YOKOTAABI15-101 — Weather Support Plan

YOKOTAABI15-101 governs weather support, services, procedures, and responsibilities for Yokota Air Base and the 374 Airlift Wing.

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  • Publication number: YOKOTAABI15-101
  • Title: Weather Support Plan
  • Date: 2025-12-04

View YOKOTAABI15-101 on armypubs.army.mil


It covers airfield support, mission weather services, severe weather, natural disasters, CBRNE support, and base agency support. It requires local weather requirements to be reviewed annually and establishes actions for volcanic ash and chemical downwind messages.

Applies to: It applies to units assigned to the 374th Airlift Wing (374 AW), subordinate units, and units assigned, attached, or supported by Yokota Air Base (AB).

Topics covered

  • Airfield support
  • Mission weather services
  • Severe weather events
  • Natural disasters
  • Volcanic ash advisories
  • CBRNE weather data
  • Chemical Downwind Messages
  • Base agency support

Questions and answers

How often are local weather support requirements reviewed?

The requirements will be reviewed annually by the requesting unit and updated as required. (paragraph 10-2)

What happens when a local weather requirement is not covered by a forecast or advisory?

If the MEF or a weather watch, warning, or advisory does not cover a specific local weather requirement, it is the responsibility of the individual unit to contact the 374 OSS/OSW to coordinate support. (paragraph 10-2)

What does YOKOTAABI15-101 require for volcanic ash monitoring?

The 374 OSS/OSW will monitor the Tokyo Volcanic Ash Advisory Center (VAAC) website, AFW-WEBS, and Japan Meteorological Agency (JMA) for volcanic ash plume advisories. (paragraph 10-2)

When will SWAP procedures be initiated after a natural disaster?

374 OSS/OSW leadership will assess the need to initiate SWAP procedures depending on the severity of the natural disaster and response efforts or as directed. (paragraph 10-2)

What weather data does the 374 OSS/OSW provide for CBRNE response?

The 374 OSS/OSW will provide weather data and evaluate the accuracy of transport model data against any/all relevant observation data available as requested by the installation Emergency Manager (EM), Fire Emergency Services (FES), and Bioenvironmental Engineering (BEE). (paragraph 10-2)

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