000 
TXPS40 PHFO 062358
TCSSP 

SOUTHERN HEMISPHERE TROPICAL CYCLONE SUMMARY

TROPICAL CYCLONE HETA NEAR 24.3S 165.7W AT 06/2300 UTC BASED ON 
BOTH GOES9 AND GOES10 4 KM RESOLUTION IR IMAGERY AND 2 KM VISIBLE 
IMAGERY AND ANIMATION. POSITION ACCURATE WITHIN 45 NM. ESTIMATED 
MAXIMUM 1 MINUTE MEAN WIND SPEED 105 KT. MOVEMENT TOWARDS 130 
DEGREES AT 22 KT OVER THE PAST 6 HOURS.

T4.5/5.5/W1.5/24 HOURS

REMARKS...
EYE NOT DETECTABLE IN EIR IMAGERY. PERSISTENT CLEAR AREA HAS BEEN 
APPARENT IN VISIBLE IMAGERY...ESPECIALLY IN GOES10 IMAGERY. 
DIFFICULT TO SAY IF THIS IS INDEED AN EYE FEATURE...AS LOW CLOUD 
BANDS APPEAR TO CURVE IN TOWARDS A CENTER THAT IS EAST OF THE CLEAR 
AREA. HAVE UTILIZED EMBEDDED CENTER PATTERN...WITH CENTER ESTIMATED 
TO BE WEST OF COLDEST TOPS...WHICH HAVE BEEN WARMING OVER PAST 4 
HOURS. 

EMBEDDED CENTER WITHIN 0.5 DEGREES OF LG YIELDS CF OF 4.5. USE OF 
CURVED BAND ON VISIBLE IMAGERY YIELDS DT OF 4.5 AS WELL. CI HELD AT 
5.5 IN WEAKENING PHASE. MET IS 6.0.

BIRCHARD