Alert archive / Pennsylvania / Flash Flood Warnings in 1998

Flash Flood Warning 21, NWS State College, PA

January 8, 1998Mifflin County, Pennsylvania

NWS State College, PA issued this flash flood warning at Jan 8, 1998, 2:02 PM EST for Mifflin County, Pennsylvania. It was in force for 4 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jan 8, 1998, 2:02 PM EST (19:02 UTC)
Expired
Jan 8, 1998, 6:05 PM EST
In force
4 hr
Issued by
NWS State College, PA
Area
Whole counties

County Mifflin County, PA

The radar

The State College radar (KCCX), 48 km from the middle of the area, began a volume at 19:05 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

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 7.0 hours before the alert went out and 181 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, Phillips Aaf/Abe, MD at 12:00Z on 1998-01-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 55 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Phillips Aaf/Abe, MD at 12:00Z on 1998-01-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 326 square meters per square second.1939587897Sfc1 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
55 J/kg
Mixed-layer CIN
-67 J/kg
Mixed-layer LCL
533 m above ground
0-6 km bulk shear
64 kt
0-1 km storm-relative helicity
326 m²/s²
0-3 km storm-relative helicity
333 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 
TTAA00 KCTP 081907 RRA
FFWCTP
PAC009-013-027-035-057-061-087-082305-

BULLETIN - EAS ACTIVATION REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE STATE COLLEGE PA
202 PM EST THU JAN 8 1998

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* FLOOD WARNING FOR
  CLINTON COUNTY
  CENTRE COUNTY
  BLAIR COUNTY
  HUNTINGDON COUNTY
  MIFFLIN COUNTY
  BEDFORD COUNTY
  FULTON COUNTY

* UNTIL 605 PM EST


* RAINFALL OF 1 TO 2 INCHES FELL ACROSS MUCH OF THE AREA IN THE
  PAST 24 HOURS.  ADDITIONAL HEAVY RAIN WILL CROSS THE AREA
  THROUGH LATE AFTERNOON.

MANY SMALL STREAMS ARE RUNNING AT BANKFULL AND ANY ADDED HEAVY
RAIN SHOULD CAUSE FLOODING.  SMALL STREAMS AND ROADWAYS MAY FLOOD
QUICKLY AS ADDITIONAL RAIN MOVES EAST ACROSS THE AREA.


DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE WATER COVERS THE
ROADWAY.  THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO
CROSS SAFELY.  VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED
QUICKLY.  MOVE TO HIGHER GROUND.

DUNHAM

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 7, 10:36 PM ESTFlash Flood WarningCTPWarren7 hr
Jan 8, 2:42 AM ESTFlash Flood WarningCTPSomerset6 hr
Jan 8, 5:55 AM ESTFlash Flood WarningCTPWarren3 hr
Jan 8, 7:39 AM ESTSevere Thunderstorm WarningCTPAdams, York66 min
Jan 8, 8:09 AM ESTFlash Flood WarningCTPDauphin, Lebanon, Schuylkill4 hr
Jan 8, 8:09 AM ESTFlash Flood WarningCTPAdams, York4 hr
Jan 8, 8:09 AM ESTFlash Flood WarningCTPLancaster4 hr
Jan 8, 8:50 AM ESTFlash Flood WarningCTPWarren5 hr
Jan 8, 9:20 AM ESTFlash Flood WarningCTPMcKean5 hr
Jan 8, 10:35 AM ESTFlash Flood WarningCTPCumberland, Franklin, Perry4 hr
Jan 8, 11:42 AM ESTFlash Flood WarningCTPAdams, York4 hr
Jan 8, 11:42 AM ESTFlash Flood WarningCTPDauphin, Lancaster, Lebanon, Schuylkill4 hr
Jan 8, 12:04 PM ESTFlash Flood WarningCTPPotter4 hr
Jan 8, 12:26 PM ESTFlash Flood WarningCTPJuniata, Northumberland, Snyder4 hr
Jan 8, 12:26 PM ESTFlash Flood WarningCTPColumbia, Montour4 hr
Jan 8, 12:26 PM ESTFlash Flood WarningCTPUnion4 hr
Jan 8, 1:28 PM ESTFlash Flood WarningCTPLycoming, Sullivan4 hr
Jan 8, 1:31 PM ESTFlash Flood WarningCTPMcKean, Warren4 hr
Jan 8, 2:02 PM ESTFlash Flood WarningCTPBedford, Blair, Fulton, Huntingdon4 hr
Jan 8, 2:02 PM ESTFlash Flood WarningCTPCentre, Clinton4 hr
Jan 8, 2:42 PM ESTFlash Flood WarningCTPCumberland, Franklin, Perry4 hr
Jan 8, 3:36 PM ESTFlash Flood WarningCTPDauphin, Lancaster, Lebanon, Schuylkill6 hr
Jan 8, 3:36 PM ESTFlash Flood WarningCTPAdams, York6 hr
Jan 8, 3:52 PM ESTFlash Flood WarningCTPPotter6 hr
Jan 8, 4:17 PM ESTFlash Flood WarningCTPCameron6 hr
Jan 8, 4:27 PM ESTFlash Flood WarningCTPDauphin, Lancaster, Lebanon, York6 hr
Jan 8, 4:27 PM ESTFlash Flood WarningCTPCentre, Clinton, Mifflin, Union6 hr
Jan 8, 4:27 PM ESTFlash Flood WarningCTPColumbia, Juniata, Lycoming, Montour, Northumberland, Perry and 2 more6 hr
Jan 8, 4:27 PM ESTFlash Flood WarningCTPSullivan6 hr
Jan 8, 4:27 PM ESTFlash Flood WarningCTPAdams, Cumberland6 hr

Nearby

Flash Flood Warnings in Pennsylvania, 1998Every flash flood 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.