Severe weather outlook for Sunday in Texoma – April 24

Severe Weather Definitions

Severe Thunderstorm Warning
Issued when there is evidence of a thunderstorm that is producing, or about to produce, wind gusts of 58 mph or greater, structural wind damage, and / or hail 1 inch in diameter or greater.

Severe Thunderstorm Watch
The development of severe thunderstorms over a larger-scale region is issued by the Storm Prediction Center (SPC). Tornadoes are not expected in such situations, but isolated tornado development 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 the development of high-end severe thunderstorms over a larger region. In this situation the SPC is likely to occur. Citizens should change their daily routine and listen for further updates when this watch is issued. Tornadoes are not expected in such situations, but isolated tornado development is not likely to occur.

Tornado Warning – Observed or Radar Indicated
A tornado is imminent or imminent.

Tornado Warning – Considerable
The existence of a tornado does not cause significant damage.

Tornado Warning – Catastrophic
The existence of a tornado reports the existence of a tornado; complete destruction is possible.

Tornado Watch
The development of severe thunderstorms and tornadoes over a larger-scale region is issued by the Storm Prediction Center.

PDS Tornado Watch
PDS stands for “Particularly Dangerous Situation” and is probably issued. This is a high-end tornado watch. People in a PDS Tornado Watch should change their daily routines to make sure they take action with little notice.

Significant Weather Advisory
Issued for strong thunderstorms that are below severe levels, but may still have some adverse effects. Usually issued for the threat of wind gusts of 40-58 mph or hail up to 1 inch in diameter.

Flash Flood Watch
Issued generally when there is the possibility of flash flooding or urban flooding over the area within the next 36 hours.

Flash Flood Warning
Issued when flash flood is imminent, generally within the next 1 to 3 hours. Usually issued based on heavy rainfall (measured or radar estimated), but may also be issued.

Flood Watch
Issued when there is the possibility of widespread flooding over the area within the next 36 hours.

Flood Warning for River Forecast Point
Issued when a river gauge has exceeded, or is forecast to exceed, a predetermined flood stage.

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

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

High Wind Warning
Issued when sustained winds of 40 mph or more are expected for 1 hour or longer, or for wind gusts of 58 mph or more with no time limit. A High Wind Watch is issued when these conditions may be 12 to 48 hours in the future.

Dense Fog Advisory
Issued when fog is expected to reduce visibilities to 1/4 mile or less.

Heat Advisory
105 ° F on at least 2 consecutive days, with intermediate low temperatures of 75 ° F or higher.

Excessive Heat Warning
110 ° F on higher than 75 ° F or higher. The Excessive Heat Watch is issued when these conditions may be 12 to 48 hours in the future.

Frost Advisory
Issued when nighttime minimum temperatures are expected to range from 33 ° F to 36 ° F in the growing season.

Freeze Warning
32 ° F or lower in the growing season. They are usually issued in the spring, or unusually late freezes in the spring. A Freeze Watch is issued when these conditions may be 12 to 48 hours in the future.

On Stagnation Advisory
Issued only at the request of the Environmental Protection Agency (EPA), whenever atmospheric conditions are stable enough to cause pollutants to accumulate in a given area.

Blowing Dust Advisory
Issued when blowing dust 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 blowing dust is expected to reduce visibility to 1/4 mile or less, generally with winds of 25 mph or more.

Dense Smoke Advisory
Issued when smoke is expected to reduce visibility to 1/4 mile or less.

Fire Weather Watch
Issued when dry vegetation and conditions are expected 12 to 72 hours in the future.

Red Flag Warning
Issued when dry vegetation and conditions favoring severe fire danger are expected, generally within 24 hours.

Snow Advisory
Issued when accumulating snow of 2 to 4 inches is expected. The advisory may still produce less difficulties, especially early in the winter season.

Blowing Snow Advisory
Issued when blowing snow is expected to reduce visibilities to 1/4 mile or less with winds generally 25 to 34 mph. The event should last at least 3 hours.

Snow and Blowing Snow Advisory
Issued when winds of 25 to 34 mph are expected to fall by snow and blowing snow, occasionally reducing the visibility to 1/4 mile or less. The event should last at least 3 hours.

Freezing Rain / Drizzle Advisory
Issued for freezing rain when ice accumulations are expected to cause travel problems, but not exceed 1/4 “.

Sleet Advisory
Issued for accumulating sleet of 1/4 “to 1”. Due to the fact that there are other precautionary types, it is almost always used in such cases.

Winter Weather Advisory
Issued for a winter weather event in which there is more than one hazard present, but all precipitation is expected below warning criteria. For example, it would be issued 2 inches of snowfall with a small amount of sleet mixing at times.

Wind Chill Advisory
Issued when wind chill values ​​will reach -5 ° F to -19 ° F, with wind speeds around 10 mph or more.

Wind Chill Warning
-20 ° F or colder, with wind speeds around 10 mph or more. A Wind Chill Watch issued when these conditions may be 12 to 48 hours in the future.

Ice Storm Warning
Issued when a period of freezing rain is expected to produce ice accumulations of 1/4 “or greater, or cause significant damage to travel or utilities.

Heavy Sleet Warning
Issued when a period of sleet is expected to produce ice accumulations of 1 “or greater, or cause significant damage to travel or utilities.

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 there is more than one hazard present, and one of the warning criteria listed above is expected to be met. For example, it would be issued 5 inches of snow in 12 hours, with some sleet mixing at times. It is commonly issued for heavy snow with winds of 25-34 mph that will cause blowing and drifting of the snow. A Winter Storm Watch is issued when these conditions may be 12 to 48 hours in the future.

Blizzard Warning
Issued for sustained wind or frequent gusts greater than or equal to 35 mph accompanied by falling and / or blowing snow, often reducing visibility to less than 1/4 mile for three hours or more. A Blizzard Watch is issued when these conditions may be 12 to 48 hours in the future.

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