NOUS41 KWBC 061213 CCA

PNSWSH

Service Change Notice 12-41 Corrected

National Weather Service Headquarters Washington DC

703 AM EST Nov 6 2012

To: Subscribers:

-Family of Services

-NOAA Weather Wire Service

-Emergency Managers Weather Information Network

-NOAAPort

Other NWS partners and employees

From: Cynthia Abelman

Chief, Aviation Services Branch

Subject: Corrected: U.S. SIGMET Testing November 7-21

Corrected to add Kansas City to the November 7 testing.

All three United States Meteorological Watch Offices (MWOs)

(Kansas City, Anchorage and Honolulu) will be performing

annual SIGMET testing November 7-21. The tests serve as an

important exercise and will include Volcanic Ash (VA),

Tropical Cyclone (WC) and Weather phenomena (WS) SIGMETs.

The validity period for each test is 10 minutes.

On November 7 at 0200 GMT the Honolulu and Kansas City MWOs

will coordinate with the Tropical Cyclone Advisory Center

(TCAC) in Honolulu and issue a test Tropical Cyclone SIGMET.

Look for the following SIGMET WMO ID during this test:

WCPA## PHFO

WCPN## KKCI

On November 14 at 0200 GMT all three U.S. MWOs will

coordinate with the two Volcanic Ash Advisory Centers

(VAACs) (Anchorage and Washington) for the Volcanic Ash

SIGMETs test. Look for the following SIGMET WMO IDs during

this test:

WVAK## PAWU

WVPN## KKCI

WVPA## PHFO

On November 21 at 0200 GMT all three U.S. MWOs will issue

test SIGMETs for Weather phenomena (WS). Look for the

following three SIGMET WMO IDs during this test:

WSAK## PAWU

WSPN## KKCI

WSPA## PHFO

If active SIGMETs are occurring at the proposed date and

time, the test will still continue.

If you have any questions about this change, please contact:

Michael Graf

National Weather Service

SSMC-2 Station 13314

1325 East-West Highway

Silver Spring Md. 20910

301-713-1726 X 117

Michael.Graf@noaa.gov

National Technical Implementation Notices are online at:

http://www.nws.noaa.gov/om/notif.htm

$$