Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 170, NWS State College, PA

June 24, 2000Warren County, Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at Jun 24, 2000, 6:39 PM EDT for Warren County, Pennsylvania. It was in force for 21 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jun 24, 2000, 6:39 PM EDT (22:39 UTC)
Expired: Jun 24, 2000, 7:00 PM EDT
In force: 21 min
Issued by: NWS State College, PA
Area: Whole counties

County Warren County, PA

The radar

The Buffalo radar (KBUF), 134 km from the middle of the area, began a volume at 22:42 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.

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 10.7 hours before the alert went out and 133 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1537 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 59 m²/s²
0-3 km storm-relative helicity: 85 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

000 
WUUS51 KCTP 242240
SVRCTP
PAC123-242300-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE STATE COLLEGE PA
639 PM EDT SAT JUN 24 2000

THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN WARREN COUNTY.

* UNTIL 700 PM EDT.

* AT 631 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 6 MILES NORTHEAST OF WARREN...MOVING EAST AT 25
  MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
   ALLEGHENY RESEVOIR AT 645.

THIS IS A DANGEROUS STORM. STAY INDOORS AWAY FROM WINDOWS.

$$
GRUMM/EVANS

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 24, 2:30 PM EDT, 4 hours 9 minutes earlier.

Area forecast discussion, Jun 24, 2:30 PM EDT, 4 hours 9 minutes before

CENTRAL PENNSYLVANIA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE STATE COLLEGE PA
230 PM EDT SAT JUN 24 2000

WM FNT SOMEWHERE ALONG ALLEGHENY FNT ATTM...WITH QUITE A DWPT GRAD
FM BFD-ERI AND JST-PIT. DWPTS GETTING HI IN LWR SUSQ AS WELL.
SRLY/SWRLY FLO AT SFC SHUD START TO ADVECT ALL THAT JUICE INTO REST OF
FA SHORTLY. THUNDER EARLIER UP ALONG LE SHORELINE STAYED AWAY FM
FA...BUT NEW ACTIVITY ON KCLE RDR BEARS WATCHING AS IT IS FEEDING
OFF THE BEST DWPTS AND IN THE REGION OF DECELERATION OF A GOOD 850
JETLET. HI CLD SHIELD IN ERN ZNS MOVG AWAY AND SHUD HELP TO POKE LWR
SUSQ INTO THE NEAR 90 RANGE FCSTD EARLIER TDY.

ETA SEEMS TO HAVE MISSED OUT ON THE CNVCTN THAT IS OCCURRING TO OUR
WEST AND MUST BE QUESTIONED THIS EVENING. NGM CONSISTENT...AND MOST
OF FCST BASED THEREIN. AVN SLIGHTLY SLOER WITH FNT TO COME MON
MORN...AND WL TRY TO REFLECT THIS IN FCST. WARM SECTOR ADVANCING
INTO FA AND WL BE HERE THRU REST OF THE WEEKEND.

GOTTA AGREE W/BGM (THNX FOR COORD RAY) AND POTENTIAL FOR SOME HEAVY
RAINERS W/REPEATING TSRA TMRW...AND TIP MY HAT TO PREV SHIFT WHO
POINTED OUT POTENTIAL FOR SUPERCELL DVLPMNT IN SERN ZNS TMRW. WL INCLUDE
WORDING TO HEIGHTEN AWARENESS ATTM...BUT DO NOT SEE ENUF SUPPORT FOR
FFA YET...AND DO NOT WISH TO HOIST A SVR FLAG WITHOUT MORE SUPPORT
FM SPC. ETA SVR PARAMS ARE HIGHLY INFLUENCED BY THEIR SFC INITS.
MUGGINESS/HAZINESS WL ALSO APPEAR IN WORDING. TEMPS NOT BAD FM
MOS...AND HV FOLLOWED CLOSELY.

XTNDD: BIG HUDSON BAY VORTEX WL JUST ROTATE IN PLACE AND KEEP A
GENERAL TROF OV THE GLS AND MIDWEST THRU FCST PD. THIS IS A
PREDOMINANTLY WET PTRN FOR US...AND MRF CORRESPONDINGLY WET. SFC FNT
THAT SHUD COME IN SUN NITE/ERLY MON LOOKS TO LAY OUT E-W ALONG
MASON-DIXON LINE AND STAY THERE FOR THE PD. CAN/T SEE THAT ANY ONE
DAY WL BE DRIER THAN THE REST. MORE RAIN! WL KEEP THIS TREND GOING.
TEMPS WL FOLLOW ALONG W/FMR GUID FOR MOST PT...XCPT TO DROP NUMS A
CAT OR SO IN LATER PDS SLIGHTLY DUE TO PERSISTENT COOL PTRN OF CLDS
AND REPEATED SHRA.

.CTP...NONE.

DANGELO

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 24, 7:06 PM EDT	Severe Thunderstorm Warning	CTP	McKean	54 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2000 Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.