
Example of a bow front storm on NEXRAD. on this cell there are






GETTING STARTED IN TORNADO AND THUNDERSTORM SPOTTING
Keith Brewster, N0IAW
May, 1996 Updated, April, 2004
All rights reserved.


There will be a 30 question quiz at the end of training. We'll score the tests here and give you your new Skywarn ID card today.
1. Metro Skywarn in the past has been operated by a few Amateur
Radio operators who dedicated a year long effort to assuring the 2.5
million people in the metro area have accurate and timely information
about life threatening weather conditions. This has been one of the
most valuable and effective Amateur Radio services to our
community.
2. More help and representation from the Amateur community is needed.
Talk to your club leadership and urge them to send a representative.
Or better yet, volunteer to be that person.
3. Also needed are Amateurs with flexible afternoon hours to staff
the Weather Service and Bloomington EOC during severe weather this
season. More people willing to provide next years training are needed
too. Anyone can apply but if you have talents in emergency
communications, meteorology, or providing training programs please
call. During the day call Lynn Delong (N0CVI) at 566-1299 or Dave
Johnson (N0KBD) at 434-0600 evenings. (763)-245-7458 Jordan Bugge' (KC0UPL) and we will take your name and
phone number.
1. There will be two nets run simultaneously. You can use either
repeater, but only give your traffic once. Change repeaters only if
you get out of range of the other. There is no need to inform net
control.
2. Primary repeaters: 147.21 146.67 -Minneapolis area
3. Back-up repeaters: 146.76 146.85- Minneapolis area
4. 147.000, Maple Lake Repeater.
5. 146.970, Elk River Repeater.
6.147.345, Becker Repeater.
1. There may be CHECK-INs during the net.
2. Access Net Control with your Skywarn ID#, not your amateur call.
Calls will be ignored by net control. So keep your ID card on
you!
3. Give only reports of severe weather or specifically requested
information will be accepted. You'll be reminded of this during the
net if necessary. You'll all remember the larger number of "dark
clouds", "heavy rain", and "clearing skies" reports during past nets.
This made an already net control even more so.
5. Reports accepted:
a. Any size hail.
b. Significant wind damage.
c. Persistent rotating wall clouds lasting 1 to 3 minutes duration,
or non-rotating wall clouds lasting 5 to 10 minutes.
d. Funnel clouds.
e. Tornadoes
f. Significant flooding causing water running (NOT PONDING) over
roads, fields, lots, etc.
g. Any other information specifically requested by net control.
1. This year you will hear three RACES calls during Skywarn nets.
Three EOCs have been set up and staffed. The Bloomington RACES EOC
(WC0AAA), Dakota County ARES/RACES (NK0D), ARES/RACES EOC (N0NFO)
will continue to share responsibilities. (Elk River EOC is
staffed/operated at the direction of the on duty Net controller or
director, Me).
2. All three EOCs are equipped with two VHF amateur rigs to run two
simultaneous nets, a commercial radio to keep in touch with the
weather service, scanners to monitor law enforcement and other public
service band activities, and radar monitoring equipment. In the
future packet radio, Amateur television, and other EOCs maybe added
to better serve the metro area.
Knowing when severe weather could occur is a spotter responsibility. Monitor local weather reports on broadcast frequencies such as channel 17 or WCCO cable weather channel or NOAA Weather Radio KEC65 on 162.55.
On days where severe weather is possible, monitor 147.21 or 146.67
or 147.000, 146.97, 147, 345 and listen for QSTs or net activation.
Both repeaters will be used in
a net operation so either repeater can be used. DON'T GIVE THE SAME
REPORT ON BOTH REPEATERS. Should either of the primary repeaters go
down, the net will shift to the designated back-up repeater. The
back-up for 147.21 will be 146.76. The back-up repeater for 146.67
will be 146.85. Back up's for the 97/000 are simplex and limited
range. The 147.345 is the net directly to the NWS at Chanhassen and is
not a net control, just a relay. You may hear stations from all over
central Minnesota on this frequency.
The Metro Skywarn Net will be ACTIVATED ONLY AT THE REQUEST OF THE NATIONAL WEATHER SERVICE
Spotter safety is to be of PRIMARY CONCERN.
Spotters will alert net control of ANY CONDITIONS THAT AFFECT THEIR SAFETY IMMEDIATELY. Break into the net with "Emergency!"
Please refer to your outline of the Metro Skywarn Net Procedure to
be followed by net control and spotters. Spotters who do not use the
following procedure may not be acknowledged by net control.
1. Net control will begin with a QST explaining the reason for net
activation.
2. Spotters will contact net control ONLY WITH SEVERE WEATHER
OBSERVATIONS OR INFORMATION SPECIFICALLY REQUESTED BY NET CONTROL.
Report:
a. Any size hail.
b. Damage such as damaged signs, roofs, or large branches or trees
down.
c. Persistent ROTATING wall clouds lasting 1 to 3 minutes, or
NON-ROTATING wall clouds lasting 5 to 10 minutes.
d. Funnel clouds.
e. Tornadoes.
f. Significant flooding causing water running (NOT PONDING) over
roads, fields, yards, etc.
4. Net control may solicit reports from specific areas or regarding
specific severe or non-severe conditions as warranted.
5. If you have a SEVERE weather condition at your location, you
should contact net control by giving your SKYWARN ID NUMBER, NOT YOUR
AMATEUR CALL SIGN. So always carry with you your Skywarn ID card.
6. Net control will acknowledge you by repeating your SKYWARN ID
NUMBER.
7. The spotter shall then reply with your location, to include, MAJOR
CROSS STREETS and CITY/SUBURB, followed by the severe weather
condition that you wish to report and your amateur call sign. If you
give a report other than a severe or specifically requested weather
condition, the net will be reminded to give only severe weather
reports or other specific information.
8. Net control shall acknowledge your report with the TWENTY FOUR
HOUR CLOCK TIME. This will tell you that your report has been
recorded. (4pm local time = 1600.)
Net control will update spotters periodically during the net on changing weather conditions about every 10 minutes. If the frequency is quiet for long periods of time, it just means the Net Control operators are busy.
The net will only be terminated with the permission of the NATIONAL WEATHER SERVICE.
[Improvise a sample severe weather report using the reporting
procedure outlined above.]
Without warning you find yourself in what appears to be severe weather. Check on the 147.21 or 146.67 to see if a net is in progress. If you hear nothing, give your Skywarn ID# and wait for a response. If a net control is monitoring, he will acknowledge. Give it a few minutes. If acknowledged, give your location, your severe weather report and sign with your call.
If a net control cannot be located, report all severe weather
observed by phoning 911 or if by autopatch to local law enforcement.
Identify yourself as a National Weather Service trained Skywarn
spotter and give your Skywarn ID#. Give your location and the severe
weather report.
1. Prestorm awareness.
2. Rain-free base.
3. Wall cloud.
4. Inflow/outflow.
1. Primary repeaters 147.21 146.67. 146.970, 147.000, 147.345.
2. Back-up repeaters 146.76 146.85.
3. Access to Net Control only with Skywarn ID#.
4. Report ONLY severe weather or specifically requested
information.
a. Any sized hail.
b. Damage such as damaged signs, roofs, or large branches or trees
down.
c. Persistent ROTATING wall clouds lasting 1 to 3 minutes, or
NON-ROTATING wall clouds lasting 5 to 10 minutes.
d. Funnel clouds.
e. Tornadoes.
f. Significant flooding causing water running (NOT PONDING) over
roads, fields, yards, etc.
7. End your report with your amateur call and await acknowledgment in
the form twenty-four hour time.
1. Practice nets to be announced on the swap nets.
2. Test to follow.
3. Stick around after completing your test, we'll score it and give
you your new Skywarn ID card.
4. Test answers will be available after your test is corrected.
Created
and designed by Dave Johnson, NØKBD. Copyright © 2004.
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original site is used. Duplication rights noted each page.
Duplication of this page by permission only. Non-profit organizations
may link to any of these pages as long as original site is used. Use
of these pages by for profit organizations by permission only. Metro
Skywarn Inc. makes no warranty of any kind with respect to the
information on this web site, or any of the web sites linked to this
web site. The viewer should not rely upon this information in taking
action in a specific situation, and should consult local emergency
management officials and meterologist regarding the applicability of
any of the information contained herein to his or her own
circumstances. Opinions expressed on this web site or on other linked
web sites are not necessarily endorsed by Metro Skywarn Inc. Last
updated: April 17, 2004 Thanks to TwinsLan
for providing this new site!
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