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SKYWARN
A GUIDE FOR REPORTING
SEVERE WEATHER
Please call the National Weather Service whenever you observe
the following:
 | Tornadoes or funnel clouds (be very wary of look-alikes;
watch for rotation)
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| Wall clouds, especially if they are rotating
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| Hail (Be specific with regard to size; DO NOT report
MARBLE size)
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| Winds (40 mph or greater; specify whether estimated or
recorded)
-- large branches downed (specify diameter of branch)
-- Trees/power lines downed
-- Structural damage to buildings (roof, windows, etc.)
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| Rainfall
-- 1 inch or greater in an hour (NOT a 1"/hr. rate for 10
minutes)
-- 2 inches or greater storm total
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| Flooding
-- Streams/Rivers -- also, when nearing bankfull
-- Coastal
-- Street (when more than the usual poor drainage puddles)
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| Winter Weather
-- Precipitation type change (rain to sleet/freezing
rain/snow, when the
change has "taken hold")
-- Thunder, when accompanied by snow
-- 1/3" radial ice accretion (from twig outward; not
circumference)
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| New Snowfall
-- First 2 inches; every 2-3 inches thereafter
-- 1 inch per hour or greater
-- If less than 2 inches total, give final total only
-- Give final total (don't leave us hanging with a partial
report)
-- Report any snow/sleet/freezing rain if not in NWS
forecast! |
PROCEDURES
1) Call the NWS at the toll-free number given to you.
2) Identify yourself with your Spotter ID # and your name.
3) BRIEFLY describe WHAT was observed; and WHEN & WHERE it was
observed.
4) If you cannot reach us and you consider your report to be
life-threatening, call your
local police or fire department, explain who you are, and ask that
they relay the
report to the NWS in Taunton, MA.
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