February 2007 01:00 05:04 Discretionary Time 05:04 05:14 Special Time [Alaska] 05:14 06:04 Common Time 06:04 06:14 Special Time [Alaska] 06:14 07:00 Common Time 07:00 07:04 HTR Common Time (1 minute) [Cluster ] 07:04 07:14 Special Time [Alaska] 07:14 07:18 HTR Common Time (1 minute) [Cluster ] 07:18 08:04 Common Time 08:04 08:14 Special Time [Alaska] 08:14 09:04 Common Time 09:04 09:14 Special Time [Alaska] 09:14 10:04 Common Time 10:04 10:14 Special Time [Alaska] 10:14 11:04 Common Time 11:04 11:14 Special Time [Alaska] 11:14 11:18 Common Time 11:18 12:04 HTR Common Time (1 minute) [Cluster ] 12:04 12:14 Special Time [Alaska; Cluster *] 12:14 13:04 Discretionary Time [Australia] 13:04 13:14 Special Time [Alaska] 13:14 14:04 Discretionary Time [Australia] 14:04 14:14 Special Time [Alaska] 14:14 15:04 Discretionary Time [Australia] 15:04 15:14 Special Time [Alaska] 15:14 16:08 Discretionary Time [Australia] 16:08 16:14 Discretionary Time [NIPR] 16:14 17:04 HTR Common Time (1 minute) [Cluster ] 17:04 17:14 Special Time [Alaska] 17:14 18:04 Common Time 18:04 18:14 Special Time [Alaska] 18:14 19:00 Common Time 19:00 19:04 HTR Common Time (1 minute) [Cluster ] 19:04 19:14 Special Time [Alaska] 19:14 19:18 HTR Common Time (1 minute) [Cluster ] 19:18 20:04 Common Time 20:04 20:14 Special Time [Alaska] 20:14 21:04 Common Time 21:04 21:14 Special Time [Alaska] 21:14 22:00 HTR Common Time (1 minute) [Cluster *] 22:00 23:00 Common Time (no switching) 23:00 23:08 Common Time 23:08 23:14 Discretionary Time [NIPR] 23:14 24:12 HTR Common Time (1 minute) [Cluster /*] 24:12 25:00 Common Time 25:00 26:00 HTR Common Time (1 minute) (no switching) 26:00 26:08 HTR Common Time (1 minute) [Cluster *] 26:08 26:14 Discretionary Time [NIPR] 26:14 26:18 HTR Common Time (1 minute) [Cluster *] 26:18 27:08 Discretionary Time 27:08 27:14 Discretionary Time [NIPR] 27:14 28:06 Discretionary Time 28:06 28:24 HTR Common Time (1 minute) [Cluster ] # Total Common time: 7 d 4 h # Total Discr time: 8 d 22 h # Total HTR time: 5 d 6 h # Total Special time: 6 d 16 h During the Special Time for Alaska all radars in the Northern hemisphere are required to run HTR Common Time (1 minute) with frequent frequency switching to produce the best possible convection maps. The Australian radars [Tiger and Unwin] are allowed to run their DT mode during the period from the 13 to the 17, but all other Southern hemisphere radars should run HTR Common Time (1 minute) with frequent frequency switching.