SEASONAL THREAT INFORMATION
JUNE 1 - NOVEMBER 30: ATLANTIC HURRICANE SEASON
Atlantic Hurricane Season if officially here. The hurricane season typically lasts from June 1 – November 30. Keep you and your family safe by staying informed and prepared.
In order to receive critical information in the event of emergencies, it is highly recommended station personnel register and/or update their profile information in the AtHoc alert system.
Related Information:
NOAA Predicts near-normal 2023 hurricane season - read news release here
Ready Marine Corps Hurricane Information - view page
HURRICANE CATEGORIES
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Category 1—Winds 74–95 mph, 64-82 kt, 119-153 km/h, very dangerous winds will produce some damage.
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Category 2—Winds 96–110 mph, 83-95 kt, 154-177 km/h, extremely dangerous winds will cause extensive damage.
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Category 3—Winds 111–129 mph, 96-112 kt, 178-208 km/h, devastating damage will occur.
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Category 4—Winds 130–156 mph, 113-136 kt, 209-251 km/h, catastrophic damage will occur, well-built framed homes can sustain severe damage with loss of most of roof structure and/or some exterior walls.
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Category 5—Winds exceeding 157 mph, 137 kt, 252 km/h, catastrophic damage will occur, high percentage of framed homes will be destroyed with total roof failure and wall collapse.
*Category 3, 4, and 5 hurricanes are considered “major hurricanes.”
Tropical cyclone Condition levels
The following are Tropical Cyclone Conditions of Readiness used by planners to prepare and protect the installation and personnel from anticipated destructive weather. Each condition has action sets planners implement to protect personnel and installation assets.

Flag Conditions
Flag conditions are monitored from May 1 to Sept. 30, and any other day the temperature could hit 80 degrees. Knowing and understanding these Flag Conditions will help keep you safe from heat-related emergencies like heat cramps, heat exhaustion, and heat/sun stroke. Color coded flags are flown in strategic locations on Marine Corps Installations to communicate hazardous conditions to personnel so that work and outdoor activity can be adjusted accordingly.
FLAG WARNING SYSTEM
The Wet Bulb, Globe Temperature (WBGT) Index is the most effective means of assessing the effect of heat stress on the human body. The WBGT Index is used to determine Flag Conditions as a safety standard for how long individuals can safely work out of doors in hot humid conditions.

Current flag conditions can be viewed at https://ahss.lejeune.usmc.mil/Maps/CherryPoint
MCAS Cherry Point weather forecast and local warnings can be viewed at https://weather.navy.mil/AviationWeb/ViewLocalForecast?stationId=32