Alert archive / Texas / Flash Flood Warnings in 1998

Flash Flood Warning 97, NWS Fort Worth, TX

November 12, 1998Henderson County, Van Zandt County, Texas

NWS Fort Worth, TX issued this flash flood warning at Nov 12, 1998, 7:57 PM CST for Henderson County, Van Zandt County, Texas. It was in force for 5 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
Nov 12, 1998, 7:57 PM CST (01:57 UTC)
Expired
Nov 13, 1998, 1:00 AM CST
In force
5 hr
Issued by
NWS Fort Worth, TX
Area
Whole counties

Counties Henderson County, TX, Van Zandt County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 138 km from the middle of the area, began a volume at 02:00 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

Fort Worth, TX (KFWD), launched 00:00Z, 2.0 hours before the alert went out and 144 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, Fort Worth, TX at 00:00Z on 1998-11-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 12 joules per kilogram.LCLEL10008507005003002001001 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, Fort Worth, TX at 00:00Z on 1998-11-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 36 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
12 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
415 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
36 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

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

The office that day

Everything else NWS Fort Worth, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Nov 12, 8:16 PM CSTFlash Flood WarningFWDLeon, Robertson6 hr
Nov 12, 8:16 PM CSTFlash Flood WarningFWDMilam6 hr
Nov 12, 8:23 PM CSTFlash Flood WarningFWDRains5 hr
Nov 12, 9:44 PM CSTFlash Flood WarningFWDEllis, Navarro6 hr
Nov 12, 10:36 PM CSTFlash Flood WarningFWDHopkins, Hunt, Kaufman5 hr
Nov 13, 12:14 AM CSTFlash Flood WarningFWDAnderson, Freestone4 hr
Nov 13, 12:36 AM CSTFlash Flood WarningFWDJohnson3 hr
Nov 13, 12:50 AM CSTFlash Flood WarningFWDHenderson, Rains, Van Zandt6 hr
Nov 13, 1:02 AM CSTFlash Flood WarningFWDSomervell6 hr
Nov 13, 2:00 AM CSTFlash Flood WarningFWDLeon, Milam, Robertson5 hr
Nov 13, 3:45 AM CSTFlash Flood WarningFWDAnderson, Ellis, Freestone, Navarro6 hr
Nov 13, 3:45 AM CSTFlash Flood WarningFWDHopkins, Hunt, Rains6 hr
Nov 13, 3:45 AM CSTFlash Flood WarningFWDJohnson6 hr
Nov 13, 3:45 AM CSTFlash Flood WarningFWDKaufman6 hr
Nov 13, 5:53 AM CSTFlash Flood WarningFWDDelta4 hr
Nov 13, 6:45 AM CSTFlash Flood WarningFWDHenderson, Van Zandt3 hr
Nov 13, 6:50 AM CSTFlash Flood WarningFWDMilam3 hr

Nearby

Flash Flood Warnings in Texas, 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.