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In the case of snowmobile racing, the black flag comes in three stages to disqualification; the first flag is a warning to a racer, the second flag is a one-lap penalty, and the third is disqualification. In order for a snowmobile racer to receive a black flag, the racer must make contact with intent to inconvenience another racer.
In US maritime warning flag systems, a red square flag with a black square taking up the middle ninth of the flag is used to indicate a storm warning (the use of two such flags denotes a hurricane force wind warning or a hurricane warning). The same flag as a storm warning is used to indicate a tropical storm warning. On land, the National ...
Flag signal: Number of sound signals when raised: Number of sound signals when lowered: Description , 1 ↑: Warning Signal. 5 minutes to race start when class flag raised. 1 P ↑: Preparatory signal. 4 minutes to start when P flag raised. Flag P used or if a starting penalty applies I, Z, Black flag or I over Z is used in place of P. 1 P ↓ ...
Warning pennant Warning flag. A single red pennant was shown from the top of the tower as a small craft advisory; for a gale warning, two such pennants were used. Two square flags, red with a black square at center, indicate an approaching hurricane or winds >73 MPH. One such flag warns of storm-force winds or an approaching tropical storm.
A "red flag warning" will be in effect Monday afternoon across the Southern High Plains into western Oklahoma, according to the National Weather Center Norman, and a "fire weather watch" is in ...
Red flag warnings are usually only issued during the spring and fall fire weather seasons, from Feb. 15 to April 30 and from Oct. 1 to Dec. 15, says the National Weather Service. But a combination ...
The PDS red flag warning below was issued by the National Weather Service in Reno, Nevada, on December 19, 2017. [7] On August 3, 2018, the National Weather Service in Reno, Nevada, issued another PDS red flag warning to communicate the threat of life-threatening fire danger due to strong gusty winds and low humidity.
A red flag warning means that warm temperatures, very low humidity and strong winds are expected to combine to create an increased risk of fire danger, according to the NWS.