The Blue Ridge Weather Watch does not have any criteria to follow in reporting bad weather conditions to us.
So if you feel threatened by any severe weather condition, we would like to hear from you. Remember you do not have to be a Blue Ridge Weather Watch member or an NWS trained spotter to give us reports.
Here are a few things to report!
STRONG WINDS – Limbs blown off of trees, twisting winds, funnel clouds and wall clouds.
HEAVY RAIN – Water standing on roadways or large amounts of water in ditches or gullies.
HAIL ANY SIZE – If you get any size of hail, we would like to know about it and the diameter in inches.
LIGHTNING – Streaking lightening in your area.
ICE ON TREES – Ice forming on trees or power lines.
SNOW – When snow is beginning to stick on roadways and driveways.
IDENTIFY YOURSELF and give the location of the event you are reporting. This may not be your home location, but the location of the event you are reporting. Also, the NWS prefers that you give cross streets. Rather than 123 Main Street in Morganton, they prefer near the intersection of Main Street and Elm Avenue.
REPORT BRIEFLY:
WHERE YOU SAW IT:
The direction and approximate distance from a known location of the event - not your location. Please give the cross street or cross roads, not addresses or mile markers.
WHEN YOU SAW IT:
Make sure to note the time of your observation.
WHAT IT WAS DOING:
Give a description of the direction, speed of travel, size and the intensity of the event.
And most important - Stay Safe. Do not endanger yourself or your loved ones to report an event.
NWS classifies a thunderstorm as severe if it produces a tornado, hail 1 inch or more in diameter and/or wind gusts are 58 miles an hour or greater.
SPOTTER RULES AND CLUES
1. Always have a safe place nearby to
protect yourself from wind and/or hail.
2. Cars are a safe place from lightning, but NOT from
tornadoes.
3. Moving water is powerful, it only
takes a slight current to push a vehicle off the road.
4. Large hail often falls just in advance of a tornado,
especially large ones.
5. Tornadoes generally move toward the NORTHEAST at 25 to 35
MPH when associated with fronts, and squall lines but CAN travel at 70 MPH.
6. The first gust of wind to reach you from a thunderstorm
is frequently the strongest.
7. WALL CLOUDS formon the rain free base often 15 to 20 minutes before the
tornado occurs.
8. A rain free base denotes the
storm's updraft area, a place to watch closely.
9. Overshooting tops are an indicator of a very strong
storm.
TORNADOES usually form in the trailing edge of a
thunderstorm. Wind speeds can reach 300 MPH in "MAXI" TORNADOES. Conventional
radar can't see a tornado... it only sees the rain, and hail.
Notes:
When spotting for wall clouds, funnel
clouds, tornadoes, and waterspouts the key is always to look for
rotation! Often, scud clouds are mistaken for funnels or tornadoes because they may
form beneath the parent thunderstorm and appear to touch the ground. Just remember... with
scud there will be no rotation.
When estimating wind speed feel free
to use the Beaufort Wind Scale provided in this guide (condensed below). Study the
description of the Effects Observed and choose the appropriate wind speed range from the
table. Report the speed in miles per hour or in knots. DO NOT REPORT THE BEAUFORT
FORCE NUMBER. This will likely send the meteorologists at the National Weather
Service scurrying for reference books, wasting valuable time.
ESTIMATING WIND SPEED
25-31 - Large branches moving. Whistling
in overhead wires.
32-38 - Whole trees moving. Inconvenience walking against wind.
39-46 - Small branches (twigs) break. Impedes walking.
46-54 - Slight structural damage. Larger branches, and weak limbs may break.
55-63 - Moderate structural and tree damage.
64 and above - Heavy to severe tree, and structural damage.
When reporting wind direction remember
that meteorologists always do things backwards. The wind direction reported is ALWAYS
the direction from which the wind is blowing. For example, if you report
the winds as Southerly at 10 mph, that means the winds are coming from the south
blowing to the north.
When reporting hail, use the common
references that are used by the National Weather Service. That is, describe them as pea-sized
(1/4 inch), marble-sized (1/2 inch), dime-sized (3/4 inch), quarter-sized (1 inch),
golfball-sized (1 3/4 inch), baseball-sized (2 3/4 inch) (arggghhhh... let’s hope
you never have to report that)!!!
When assessing wind damage, remember
that most wind damage is done by straight-line winds, not by tornadoes. With
straight-line wind damage, all the damage will look like it diverges (moves outwards) from
a single point possibly in several directions. With tornado damage, destruction is
generally along one direction, debris along the ground is twisted or has spiral
characteristics, and often small arcs where the top-soil has been removed are visible.
If a person is struck by lightning
take appropriate action to ensure immediate aid is given. A person retains no
electrical charge after being struck, so it is safe to touch that person. This
means CPR can be administered immediately if necessary.