 INCH HAIL
06/27/02   FRANKLIN                       REPORTED BY
SPOTTER

BG

The office that day

Everything else NWS State College, PA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 27, 12:00 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Clearfield	60 min
Jun 27, 2:42 PM EDT	Flash Flood Warning	CTP	Clearfield	3 hr
Jun 27, 3:27 PM EDT	Severe Thunderstorm Warning	CTP	Centre	63 min
Jun 27, 4:06 PM EDT	Severe Thunderstorm Warning	CTP	Potter	54 min
Jun 27, 4:12 PM EDT	Severe Thunderstorm Warning	CTP	Snyder, Union	63 min
Jun 27, 5:34 PM EDT	Severe Thunderstorm Warning	CTP	Adams, Franklin	56 min
Jun 27, 5:40 PM EDT	Severe Thunderstorm Warning	CTP	Lebanon	65 min
Jun 27, 6:28 PM EDT	Severe Thunderstorm Warning	CTP	York	62 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2002 Every severe thunderstorm warning in 2002

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.