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A severe thunderstorm warning indicates the warned area is in impending danger from hail or wind speeds meeting warning criteria as well as from lightning and hydrological impacts associated with the storm cell. Severe thunderstorms can and occasionally do produce tornadoes without warning. [2]
Severe Weather Statements may include notices of cancellation (if the warning is being discontinued entirely, or if sections of counties or county-equivalent jurisdictions are being removed from the continuing warning), or notices of a warning being allowed to expire because the prompting storm has weakened below severe criteria.
PDS severe thunderstorm watches are issued when there is a higher than normal risk of severe thunderstorm winds capable of major structural damage (in addition to large hail and perhaps a few isolated tornadoes), usually due to a strong and persistent derecho. These watches are very rare (accounting an average of only two each year), as the ...
A severe thunderstorm watch has been issued over the Southwest Ohio region until 4 p.m., and a tornado warning has been issued in parts of Kentucky.
(The classifiable criteria for a severe thunderstorm vary by country; e.g., in the United States, a thunderstorm is considered severe if it produces winds exceeding 58 mph [93 km/h] and/or hailstones larger than one inch [2.5 cm] in diameter.) [12] A tornado warning therefore implies that it is also a severe thunderstorm warning. Conversely, a ...
When severe weather looms, storm alerts are important tools for keeping people informed. The National Weather Service shares alerts as it warns of potential risks from thunderstorms, flooding ...
Northern & Central New Mexico: Let’s TACO about the difference between a watch & a warning. 🌮🌮 Kidding aside, a watch means conditions are favorable for severe weather/flooding to develop ...
Local Weather Forecast Offices (WFO) of the National Weather Service may issue a Special Weather Statement to alert of a specified hazard that is approaching or below warning or advisory criteria, that does not have a specific alert product code of their own (such as for widespread funnel clouds with limited to no threat of complete tornadogenesis, the likelihood of landspouts, or strong ...