Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 221, NWS State College, PA

August 27, 2000Mifflin County, Union County, Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at Aug 27, 2000, 10:18 PM EDT for Mifflin County, Union County, Pennsylvania. It was in force for 42 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
Aug 27, 2000, 10:18 PM EDT (02:18 UTC)
Expired
Aug 27, 2000, 11:00 PM EDT
In force
42 min
Issued by
NWS State College, PA
Area
Whole counties

Counties Mifflin County, PA, Union County, PA

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 00:00Z, 2.3 hours before the alert went out and 204 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-pSkew-T log-p diagram, Washington/Dulle, VA at 00:00Z on 2000-08-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Washington/Dulle, VA at 00:00Z on 2000-08-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 21 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
880 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
21 m²/s²
0-3 km storm-relative helicity
62 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 280220
SVRCTP
PAC087-119-280300-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE STATE COLLEGE PA
1018 PM EDT SUN AUG 27 2000

THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  UNION COUNTY.
  MIFFLIN COUNTY.

* UNTIL 1100 PM EDT.

* AT 1014 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS FROM 9 MILES SOUTH OF HARTLETON TO 5
  MILES SOUTH OF MCVEYTOWN...MOVING NORTHWEST AT 30 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  BURNHAM AND HARTLETON AT 1025 PM.
  REEDSVILLE AND YEAGERTOWN AT 1030 PM.
  BELLEVILLE AND MILROY AT 1035 PM.

THIS IS A DANGEROUS STORM. STAY INDOORS AWAY FROM WINDOWS. SEVERE 
THUNDERSTORMS CONTAIN DAMAGING WINDS 58 MPH OR STRONGER...OR HAIL 
THREE QUARTERS OF AN INCH OR LARGER.

INTENSE RAIN AND STRONG DAMAGING WINDS ARE LIKELY WITH THIS STORM. 
TAKE COV7ER IN A SUBSTANTIAL SHELTER UNTIL THE STORM PASSES.
$$

DANGELO

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 Aug 27, 9:55 PM EDT, 23 minutes earlier.

Area forecast discussion, Aug 27, 9:55 PM EDT, 23 minutes before
CENTRAL PENNSYLVANIA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE STATE COLLEGE PA
955 PM EDT SUN AUG 27 2000

...WORK ZONES OUT AS PHLADMCTP...

UPPER LO SLOWLY SLIDING TO THE SOUTHEAST WITH SOUTHEASTERLY
MOIST CONVEYOR OVER LOWER SUSQ VALL. WILL EXTEND FFA FOR THE
OVERNIGHT PERIOD. EXPECT ACTIVITY TO SLOWLY DISSIPATE LATE TONIGHT
AS SYSTEM PUSHES SOUTHWARD THROUGH VIRGINIA.

.CTP...FLASH FLOOD WATCH TONIGHT LOWER SUSQ VALLEY.

FITZGERALD

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 27, 8:59 PM EDTSevere Thunderstorm WarningCTPCumberland, Dauphin, York61 min
Aug 27, 8:59 PM EDTSevere Thunderstorm WarningCTPLebanon61 min
Aug 27, 9:12 PM EDTSevere Thunderstorm WarningCTPPerry93 min
Aug 27, 9:33 PM EDTFlash Flood WarningCTPAdams, Cumberland117 min
Aug 27, 10:05 PM EDTSevere Thunderstorm WarningCTPJuniata, Snyder40 min
Aug 27, 11:02 PM EDTSevere Thunderstorm WarningCTPCentre58 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; the sounding from the Mesonet's radiosonde archive.