19990917: Watch Format - ADMIN NOTICE NOUS41 KWBC (fwd)

497 
NOUS41 KWBC 171701
PNSWSH
  
PUBLIC INFORMATION STATEMENT...SERVICE CHANGE NOTICE 99-74
NATIONAL WEATHER SERVICE HEADQUARTERS WASHINGTON DC
100 PM EDT FRI SEP 17 1999
  
TO        FAMILY OF SERVICES /FOS/ SUBSCRIBERS...NOAA WEATHER
           WIRE SERVICE /NWWS/ CUSTOMERS...OTHER NATIONAL WEATHER
           SERVICE /NWS/ CUSTOMERS...NWS EMPLOYEES
  
FROM      THERESE PIERCE...CHIEF...HYDROMETEOROLOGICAL SERVICES
  
SUBJECT   CHANGE OF PRODUCT FORMAT AND FREQUENCY OF ISSUANCE  OF
           STORM PREDICTION CENTER WATCH STATUS MESSAGES EFFECTIVE
           OCTOBER 18 1999.
  
EFFECTIVE MONDAY OCTOBER 18 1999 AT 1100 A.M. CENTRAL DAYLIGHT
TIME /CDT/... 1600 UNIVERSAL COORDINATED TIME /UTC/... THE
PRODUCT FORMAT AND ISSUANCE FREQUENCY OF THE STORM PREDICTION
CENTER WATCH STATUS MESSAGES ISSUED UNDER NWS IDENTIFIER
MKCWWAMKC /FAMILY OF SERVICES IDENTIFIER WWUS8/ WILL CHANGE.  THE
WATCH STATUS MESSAGE WILL CONTAIN RECOMMENDATIONS OF PORTIONS OF
AN ONGOING SEVERE THUNDERSTORM OR TORNADO WATCH THAT CAN BE
CLEARED.  LOCAL FORECAST OFFICES...THROUGH THE WATCH REDEFINE
MESSAGES (PRODUCT CATEGORY SLS)...WILL CONTINUE TO DETERMINE
WHICH COUNTIES ARE OFFICIALLY CLEARED AND WHEN. 
  
THE WATCH STATUS MESSAGE WILL BE ISSUED HOURLY DURING THE
LIFETIME OF EACH SEVERE THUNDERSTORM OR TORNADO WATCH...BEGINNING
ONE HOUR AFTER THE WATCH IS VALID.  THE WATCH STATUS MESSAGE WILL
NO LONGER INCLUDE A DISCUSSION OF THE METEOROLOGY INVOLVED...BUT
WILL REFER TO AN ONGOING MESOSCALE DISCUSSION /PRODUCT MKCSWOMCD/
FOR THE CORRESPONDING METEOROLOGICAL ISSUES.  THE LAST WATCH
STATUS MESSAGE WILL INDICATE WHY THE DECISION WAS MADE TO EITHER
RE-ISSUE A WATCH OR ALLOW A WATCH TO EXPIRE.
                                    
     
EXAMPLES:
  
1) BASIC FORMAT OF THE WATCH STATUS MESSAGE OF THE WATCH STATUS 
MESSAGE:
  
MKCWWAMKC
WWUS08 KMKC 270000
MKC WWA 270000
TXZ000-ARZ000-LAZ000-270100-
  
STATUS REPORT ON WW #1002
  
SEVERE WEATHER THREAT CONTINUES TO THE RIGHT OF A LINE FROM 25
WSW TXK TO 30 ENE TXK TO 10 WNW HOT.
  
.CRAVEN..9/25/99
  
  
  
2)   WATCH STATUS MESSAGE WHEN NO PART OF A WATCH IS RECOMMENDED
      FOR CLEARANCE.
  
MKCWWAMKC
WWUS08 KMKC 270000
MKC WWA 270000
TXZ000-ARZ000-LAZ000-270100-
  
STATUS REPORT ON WW #1002
  
THE SEVERE THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA. 
CONTINUE WW. 
  
FOR ADDITIONAL INFORMATION...SEE MESOSCALE DISCUSSION (SWOMCD)
147.
  
.CRAVEN..9/25/99
  
  
3)WATCH STATUS MESSAGE - WATCH RELEVANT INFORMATION ADDED  
  
MKCWWAMKC
WWUS08 KMKC 270000
MKC WWA 270000
TXZ000-ARZ000-LAZ000-270100-
  
STATUS REPORT ON WW #1002
  
SEVERE WEATHER THREAT CONTINUES SOUTH OF A LINE FROM 25 WSW TXK
TO 30 ENE TXK TO 10 WNW HOT. 
  
FOR ADDITIONAL INFORMATION...SEE MESOSCALE DISCUSSION (SWOMCD)
#147.
  
.CRAVEN..9/25/99
  
  
4)WATCH STATUS MESSAGE - WATCH STATUS UNCHANGED FROM THE PREVIOUS
UPDATE.  
  
MKCWWAMKC
WWUS08 KMKC 270000
MKC WWA 270000
TXZ000-ARZ000-LAZ000-270100-
  
STATUS REPORT ON WW #1002
  
SEVERE WEATHER THREAT CONTINUES SOUTH OF A LINE FROM 25 WSW TXK
TO 30 ENE TXK TO 10 WNW HOT. 
  
THIS IS UNCHANGED FROM THE PREVIOUS STATUS MESSAGE.
  
.IMY..9/25/99
  
  
5)WATCH STATUS MESSAGE - WATCH NOT EXPECTED TO BE REISSUED  
  
MKCWWAMKC
WWUS08 KMKC 270000
MKC WWA 270000
TXZ000-ARZ000-LAZ000-270100-
  
STATUS REPORT ON WW #1002
  
SEVERE WEATHER THREAT CONTINUES EAST OF A LINE FROM 25 WSW TXK TO
30 ENE TXK TO 10 WNW HOT. 
  
WW 1002 WILL BE ALLOWED TO EXPIRE AT 0100Z.  THE SEVERE WEATHER
THREAT IS NOT EXPECTED TO CONTINUE PAST THE EXPIRATION TIME.
  
.CRAVEN..9/25/99
  
NO ACTIONS NEED TO BE TAKEN BY CUSTOMERS TO CONTINUE RECEIVING
THE WATCH STATUS MESSAGE PRODUCTS.
  
IF YOU HAVE ANY QUESTIONS...YOU MAY CONTACT:
  
DAVID IMY                           DANIEL PETERSEN 
OPERATIONS BRANCH CHIEF             SEVERE STORMS PROGRAM
NWS STORM PREDICTION CENTER         NATIONAL WEATHER SERVICE 
1313 HALLEY CIRCLE                  1325 EAST WEST HWY 
NORMAN OK 73069                     ROOM 14107
405-579-0703                        SILVER SPRING MD 20910
                                     301-713-1677 EXT.143
  
..NOTE TO INTERNET USERS...
THIS AND ALL OTHER NWS SERVICE CHANGE NOTICES ARE POSTED ON /USE
LOWER CASE/  HTTP://WWW.NWS.NOAA.GOV/OM/NOTIF.HTM
  
END


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