Severe weather in Texoma on Thursday, March 21

Severe weather in Texoma on Thursday, March 21

Definitions of severe weather

Severe thunderstorm warning
Issued when there is radar-based evidence or a reliable observer report that a thunderstorm is producing, or is about to produce, wind gusts of 58 mph or greater, structural wind damage, and/or hail one inch or more in diameter .

Watch for severe thunderstorms
It is issued by the Storm Prediction Center (SPC) when conditions are favorable for severe thunderstorms to develop over a wide area. Tornadoes are not expected to occur in such situations, but the development of isolated tornadoes cannot be ruled out.

PDS Severe Thunderstorm Watch
PDS stands for “Particularly Dangerous Situation” and is issued by the SPC when conditions are favorable for severe thunderstorms to develop over a larger area. In this case, SPC believes multiple events of extreme severe weather with significant wind damage are likely. Citizens should change their daily routine and listen for further updates when this monitoring is issued. Tornadoes are not expected in such situations, but the development of an isolated tornado cannot be ruled out, and widespread damage due to straight-line winds is likely.

Tornado Warning – Observed or indicated by radar
It is issued when there is radar-based evidence or a reliable observer report that a tornado is imminent or occurring.

Hurricane Warning – Major
It is issued when a tornado is reported by a reliable observer (and therefore confirmed, not indicated by radar) and causing significant damage.

Hurricane warning – catastrophic
Issued when a tornado is reported by a reliable spotter (and therefore confirmed, not indicated by radar) and causes significant damage that is considered catastrophic; Complete destruction is possible.

Tornado watch
It is issued by the Storm Prediction Center when conditions are favorable for the development of severe thunderstorms and tornadoes over a wide area.

Tornado PDS watch
PDS stands for “Particularly Dangerous Situation” and is issued when SPC believes a major outbreak of long, large, and violent tornadoes is likely. This is an advanced tornado watch. People on PDS Tornado Watch should change their daily routine to ensure they are aware of the weather and prepared to take action without advance notice.

Important weather warning
It is issued for strong thunderstorms that are below severe levels, but may have some negative effects. It is typically issued when wind gusts of 40-58 mph or hail up to an inch in diameter are threatened.

Flash flood monitoring
It is generally issued when there is a possibility of flash flooding or urban flooding over an area within the next 36 hours.

Flash flood warning
It is issued when flooding is imminent, usually within the next 1 to 3 hours. It is typically issued based on observed heavy rainfall (measured or estimated by radar), but may also be issued if major dam failures have occurred or are imminent.

Flood watch
It is issued when there is a possibility of widespread general flooding over an area within the next 36 hours.

Flood Warning for Point River Forecast
It is issued when the river gauge exceeds, or is expected to exceed, a pre-determined flood stage.

Flood warning
It is issued when flooding is imminent or occurring, generally within the next 1 to 3 hours, but is not expected to significantly threaten life and property.

Wind warning
Issued when sustained winds of 30 to 39 mph are expected for 1 hour or more.

High wind warning
Issued when sustained winds of 40 mph or greater are expected for 1 hour or more, or when sustained winds of 58 mph or greater are forecast without a time limit. A high wind warning is issued when these conditions are met 12 to 48 hours in the future.

Heavy fog warning
Issued when fog is expected to reduce visibility to 1/4 mile or less.

Heat advice
Issued when daytime maximum heat index values ​​are expected to reach or exceed 105°F on at least two consecutive days, with average low temperatures of 75°F or higher.

Excessive heat warning
Issued when daytime maximum heat index values ​​are expected to reach or exceed 110°F on at least two consecutive days, with average low temperatures of 75°F or higher. An overheat alarm is issued when these conditions are likely to be met 12 to 48 hours in the future.

Frost advice
It is issued when nighttime minimum temperatures are expected to range from 33°F to 36°F in the growing season.

Freeze warning
It is issued when nighttime minimum temperatures are expected to reach 32°F or lower in the growing season. They are typically issued to highlight the first few freezes in the fall, or unusually late freezes in the spring. A freeze alarm is issued when these conditions are met 12 to 48 hours in the future.

Air stasis warning
It is only issued at the request of the Environmental Protection Agency (EPA), when weather conditions are stable enough for air pollutants to accumulate in a given area.

Dust warning
Issued when dust blowing is expected to reduce visibility to between 1/4 and 1 mile, generally with winds of 25 mph or greater.

Dust storm warning
Issued when dust gusts are expected to repeatedly reduce visibility to 1/4 mile or less, generally with winds of 25 mph or greater.

Heavy smoke warning
Issued when smoke is expected to reduce visibility to 1/4 mile or less.

Fire weather monitoring
It is issued when dry vegetation and conditions conducive to high fire danger are expected 12 to 72 hours in the future.

Red flag warning
It is issued when vegetation is expected to dry out and conditions conducive to high fire danger are expected, generally within 24 hours.

Snow tip
Issued when snow accumulation of 2 to 4 inches is expected. Counseling may still be warranted if lower accumulations will result in travel difficulties, especially early in the winter.

Snow warning
Issued when occasional snow flurries are expected to reduce visibility to 1/4 mile or less with winds generally 25 to 34 mph. The event must last at least 3 hours.

Snow and snow warning
It is issued when winds of 25 to 34 mph are expected to be accompanied by blowing snow and blowing snow, sometimes reducing visibility to 1/4 mile or less. The event must last at least 3 hours.

Freezing rain/drizzle warning
Issued for freezing rain when ice accumulations are expected to cause travel problems, but not to exceed 1/4″.

Frost Advisory
Released for frost buildup of 1/4″ to 1″. Since freezing rain usually occurs with other types of precipitation, a winter weather warning will always be used in such cases.

Winter weather warning
Issued for a winter weather event in which more than one hazard exists, but all precipitation is expected to remain below warning criteria. For example, it will be issued if two inches of snow is expected with an occasional small amount of sleet mixed in.

Wind chill warning
It is issued when wind chill values ​​reach -5°F to -19°F, with wind speeds of about 10 mph or greater.

Wind chill warning
It is issued when wind chill values ​​reach -20°F or colder, with wind speeds of about 10 mph or greater. A Wind Chill Watch is issued when these conditions are met for 12 to 48 hours in the future.

Snow storm warning
Issued when a period of freezing rain is expected to produce ice accumulations of 1/4 inch or more, or cause significant travel or utility disruptions.

Severe frost warning
Issued when a period of frost is expected to produce ice accumulations of 1 inch or more, or cause significant travel or facility disruptions.

Heavy snow warning
Issued when snow is expected to accumulate 4 inches or more in 12 hours, or 6 inches or more in 24 hours.

Winter storm warning
Issued for a winter weather event in which more than one hazard exists and is expected to meet one of the above warning criteria. For example, it would be issued if 5 inches of snow is expected within 12 hours, with some sleet mixed in at times. It is typically issued for heavy snow with strong winds of 25-34 mph that cause the snow to blow and drift. A winter storm watch is issued when these conditions are met 12 to 48 hours in the future.

Snow storm warning
It is issued for sustained winds or frequent winds greater than or equal to 35 mph accompanied by falling and/or snowfall, often reducing visibility to less than 1/4 mile for three or more hours. Blizzard Watch will be released when these conditions are met 12 to 48 hours in the future.

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