Can a Severe Weather Statement (SVS) update a warning with a different polygon? If so, can the updated warning contain fewer counties that the original warning?
Yes, on both questions. A warning can shrink in size (it can not become larger). If a county is removed, the warning would be segmented with a continue (CON) section for the valid counties, and a cancelled (CAN) section for those counties removed. If it is smaller and a county is not removed, it will be reflected in the LAT…LON section, but not in the county codes (VTEC/UGC) section. We do recommend the forecaster include reasoning for partial cancellation and/or new information in the continuing segment.
Related Questions
- Can a Severe Weather Statement (SVS) update a warning with a different polygon? If so, can the updated warning contain fewer counties that the original warning?
- Does Calvert County have any warning system to alert citizens of impending severe weather?
- Does the City of Huxley have a severe weather outdoor warning system?
