Public Information Statement
Issued by NWS San Diego, CA

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Public Information Statement
National Weather Service San Diego Ca
1230 PM PDT Sun Apr 23 2017

...Impact Based Severe Thunderstorm Warnings and Tornado
Warnings Starting Wednesday May 10, 2017...

Effective Wednesday May 10, 2017, any Severe Thunderstorm Warnings
(SVR) issued by the National Weather Service in San Diego will
include HAIL and WIND tags at the bottom of the product. A SVR could
also have a TORNADO tag if there is a small chance that a tornado
could occur within the severe thunderstorm.

Also effective Wednesday May 10, 2017, any Tornado Warnings (TOR)
issued by the National Weather Service in San Diego will include a
TORNADO tag, and possibly a HAIL tag as well.

In addition to these tags, additional descriptive Hazard, Source,
and Impact sections will be included in SVRs and TORs. These changes
also apply to Severe Weather Statements (SVS) that follow-up TORs
and SVRs.

The tornado, hail and wind tags are used to describe the expected
magnitude of each threat. The hazard, source and impact sections are
added to provide extra information on the expected weather threats,
the source that prompted the warning, and the expected impacts
respectively. In extremely rare circumstances, a TORNADO DAMAGE
THREAT tag could be included in Tornado Warnings if the tornado
damage threat is expected to be significant.

The tag line for each threat will be located at the bottom of the
product.

Here is an test example of the new format:

* At 757 AM PST, a severe thunderstorm was located near Ocotillo,
  moving northeast at 25 mph.

  HAZARD...70 mph wind gusts and size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect considerable
           tree damage. Wind damage is also likely to mobile homes,
           roofs, and outbuildings.

* This severe thunderstorm will remain over mainly rural areas of
  southeastern San Diego county.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of
a building.

&&

LAT...LON 3270 11640 3286 11611 3273 11610 3262 11611
      3260 11632
TIME...MOT...LOC 1557Z 240DEG 20KT 3274 11611

HAIL...1.00IN
WIND...70MPH

$$

If you have questions regarding this change, please contact:

Alex Tardy
Warning Coordination Meteorologist and Acting Meteorologist-in-Charge
National Weather Service
Weather Forecast Office
San Diego, Ca
858-675-8700
Alexander.Tardy@noaa.gov

$$

NWS San Diego, CA



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