Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 9, NWS State College, PA
NWS State College, PA issued this severe thunderstorm warning at Mar 9, 1998, 6:41 PM EST for Lancaster County, Pennsylvania. It was in force for 59 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
- Mar 9, 1998, 6:41 PM EST (23:41 UTC)
- Expired
- Mar 9, 1998, 7:40 PM EST
- In force
- 59 min
- Issued by
- NWS State College, PA
- Area
- Whole counties
County Lancaster County, PA
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Mar 9, 6:45 PM EST | Hail 0.88 | Centerville, PA | Nickel sized hail fell in Centerville, west of Lancaster. |
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
Washington/Dulle, VA (KIAD), launched 12:00Z, 11.7 hours before the alert went out and 157 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 534 m above ground
- 0-6 km bulk shear
- 76 kt
- 0-1 km storm-relative helicity
- 529 m²/s²
- 0-3 km storm-relative helicity
- 444 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
387 WUUS01 KCTP 092339 RRA SVRCTP PAC071-100040- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE STATE COLLEGE PA 641 PM EST MON MAR 9 1998 THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 740 PM EST FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTHEASTERN PENNSYLVANIA ...LANCASTER COUNTY NATIONAL WEATHER SERVICE DOPPLER RADAR AT 635 PM INDICATED A SEVERE THUNDERSTORM JUST TO THE WEST OF LANCASTER...IN NORTHWESTERN LANCASTER COUNTY. THE STORM WAS MOVING TO THE NORTHEAST AT 35 MPH. THE STORM WILL MOVE TO NEAR LITITZ AND EPHRATA BETWEEN 650 PM AND 7 PM. SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH... DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE INDOORS AND STAY AWAY FROM WINDOWS. HEAVY RAINS FLOOD ROADS QUICKLY. DONT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. LAMBERT/ONDREJIK
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 Mar 9, 2:00 PM EST, 4 hours 41 minutes earlier.
Area forecast discussion, Mar 9, 2:00 PM EST, 4 hours 41 minutes before
CENTRAL PENNSYLVANIA FORECAST DISCUSSION NATIONAL WEATHER SERVICE STATE COLLEGE PA 145 PM EST MON FEB 09 1998 ...SUGGESTIONS... PIT/PHL...SVR THREAT EAST OF MY CWA. PIT...LK EFFECT SNOW ADV FOR WARREN AND MCKEAN COUNTIES AND INCLUDE THE LAUREL HIGHLANDS IN SNOW ADV FOR LATE TONIGHT (AFT MIDNIGHT) THRU TUESDAY. ...DISCUSSION... RADAR SHOWS BAND OF SHOWERS MOVING NE OUT OF CWA. ACTIVITY WAS ASSOCIATED WITH WINDSHIFT/TROF. STABLE...MILD...DRY AIR HAS BUILD IN BEHIND THIS FEATURE. TO OUR WEST...SHARP COLD FRONT WITH ARCTIC AIR APPROACHING KCLE ATTM. THIS FRONT WILL BRING RENEWED SHOWER ACTIVITY AND BREEZY CONDITIONS FROM W TO E ACROSS FCST/A THIS EVE. AFTER 06Z...SFC-7H WINDS SOMEWHAT ALIGN FROM THE NW ALLOWING FOR THE LK EFFECT MACHINE TO GET INTO GEAR (MULTIBAND). IN ADDITION...8H TEMPS WILL CONTINUE TO FALL INTO TUESDAY NIGHT WITH 8H -22C READINGS SLIDING SE. SUBSIDENCE INVERSION ARND 830MB AND DECENT WIND FIELD THRU MIDDAY TUESDAY SHOULD BRING ADV SNOW AMTS TO LAUREL HIGHLANDS AND PORTIONS OF THE NW MTNS. TUESDAY WILL BE A CLOUDY COLD BREEZY DAY WITH SNOWSHOWERS CONTINUING OVER THE N MTNS AND LAUREL HIGHLANDS. LK EFFECT WILL LIKELY BE ENHANCED WED EVE AS ANOTHER SHRTWV SLIDES SE OUT OF CANADA. WINTHER
The office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 9, 5:47 PM EST | Severe Thunderstorm Warning | CTP | York | 48 min |
| Mar 9, 5:57 PM EST | Severe Thunderstorm Warning | CTP | Lancaster, Lebanon | 43 min |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 1998Every severe thunderstorm warning in 1998
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.