TXPS22 KNES 180018
TCSWSP

A.  18P (NATHAN)

B.  17/2332Z

C.  15.2S

D.  149.3E

E.  THREE/MTSAT

F.  T3.5/3.5/D1.5/12HRS

G.  IR/EIR/VIS/SSMIS/AMSU

H.  REMARKS...2151Z SSMIS PASS SHOWS THE LLC HAS BEGUN TO TUCK UNDER
THE CONVECTIVE CLUSTER AND RECENT VIS SHOWS RING OF OVERSHOOTING TOPS
SURROUNDING THE CENTER WITHIN THE CDO.  THE CDO FEATURE IS SMALL AND
CENTER LOCATION CONFIDENCE IS VERY GOOD BUT CANNOT USE EMBEDDED CENTER
FOR DT DETERMINATION AS 12HR PRIOR FT WAS LESS THAN 3.5. STILL USING THE
OVERSHOOTING TOPS AND EXTERNAL BANDS 1.1 TO 1.2 BANDING CAN BE MEASURED IN
VIS FOR DT OF 4.0. MET IS 3.5 USING RAPID DEVELOPING TREND. PT IS 4.0. FT
IS 3.5 BASED ON CONSTRAINTS OF DEVELOPING 1.5 IN 12HRS.  ONLY RECENTLY
DOES DT REACH 4.0 SO 3HR AND 6HR AVERAGES ARE NOT HIGH ENOUGH TO WARRANT
BREAKING OF RULES AT THIS TIME.

I.  ADDL POSITIONS

    17/1833Z 15.2S 149.5E SSMIS
    17/1834Z 15.1S 149.5E AMSU
    17/2151Z 15.1S 149.3E SSMIS


...GALLINA