Hawaii, 2001

Drought in Hawaii, April 1 to 30, 2001

April 1 to 30, 2001 · NWS HFO · 5 events in 5 counties and zones

, Haiku) where rainfall conditions were near normal. Eight gages (7 on Maui, 1 on Molokai) reported totals below 15 percent of average.

Where it happened

Every event with a place to put it; 3 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.

  • Tornadoes
  • Tropical storms and surge
  • Floods
  • Wind
  • Hail
  • Winter weather
  • Heat and drought
  • Cold
  • Fire, smoke and dust
  • Marine and coastal
  • Other

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The toll

Deaths
0
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
5

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS HFO wrote it up.

Maui CountyMost of Maui County remained very dry through April, with the exception being portions of windward Maui (e.g., Haiku) where rainfall conditions were near normal. Eight gages (7 on Maui, 1 on Molokai) reported totals below 15 percent of average. Shower activity over central Molokai during the second half of the month helped stabilize agricultural reservoir levels, though much more was needed to bring conditions back to normal.Island of HawaiiDry weather persisted in leeward areas of the Big Island in April. Rainfall totals ranged from 40 to 60 percent of average in Kona to less than 35 percent of average in Kau and leeward Kohala.The following list contains rainfall statistics for selected locations from Maui County and the island of Hawaii where there have been drought conditions. The first column is the observed rainfall for April. The second column is the 30-year average for each location, while the third column lists the percent of average for the month. The fourth and fifth columns are the year-to-date total and percent of average, respectively. YTD April 01 Avg. %Avg. YTD %Avg.Maui Kihei 0.00 1.20 0 0.59 6 Lahainaluna 0.23 1.70 14 0.97 9 Kula 0.22 2.80 8 3.79 27 Ulupalakua 1.24 2.70 46 3.94 24Molokai Kaunakakai 0.13 1.20 11 1.39 16 Kamalo 1.45 3.30 44 6.37 39 Lanai Lanai City 1.18 3.50 34 3.75 22Island of Hawaii Honaunau 2.76 6.10 45 6.49 36 Kamuela (Upper) 2.38 6.90 34 9.37 37 Waiaha 3.39 6.40 53 5.66 29 Kahua Ranch 1.20 9.20 13 7.78 23 Kealakekua 3.04 6.20 49 7.15 36Drought conditions continue to affect parts of Maui County and the island of Hawaii, mainly leeward sections of the four isles. Farmers and ranchers have been suffering production losses into the millions of dollars. Some farmers have had to substantially reduce the amount of acreage where they can plant. Additionally, the costs of production are rising because farmers and ranchers are being forced to pay for water.

What forecasters said that day

The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Honolulu, HI wrote its last area forecast discussion before the first event at Mar 31, 8:30 PM HST, 3 hours 30 minutes earlier.

Area forecast discussion, Mar 31, 8:30 PM HST, 3 hours 30 minutes before
HAWAIIAN ISLANDS SYNOPTIC DISCUSSION AND GUIDANCE
NATIONAL WEATHER SERVICE HONOLULU HI
830 PM HST SAT MAR 31 2001

SUMMARY...A LOW WEST OF THE ISLANDS IS WEAKENING. HOWEVER ITS
ASSOCIATED HEAVY RAINFALL MAY STILL AFFECT THE WEST END OF THE STATE
TONIGHT AND SUNDAY MORNING.

DISCUSSION...A FEW THUNDERSTORMS HAVE BEEN GENERATED BY THE LOW
SYSTEM WEST OF THE ISLANDS.. THEY CLOSE ENOUGH SOUTH OF KAUAI
TO KEEP KAUAI AND OAHU UNDER A FLASH FLOOD WATCH UNTIL MORNING.
HOWEVER THE LOW WILL WEAKEN SUFFICIENTLY TO ALLOW HIGH PRESSURE
RIDGING TO REBUILD NORTH OF THE STATE AND RETURN TRADE WIND FLOW
BEGINNING OVER THE BIG ISLAND TOMORROW AND LIGHTLY OVER THE KAUAI
AND OAHU LATE SUNDAY..CURRENT 24 HOUR SURFACE PRESSURE RISES OF
NEARLY A MILLIBAR MAY WELL BE THE HARBINGER. THE ETA SKEWT MODEL
PROJECTS STABILIZING TEMPERATURE INVERSIONS RETURNING OVER THE BIG
ISLAND TOMORROW AND KAUAI ON MONDAY. SO TOMORROW AFTERNOON MAY STILL
SEE AFTERNOON CONVECTION AS WELL.  MATSUDA

.PHFO.....WARNINGS.....NONE
.         WATCHES......FLASH FLOOD KAUAI AND OAHU UNTIL 830 AM
.         ADVISORIES...NONE

The radar

The national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

5 drought. Local standard time, as filed.

Drought, Lanai

When
April 1, 12:00 AM HST to April 30, 11:59 PM HST
Where
Lanai forecast zone
Reported by
OFFICIAL NWS OBS.
Coordinates
21.455, -157.961 (the zone’s center; the record gives no point)

Drought, Maui

When
April 1, 12:00 AM HST to April 30, 11:59 PM HST
Where
Maui forecast zone
Reported by
OFFICIAL NWS OBS.
Coordinates
22.011, -159.705 (the zone’s center; the record gives no point)

Drought, Molokai

When
April 1, 12:00 AM HST to April 30, 11:59 PM HST
Where
Molokai forecast zone
Reported by
OFFICIAL NWS OBS.

Drought, South Hawaii

When
April 1, 12:00 AM HST to April 30, 11:59 PM HST
Where
South Hawaii forecast zone
Reported by
OFFICIAL NWS OBS.

Drought, West Hawaii

When
April 1, 12:00 AM HST to April 30, 11:59 PM HST
Where
West Hawaii forecast zone
Reported by
OFFICIAL NWS OBS.
Coordinates
21.455, -157.961 (the zone’s center; the record gives no point)

What these are

Drought
A drought reaching severe (D2) or worse on the US Drought Monitor, or with notable impacts.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in Hawaii in 2001Every state in 2001This day in weather historyWarnings in Hawaii, April 2001

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 5242244, 5242245, 5242246, 5242247, 5242248.