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Flash Flooding Threatens Logistics and Operations Across Most Islands: Immediate Preparations Advised

·6 min read·Act Now

Executive Summary

A flood watch issued for all Hawaiian Islands except the Big Island from Sunday afternoon through Monday morning poses immediate risks to supply chains, transportation, and business operations. Businesses on affected islands must activate emergency preparedness plans to mitigate potential disruptions and revenue loss.

  • Small Business Operators: Risk of road closures, power outages, and delivery delays.
  • Real Estate Owners: Potential for property damage, especially in low-lying areas; possible utility disruptions.
  • Tourism Operators: Flight delays/cancellations, road access issues to attractions, and guest safety concerns.
  • Agriculture & Food Producers: Crop damage, livestock endangerment, and transportation halts for perishable goods.
  • Action: Activate business continuity plans immediately; secure facilities and supplies.

Action Required

High Priority

Immediate closure of roads, power outages, and disruptions to shipping and delivery could occur if preparations are not made, impacting revenue and operations.

Small business operators should activate emergency preparedness and business continuity plans immediately. This includes assessing risks to critical assets, securing vulnerable inventory and equipment, and establishing contingency plans for supply chains. Proactive communication with employees and customers regarding potential disruptions is also essential. Real estate owners must secure properties, especially those in flood-prone areas, by clearing drainage and protecting ground levels, while also communicating preparedness measures to tenants. Tourism operators need to monitor flight and travel updates, enhance guest communication about potential impacts, and ensure on-site safety protocols are robust. Agriculture and food producers must prioritize protecting crops and livestock, securing perishable harvests, and coordinating with transportation providers to mitigate spoilage.

Who's Affected
Small Business OperatorsReal Estate OwnersTourism OperatorsAgriculture & Food Producers
Ripple Effects
  • Road closures/damage → increased transportation costs & delivery delays → reduced profit margins for businesses.
  • Supply chain disruptions → potential for material shortages → increased operational costs and production halts.
  • Visitor travel delays/cancellations → reduced tourism revenue → impact on hospitality sector jobs and related services.
  • Perishable goods spoilage → increased food prices for consumers & lost revenue for farmers.
Aerial view of a flooded town showcasing buildings and streets submerged in water.
Photo by Pok Rie

Flash Flooding Threatens Logistics and Operations Across Most Islands: Immediate Preparations Advised

Executive Brief

A flood watch spanning most Hawaiian Islands from Sunday afternoon through Monday morning necessitates immediate action to safeguard business operations and mitigate financial losses. The threat of flash flooding requires proactive measures to protect assets, ensure staff safety, and maintain critical supply chains. Failure to prepare could result in significant revenue disruption and operational downtime.

  • Small Business Operators: Face potential road closures, power outages, and halted delivery services, impacting sales and customer access.
  • Real Estate Owners: Risk of property damage, particularly to ground-level structures and inventory, alongside potential utility service interruptions.
  • Tourism Operators: Expect flight disruptions, challenges accessing tourist sites due to flooded roads, and the need to manage guest expectations and safety.
  • Agriculture & Food Producers: Crop inundation, potential livestock losses, and impassable routes for harvested goods and essential supplies.
  • Action: Activate immediate business continuity plans, secure vulnerable property and inventory, and communicate with staff and suppliers.

The Change

A flood watch has been issued for Oahu, Kauai, Maui, Molokai, Lanai, Kahoolawe, and Niihau, effective from Sunday noon through Monday 6 a.m. This watch indicates conditions are favorable for flash flooding, particularly in interior, windward, and mauka (mountainward) areas. While not a warning, it signals a heightened risk that requires businesses to be prepared for potential hazardous conditions.

Who's Affected

Small Business Operators (small-operator)

Businesses reliant on physical foot traffic or regular deliveries will be most vulnerable. Road closures due to flash flooding could isolate retail locations and service areas, directly impacting sales. Power outages can cripple operations dependent on electricity for point-of-sale systems, refrigeration, and lighting. Delivery services, whether inbound for supplies or outbound for customer orders, face significant delays or complete halts, leading to lost revenue and potential spoilage of goods. Businesses with lower-lying inventory or equipment are at direct risk of water damage.

Real Estate Owners (real-estate)

Property owners, landlords, and property managers must assess their vulnerability to flash flooding. Structures located in flood-prone zones, particularly on ground floors or in valleys, face risks of structural damage, water infiltration, and mold growth. Utility disruptions, including power and potentially water supply, can further complicate property management and tenant needs. Developers with active construction sites need to secure materials and equipment to prevent washouts and damage. For rental properties, landlords should communicate potential risks and preparedness measures to tenants.

Tourism Operators (tourism-operator)

Hotels, tour companies, and related hospitality businesses are highly susceptible. Flights into and out of affected islands could experience delays or cancellations, impacting arriving guests and potentially stranding departing ones. Road access to popular attractions, hotels, and airports may be cut off due to flooding, disrupting tour schedules and guest transportation. Safety protocols for guests and staff need to be reviewed, especially for outdoor activities or properties near potential flood zones. Communication with guests about potential disruptions is critical for managing expectations and ensuring safety.

Agriculture & Food Producers (agriculture)

Farmers, ranchers, and food producers face acute risks to their livelihoods. Heavy rainfall can lead to crop inundation, soil erosion, and the loss of planted areas. Livestock can be endangered by rising waters, and access to pastures or barns may become impossible. Transportation of perishable goods from farms to markets or processing facilities will likely be severely hampered by road closures, leading to significant spoilage and economic loss. Access to essential farm equipment and inputs could also be restricted.

Second-Order Effects

The immediate impact of flash flooding on transportation infrastructure can trigger a cascade of challenges throughout Hawaii's isolated economy. Road closures and potential bridge washouts disrupt the movement of goods, both raw materials for production and finished products for sale. This logistical bottleneck increases transportation costs due to longer detours and delayed deliveries, which directly impacts operating expenses for businesses across all sectors. For agriculture, this means perishable goods may spoil before reaching markets, leading to revenue loss for farmers and increased prices for consumers. Similarly, for tourism, access to hotels and attractions can be compromised, reducing visitor satisfaction and potentially leading to cancellations, thus impacting the sector's vital revenue stream. The ripple effect extends to labor, where disrupted commutes can lead to staffing shortages, further straining business operations and potentially impacting service delivery. This interconnectedness means that a localized weather event can have widespread economic repercussions throughout the islands.

What to Do

Small Business Operators

Action: Activate emergency preparedness and business continuity plans immediately.

  • Assess Risks: Identify critical assets, inventory, and equipment located in low-lying or flood-prone areas. Secure them by moving to higher ground or protecting them with flood barriers. Ensure any off-site inventory or delivery vehicles are accounted for and secured.
  • Supply Chain Contingency: Contact key suppliers to confirm their preparedness and potential for delivery delays. Have backup suppliers or alternative sourcing options identified if possible. Explore options for pre-positioning critical inventory.
  • Staff Safety & Communication: Communicate proactively with employees regarding potential work disruptions, safety protocols, and reporting procedures. Ensure staff have clear instructions on when to report to work and when to stay home for safety.
  • Customer Communication: Inform customers about potential service delays, altered operating hours, or delivery disruptions through social media, email, or website updates. Manage expectations proactively to mitigate dissatisfaction.
  • Utilities: Make arrangements for temporary power backup if your business is critically dependent on electricity. Ensure emergency contact information for utility providers is readily available.

Real Estate Owners

Action: Secure properties and communicate with tenants and stakeholders.

  • Property Inspection: Conduct a swift assessment of properties in flood-prone areas. Clear drainage systems around buildings to facilitate water runoff. Move valuable inventory or equipment away from ground levels.
  • Tenant Communication: If you manage rental properties, inform tenants of the flood watch, advise them on personal preparedness, and provide emergency contact information for property-related issues. Advise on securing personal belongings.
  • Construction Sites: Secure all building materials, equipment, and tools at active construction sites to prevent them from washing away or causing damage downstream. Review site drainage plans.
  • Insurance Review: Confirm that your insurance policies adequately cover potential flood damage, noting any specific deductibles or exclusions related to such events.

Tourism Operators

Action: Review operational plans, enhance guest communication, and prioritize safety.

  • Flight & Travel Monitoring: Closely monitor flight statuses and advise guests on potential travel disruptions. Work with airlines on rebooking procedures if necessary.
  • Guest Communication: Proactively inform guests about potential impacts on tours, activities, and transportation to destinations. Provide clear guidance on safety measures and emergency procedures.
  • Transportation Contingency: Identify alternative routes or transportation methods in case primary roads become impassable. Communicate with transportation providers regarding potential delays.
  • On-site Safety: Ensure that all hotel properties and tour locations have updated emergency evacuation plans. Brief staff on their roles and responsibilities during potential weather events.
  • Activity Adjustments: Be prepared to modify or cancel outdoor activities if conditions become hazardous. Offer alternative indoor options where feasible.

Agriculture & Food Producers

Action: Protect crops and livestock, and secure critical transportation routes.

  • Field Assessment: Conduct immediate checks of fields and crops, especially those in low-lying areas. Implement any available measures to divert water or protect vulnerable crops.
  • Livestock Safety: Move livestock to higher ground or secure shelters. Ensure adequate feed and water are accessible if animals are moved to temporary locations.
  • Harvest & Storage: Prioritize the harvest and securing of any immediately perishable crops. Ensure storage facilities are protected from water damage.
  • Logistics Coordination: Communicate with transportation partners regarding potential delays in picking up harvested goods or delivering supplies. Explore options for expedited transport before potential road closures.
  • Equipment Security: Secure farm equipment, especially if located near waterways or in areas prone to flash flooding.

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