Diurnal Distibution of the Maximum Peak Convective Wind Observation ≥ 35 kt during Convective Periods by Month

Diurnal Distibution of the Maximum Peak Convective Wind Observations ≥ 35 kt during Convective Periods by Month

		This figure shows that afternoons (peaking during the 20-21 UTC hours) in May are more likely to have warning level events, but also that there are weaker relative maximum around 01 UTC, 10 UTC and 12 UTC
Figure 12a. The 24-hour percentage distribution of the maximum peak observations ≥ 35 kt for each of the 44 (out of 111 - 39.6%) convective periods meeting this criteria which occurred during the month of May over the 18-year study period.

		The afternoon peak shifts to slightly earlier (19-20 UTC) with no real secondary peaks.
Figure 12b. The 24-hour percentage distribution of the maximum peak observations ≥ 35 kt for each of the 110 (out of 257 - 42.8%) convective periods meeting this criteria which occurred during the month of June over the 18-year study period.

		The afternoon peak shifts slightly earlier, but is still generally around 19-20 UTC and there is evidence of a very small secondary peak at 00 UTC.
Figure 12c. The 24-hour percentage distribution of the maximum peak observations ≥ 35 kt for each of the 131 (out of 306 - 42.8%) convective periods meeting this criteria which occurred during the month of July over the 18-year study period.

		In August the peak remains at 19 UTC, but is not as distinct.
Figure 12d. The 24-hour percentage distribution of the maximum peak observations ≥ 35 kt for each of the 115 (out of 307 - 37.5%) convective periods meeting this criteria which occurred during the month of August over the 18-year study period.

		The afternoon peak shifts back to 21 UTC and actually becomes secondary to those of 01 UTC and 03 UTC. However, as cited earlier, much of the 01 UTC peak was due to a single strong event on 25 September 2001, which had 134 warning-level wind reports.
Figure 12e. The 24-hour percentage distribution of the maximum peak observations ≥ 35 kt for each of the 43 (out of 168 - 25.6%) convective periods meeting this criteria which occurred during the month of September over the 15-year study period.