HURRICANE LANE - INFRASTRUCTURE IMPACT SUMMARY - UPDATE 1 - WaterISAC
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INFRASTRUCTURE IMPACT SUMMARY
August 24, 2018; 1845 EDT
HURRICANE LANE – INFRASTRUCTURE IMPACT SUMMARY - UPDATE 1
ASSESSMENT
The Department of Homeland Security (DHS)/National Protection and Programs Directorate/National
Risk Management Center (NRMC) assesses low to medium impacts to infrastructure on the Hawaiian
Islands because of heavy rainfall, high winds, and potential storm surge from Hurricane Lane. Regional
impacts may occur, but no national impacts are anticipated.
As of August 24, 2018, 1100 EDT (0500 HST), Hurricane Lane is a Category 2 hurricane located approximately 180 miles
south of Honolulu, HI and moving toward the north at approximately 5 miles per hour (mph). A turn toward the west is
anticipated Saturday, August 25, with an increase in forward speed. On the latest forecast track, the center of Hurricane
Lane will move over, or dangerously close to portions of the main Hawaiian Islands later today and tonight. Maximum
sustained winds are near 110 mph with higher gusts. Hurricane-force winds extend outward up to 35 miles (55 km) from
the hurricane’s center, and tropical storm-force winds extend outward up to 140 miles (220 km). Some weakening is
forecasted for later today and tonight through late Saturday, August 25, but Hurricane Lane is expected to remain a
dangerous hurricane as it approaches the Hawaiian Islands.
Hurricane Lane is expected to produce total rain accumulations of 10 to 20 inches, with localized amounts of up to
40 inches possible over portions of the Hawaiian Islands. Over 30 inches of rain has already fallen at some locations on the
windward side of the Big Island. Very large swells generated by the slow moving hurricane will severely impact the Hawaiian
Islands into this weekend. These swells will produce life-threatening and damaging surf along exposed shorelines.
Additionally, significant coastal erosion is likely to occur following a prolonged period of extreme surf. The combination of a
dangerous storm surge and large breaking waves will raise water levels by as much as two to four feet above normal tide
levels along south and west-facing shores near the center of Hurricane Lane. The surge will be accompanied by large and
destructive waves.
FIGURE 1—HURRICANE LANE TRACK AND FORECAST CONE: CENTRAL PACIFIC HURRICANE CENTER (CPHC) ADVISORY 40, 1100 EDT
(0500 HST), AUGUST 24, 2018
1
The analysis within this document focuses on potential impacts resulting from heavy rainfall, wind damage, and electrical
power outages. If future forecasts for Hurricane Lane predict significant storm surge inundation, NRMC would anticipate
higher levels of physical damage to facilities within inundation zones.
As of August 24, 2018, 1100 EDT (0500 HST), the duration of impacts across sectors cannot be assessed with significant
fidelity because of forecast uncertainty. NRMC will continue to monitor.
NRMC is not aware of any asset disruption within the affected area that would result in a national impact. Furthermore,
NRMC has not identified any materials produced in Hawaii that are used in significant amounts by the rest of the United
States. Since 2014, exports from Hawaii have accounted for no more than 0.1 percent of total U.S. exports annually
according to the U.S. Census Bureau.i
TABLE 1— COMMUNITY LIFELINES
LOCAL /
NATIONAL
REGIONAL
INFRASTRUCTURE LEVEL IMPACT: LOW MEDIUM HIGH
IMPACT
IMPACT
LEVEL
Some loss of coverage resulting from potential disruptions of electric
power service and infrastructure damage (tower and antenna) from high
winds is anticipated. Backup batteries and backup generator power could
be insufficient if power outage recovery times exceed fuel availability and
Communications resupply.
Flooding may damage cable landing sites and terrestrial fiber optic cables
that have not been hardened to protect from water damage. In the event of
an outage in Hawaii, traffic may be rerouted through other trans-Pacific
undersea cables transiting to Japan and Guam.
Electric Power: High winds could cause damage to overhead transmission
and distribution assets. High winds may also cause damage to residential
generation sources (such as solar panels on homes). Large-scale generation
resources, such as petroleum generation, should not be affected. Significant
precipitation and associated flooding could result in outages from
infrastructure damage or removal of power lines from service due to safety
considerations.
Energy
Fuel: Hawaii reports that there is at least a 7-day supply of fuel (gasoline
and diesel) available on each of the main islands. Hawaii Electric has a 30-
day fuel supply available for generation. The two refineries on Oahu are
reported to have a 7-day supply of crude oil and are shutting down as a
precaution in advance of the storm. Barbers Point Harbor on the island of
Oahu is the primary entry point for bulk shipments of crude and refined
products.
Water: Disruptions of electric power service could result in limited
operations at water treatment facilities. If drinking water systems are
unable to maintain sufficient pressure in the water distribution system, boil
water notices will be issued to ensure the safety of the supply. Some
locations could lose water availability if pumping and lift stations lack
Food, Water, Shelter backup generation or run out of fuel.
Food and Agriculture: Transportation disruptions may delay regular
food distribution. Aggregate inventory levels of current food stocks by
island are not known. Status of food and agricultural shipments to re-supply
islands are unknown as well.
Strong damaging winds and heavy rainfall have already resulted in landslides
Transportation affecting roadways, and will continue to cause debris and flooding
conditions. Weather delays and cancellations are in effect across the island
airports. Damage to facilities and aids to navigation could occur because of
i
U.S. Census Bureau. (2018). State of Exports from Hawaii. https://www.census.gov/foreign-trade/statistics/state/data/hi.html. Accessed August 22, 2018.
NATIONAL PROTECTION AND PROGRAMS DIRECTORATE | NATIONAL RISK MANAGEMENT CENTER
2LOCAL /
NATIONAL
REGIONAL
INFRASTRUCTURE LEVEL IMPACT: LOW MEDIUM HIGH
IMPACT
IMPACT
LEVEL
higher than normal wave action. All ports are closed until the storm passes
and the U.S. Coast Guard can conduct port assessments.
Additional personnel are in place to start assessments based on the
forecasted track starting with the Big Island, then Maui County, followed by
the city and county of Honolulu, and then Kauai County. Limited damage to
port facilities and waterways is anticipated from this event.
Hospitals may lose power, but will use backup generators to provide
power until the storm passes. Generators will require refueling if hospitals
experience extended power outages. Minimal physical damage is
Health and Medical anticipated. The Department of Health and Human Services reports that
hospitals have ordered extra medical supplies in anticipation of supply chain
disruptions. Some dialysis centers may not have backup generation capacity
and would be inoperable if power is disrupted.
Emergency Services: Operations are likely to be hindered by
telecommunications network outages and transportation disruptions. Fuel
supplies may need to be replenished at Emergency Services facilities to
continue operations during extended power outages.
Safety and Security Dams: The Ka Loko and Upper Helemano dams are at heightened risk of
overtopping based on current reservoir water levels and forecasted
cumulative rainfall totals. At this time, there is no indication that either of
these two dams will experience a failure. At this time, no additional dams
are forecasted to be at risk. Downstream impacts to lifeline infrastructure
are unlikely.
The impacted area does not contain any known hazardous
Hazardous Waste waste-associated infrastructure.
TABLE 2—ADDITIONAL INFRASTRUCTURE SECTORS OF CONCERN
LOCAL /
NATIONAL
REGIONAL
INFRASTRUCTURE LEVEL IMPACT: LOW MEDIUM HIGH
IMPACT
IMPACT
LEVEL
Chemical facilities may experience disruptions because of wind, water
Chemical inundation, and electric power outages. Minimal physical damage
anticipated.
Facilities may experience disruptions because of wind damage and electric
Commercial Facilities
power outages. Minimal physical damage anticipated.
Local banking and ATM access may experience disruptions in affected areas
Financial Services
because of power outages.
Facilities may experience disruptions because of wind damage and electric
Government Facilities
power outages. Minimal physical damage anticipated.
PDM18082
NATIONAL PROTECTION AND PROGRAMS DIRECTORATE | NATIONAL RISK MANAGEMENT CENTER
3OMB Control No.: 1670-0027
Expiration Date: 01/31/2021
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