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Severe Weather Procedures

 

Oshkosh, Wisconsin
Weather in July

Avg. High: 82 F, 28 C
Avg. Low: 61 F, 16 C
Avg. Rain: 3.3 in, 8.4 cm

 

Winnebago County
Emergency Info

Severe Weather

Heat Safety

Siren Activation

 

Local Radio Stations

96.5 FM

1210 AM

1490 AM

1280 AM

1450 AM

EAA Radio

EAA Radio

WOSH

WNAM

KFIZ

NOAA Weather Radio frequency for southern Winnebago County: 162.500.

 

EAA AirVenture is a rain or shine event, but the safety of pilots and attendees is paramount. Inclement weather may occasionally delay flying activities, but every effort will be made to produce the afternoon air show unless safety margins cannot be met.

In case of severe weather, warnings and instructions will be given over the AirVenture public address system and other communications methods, including Twitter (@EAA), Facebook, and text messaging alerts to your cell phone. To sign up for text messaging alerts:

  • Text OSHALERT to 69050 to automatically sign up for any necessary weather alerts.
  • Text OSHFUN to 69050 to automatically sign up for notable features and attractions (maximum of eight per day).

You can unsubscribe at any time by texting STOP to 69050. Alerts will begin on Friday, July 22, in time for the weekend's mass arrivals and will not be delivered past Sunday, July 31. Message and data rates may apply. View Comprehensive Terms & Conditions of this program.

Note: 69050 can only send text messages to those with telephone numbers based in the United States and its territories, and only to phones/plans that are enabled for short code messaging. Please verify with your provider.

Watches, Warnings & What To Do

If severe weather develops or has the potential to develop, the National Weather Service will issue a watch or warning based on an approaching storm's potential or current strength.

Severe Thunderstorm Watch / Tornado Watch

A Severe Thunderstorm Watch is issued when conditions are favorable for the development of severe thunderstorms in and close to the watch area. A severe thunderstorm by definition is a thunderstorm that produces 1-inch hail or larger in diameter and/or winds equal or exceed 58 miles per hour. A Tornado Watch is issued when conditions are favorable for the development of tornadoes in and close to the watch area.

The size of a severe thunderstorm or tornado watch can vary depending on the weather situation, and is usually issued for a duration of 4 to 8 hours. A watch is normally issued well in advance of the actual occurrence of severe weather. During the watch, people should review severe thunderstorm safety rules and be prepared to move a place of safety if threatening weather approaches.

  • Secure items that could be blown away in high winds.
  • Continue to monitor weather for any changes or additional alerts.
  • Be prepared to unplug your electric cord from the electric pedestal.
  • If you are camping by your aircraft, make sure your aircraft is tied down securely. "Dog leash" tie downs are may not be used to secure your aircraft.

Severe Thunderstorm Warning

Seek safe shelter immediately. Winnebago County emergency sirens will activate, indicating a warning is in effect. A Severe Thunderstorm Warning is issued when either a severe thunderstorm is indicated by radar or a spotter reports a thunderstorm producing hail 1 inch or larger in diameter and/or winds equal or exceed 58 miles per hour. Severe thunderstorms can produce tornadoes with little or no advance warning. The warning is usually issued for a duration of one hour, and can be issued without a Severe Thunderstorm Watch being already in effect.

  • If you are on the AirVenture grounds, seek shelter in a sturdy building or inside a frame exhibitor tent.
  • If you are in Camp Scholler, take shelter in your camper. If you are in a tent or small camper (i.e. pop-up), take shelter in your vehicle.
    • If you are in your vehicle, crouch below the window line and turn the engine on. This will allow the vehicle's airbags to be deployed.
  • If shelter is not available, find a low spot away from trees, fences, and poles, but make sure the spot is not prone to flash flooding.
    • If you cannot avoid trees, try to stay in the area of shorter trees.
    • Cover your head with your hands and lie face down on the ground.

Tornado Warning

Seek safe shelter immediately. Winnebago County emergency sirens will activate, indicating a warning is in effect. A Tornado Warning is issued when a tornado is indicated by the radar or sighted by spotters. It can be issued without a Tornado Watch being already in effect, and is usually issued for a duration of around 30 minutes. The warning will include where the tornado was located and what towns will be in its path. If the thunderstorm which is causing the tornado is also producing torrential rains, a separate Flash Flood Warning would be issued if applicable.

  • Find a sturdy building to seek shelter, or seek shelter in your vehicle. NOTE! Do not seek shelter under a frame tent or in your camper.
    • If you are in your vehicle, crouch below the window line and turn the engine on. This will allow the vehicle's airbags to be deployed.
  • If shelter or a vehicle is not available, find a low spot away from trees, fences, and poles, but make sure the spot is not prone to flash flooding.
    • If you cannot avoid trees, try to stay in the area of shorter trees.
    • Cover your head with your hands and lie face down on the ground.

Tying Down Your Aircraft

The best way to prevent your aircraft from being damaged in a storm is tying it securely when you arrive. Tiedowns are required at EAA AirVenture for the safety of all aircraft and visitors. Review top tips for properly tying down your aircraft.