POLICY REFERENCES

NON-PRECIPITATION WATCH/WARNING ADVISORY

 
PRODUCT:  Non-Precipitation Watch/Warning/Advisory (NPW)

REFERENCE: WSOM Chapter C-44

ISSUED BY:  All Warning Offices

PURPOSE:  The NPW is issued when hazardous weather not associated with precipitation is occurring, imminent, or expected.  Events for which an NPW is issued include high wind, excessive heat, fog, blowing dust, and smoke.  The product may be in the form of a watch (when the event is expected but not imminent), a warning (when the event is occurring/imminent and a threat to life and property), or an advisory (when the event is occurring/imminent and an inconvenience).

CHANGES:  OML 4-98 defines the “segmented” format to be utilized for NPW products.  Regional guidance issued in November 1998 and the corrected version of ROML S-5-2000 in January 2000 indicate that Freeze Warnings should be issued under the NPW ID.

COMMENTS: While the product ID for an NPW is cccNPWxxx, the product’s MND header should appear as “URGENT - WEATHER MESSAGE”.  Each segment of the product should then be headlined with the appropriate watch/warning/advisory.  If multiple watches/warnings/advisories are in effect, then the headlines may be combined, such as “WIND AND BLOWING DUST ADVISORY TODAY”.

CONTACT:  Larry Vannozzi, W/SR1x4, (817) 978-2652 x 106

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Last updated September 14, 2000
Dianna Taylor