Advisories

000
WTPA32 PHFO 161746
TCPCP2
 
BULLETIN
Tropical Storm Lala Intermediate Advisory Number 17A
NWS Central Pacific Hurricane Center Honolulu HI   CP012026
Issued by NWS National Hurricane Center Miami FL
800 AM HST Sun Aug 16 2026
 
...HEAVY RAINFALL AND GUSTY WINDS CONTINUE OVER PORTIONS OF MAUI 
COUNTY AND OAHU...
...CONDITIONS DETERIORATING ACROSS KAUAI COUNTY...
 
 
SUMMARY OF 800 AM HST...1800 UTC...INFORMATION
----------------------------------------------
LOCATION...20.7N 158.8W
ABOUT 190 MI...305 KM WNW OF KAILUA-KONA HAWAII
ABOUT 75 MI...120 KM SW OF HONOLULU HAWAII
MAXIMUM SUSTAINED WINDS...65 MPH...100 KM/H
PRESENT MOVEMENT...NW OR 305 DEGREES AT 14 MPH...22 KM/H
MINIMUM CENTRAL PRESSURE...994 MB...29.36 INCHES
 
 
WATCHES AND WARNINGS
--------------------
CHANGES WITH THIS ADVISORY:
 
The Tropical Storm Warning for Hawaii County has been discontinued.
 
SUMMARY OF WATCHES AND WARNINGS IN EFFECT:
 
A Tropical Storm Warning is in effect for...
* Maui County, including the islands of Maui, Lanai, Molokai and
Kahoolawe
* Oahu
* Kauai County, including the islands of Kauai and Niihau
 
A Tropical Storm Warning means that tropical storm conditions are
expected somewhere within the warning area, in this case within the 
next 12 hours.
 
Interests in the Papahanaumokuakea Marine National Monument should
monitor the progress of Lala.
 
For storm information specific to your area, including possible
inland watches and warnings, please monitor products issued by your
local National Weather Service forecast office.
 
 
DISCUSSION AND OUTLOOK
----------------------
At 800 AM HST (1800 UTC), the center of Tropical Storm Lala was 
located near latitude 20.7 North, longitude 158.8 West. Lala is 
moving toward the northwest near 14 mph (22 km/h) but is expected to 
turn westward soon. Then, a continued westward motion is forecast 
through Tuesday night. The center of the storm is forecast to pass 
south of Kauai County today and move south of the easternmost 
Northwestern Hawaiian Islands early this week.
 
Maximum sustained winds have decreased to near 65 mph (100 km/h) 
with higher gusts. Slight additional weakening is possible during 
the next day or so. Some restrengthening is forecast by midweek.
 
Tropical-storm-force winds extend outward up to 140 miles (220 km)
from the center. A wind gust of 67 mph (108 km/h) was recently 
reported at the Marine Corps Air Station in Kaneohe (PHNG).
 
The estimated minimum central pressure is 994 mb (29.36 inches).
 
 
HAZARDS AFFECTING LAND
----------------------
Key messages for Lala can be found in the Tropical Cyclone
Discussion under AWIPS header HFOTCDCP2 and WMO header WTPA42 PHFO.
 
WIND: Tropical storm conditions are ongoing across portions of Maui 
County and Oahu and are spreading westward over Kauai County, with 
the strongest winds occurring in areas of higher terrain. Wind 
speeds atop mountains and on the windward and leeward slopes are 
often up to 30 percent stronger than the near-surface winds 
indicated in this advisory, and in some elevated locations could be 
even greater.
 
RAINFALL: Lala is expected to produce additional rainfall of 1 to 3
inches across windward portions of the the Big Island and windward
Maui, with maximum storm total of 30 to 35 inches over the windward
Big Island. Across the remainder of the island chain total rainfall
of 2 to 6 inches is expected, with the highest totals over windward
Kauai. This rainfall may produce life-threatening flooding and
mudslides, especially in areas of steep terrain.
 
For a complete depiction of forecast rainfall associated with Lala,
please see the National Weather Service Storm Total Rainfall Graphic
available at hurricanes.gov/graphics_cp2.shtml?rainqpf
 
For a list of rainfall observations and wind reports associated with
Lala, see the companion storm summary at WBCSCCNS2 with the WMO
header ACUS42 KWBC or at the following link:
www.wpc.ncep.noaa.gov/discussions/nfdscc2.html.
 
STORM SURGE: The combination of a dangerous storm surge and the
tide will cause normally dry areas near the coast to be flooded by
rising waters moving inland from the shoreline. The water could
reach the following heights above ground somewhere in the indicated
areas if the peak surge occurs at the time of high tide...
 
Oahu...1-2 ft
Kauai...1-2 ft
 
The deepest water will occur along the immediate coast, where the 
surge will be accompanied by large and dangerous waves. 
Surge-related flooding depends on the relative timing of the surge 
and the tidal cycle, and can vary greatly over short distances. For 
information specific to your area, please see products issued by 
your local National Weather Service forecast office.
 
For a complete depiction of areas at risk of storm surge inundation,
please see the National Weather Service Peak Storm Surge Graphic,
available at hurricanes.gov/graphics_cp2.shtml?peakSurge.
 
SURF: Swells generated by Lala will continue to build westward
across the exposed windward waters today. Swells will also build
over the exposed leeward waters as Lala passes south of the islands.
These swells are likely to cause life-threatening surf and rip
current conditions. Please consult products from your local weather
office.
 
 
NEXT ADVISORY
-------------
Next complete advisory at 1100 AM HST.
 
$$
Forecaster Reinhart