000
FLUS74 KFWD 182212
AWUFWD

AREA WEATHER UPDATE
NATIONAL WEATHER SERVICE FORT WORTH TX
512 PM CDT TUE APR 18 2006

...WARNING DECISION UPDATE FOR NORTH TEXAS...

WATCHING STRONG/SVR STORMS JUST SW OF OUR CWA. WHILE MOST STORMS 
APPEAR TO BE MOVG E-SE...LEFT MOVER OVER NW LLANO COUNTY WILL 
APPROACH LAMPASAS/MILLS BY AROUND 545 PM IF IT HOLDS TOGETHER. STORM 
CURRENTLY HAS MID-LEVEL ANTICYCLONIC ROTATION AS SEEN ON KGRK 88D.

SPC MESOANALYSIS GRAPHICS SUGGEST STORMS ARE FORMING IN A NARROW 
CORRIDOR OF SUFFICIENT CAPE AND WEAK CIN. ENVIRONMENT SUGGESTS LARGE 
HAIL/STRONG UPDRAFTS POSSIBLE. WIDE T/TD SPREADS AND HIGH DOWNDRAFT 
CAPE SUGGEST DOWNBURSTS CAN BE EXPECTED AS WELL...IF STORMS MAINTAIN 
INTENSITY.

WOODALL

NOTE:  THIS IS AN EXPERIMENTAL PRODUCT MEANT TO INCREASE INFORMATION 
EXCHANGE ON THE STORM SCALE DURING WARNING OPERATIONS, AND MAY NOT 
BE ISSUED DURING EVERY WARNING EVENT.

TERMS DEFINED:
3BS = THREE-BODY SCATTER (REFLECTIVITY FLARE SIGNATURE FROM HAIL)
AP = ANOMALOUS PROPAGATION
BWER = BOUNDED WEAK ECHO REGION
CAPE = CONVECTIVE AVAILABLE POTENTIAL ENERGY (INSTABILITY)
CIN = CONVECTIVE INHIBITION (RELATED TO CAP STRENGTH)
GIANT HAIL = HAIL 2 INCHES IN DIAMETER OR LARGER
HP = HIGH-PRECIPITATION SUPERCELL
LP = LOW-PRECIPITATION SUPERCELL
MCS = MESOSCALE CONVECTIVE SYSTEM (ORGANIZED THUNDERSTORM SYSTEM)
MESO = MESOCYCLONE
MT = MAX STORM TOP
POSH = PROBABILITY OF SEVERE HAIL ALGORITHM
RDA = WSR-88D RADAR SITE
RFD = REAR FLANK DOWNDRAFT
SCIT = STORM CELL IDENTIFICATION AND TRACKING ALGORITHM
SREH = STORM-RELATIVE ENVIRONMENTAL HELICITY
SRM = STORM-RELATIVE RADIAL VELOCITY
TDA = ALGORITHM TO DETECT STRONG CYCLONIC SHEAR
TVS = TORNADIC VORTEX SIGNATURE
V = GROUND-RELATIVE RADIAL VELOCITY
VCP = VOLUME COVERAGE PATTERN OF WSR-88D
VIL = VERTICALLY INTEGRATED LIQUID
VOL-Z = REFLECTIVITY AT LOW...MID...AND HIGH LEVELS
Z = REFLECTIVITY

$$