WSNT12 KKCI 041430 SIGA0L KZMA KZHU SIGMET LIMA 4 VALID 041430/041830 KKCI- MIAMI OCEANIC FIR HOUSTON OCEANIC FIR FRQ TS OBS AT 1430Z WI N2615 W08400 - N2445 W08315 - N2500 W08500 - N2600 W08630 - N2615 W08400. TOP FL370. MOV ESE 30KT. NC.