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Pacific ENSO Update

1st Quarter, 2011 Vol. 17 No. 1


HI Flag
State of Hawaii
Seasonal Precipitation Summary

Drought conditions enveloped the state of Hawaii in 2010. The October 2009 through April 2010 Hawaiian Islands wet season, or Hooilo, ranked as the driest in the past 30 years and one of the driest in the past 55 years. Relief from drought conditions did not begin until September when persistent trade winds brought windward areas of the state small amounts of rain. This rainfall continued into October with the beginning of the wet season. This with the continued rainfall events in November and December brought the Hawaiian Islands to near-normal and above-normal rainfall totals. Drought conditions have lessened on all the islands and were eliminated on Oahu and Kauai in December. A record daily maximum rainfall total of 5.41 inches fell at the Honolulu International Airport Sunday, December 19th, breaking the old record of 5.28 inches set in 1955.

The long standing drought in 2010, however, has left its mark. Ranchers in some areas on the Big Island are still hauling water for livestock and water use restrictions are still present on Oahu, Molokai, and Maui. Unfortunately, the financial impacts of the drought conditions present this past year will be felt by farmers and ranchers for some time to come.

Additional individual rainfall station information and specific island information for Hawaii can be found in the Monthly Precipitation Summaries.

Hawaii Rainfall Summary for Select Stations, 4th Quarter 2010

Station  
Oct
Nov
Dec
4th Qtr
Annual
Lihue Airport
Rainfall (inches)
0.83
1.61
10.01
12.45
24.62
% of Normal
20%
34%
209%
91%
62%
Honolulu Airport
Rainfall (inches)
0.11
0.55
11.73
12.39
17.43
% of Normal
5%
24%
412%
170%
95%
Kahului Airport
Rainfall (inches)
0.40
1.25
3.61
5.26
9.53
% of Normal
38%
58%
117%
83%
51%
Hilo Airport
Rainfall (inches)
8.29
10.82
7.13
26.24
63.22
% of Normal
86%
69%
68%
73%
50%




Pacific ENSO Applications Climate (PEAC) Center
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Honolulu, HI 96822
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Web Master's email: peac@noaa.gov
Page Last Modified: March 01 2011 02:16:11 GMT

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