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What does a 292259Z Mean?
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10-13-2012, 03:28 PM
Post: #1
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What does a 292259Z Mean?
listed here: http://www.ntsb.gov/aviationquery/brief2...MS2&akey=1
and here: VALID 292259Z - 300100Z THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 73 CONTINUES. CONVECTIVE COVERAGE FCST TO INCREASE NEXT FEW HOURS ALONG/AHEAD OF SFC COLD FRONT OVER THIS REGION AS FRONT IMPINGES ON HIGHER-THETAE WARM SECTOR OVER S TX...LARGE HAIL AND OCNL DAMAGING GUSTS EXPECTED. LAST SFC MESOANALYSIS SHOWED COLD FRONT FROM NEAR GTU WSWWD ACROSS EDWARDS/VAL VERDE COUNTIES...AND CROSSING RIO GRANDE S OF 6R6...MOVING SSEWD AT ABOUT 15 KT. S OF FRONT...CONVECTION CONTINUES TO FORM OVER SERRANIAS DEL BURRO RANGE IN COAHUILA...BUT GENERALLY HAS BEEN WEAKENING AFTER MOVING E OF MOUNTAINS AND AWAY FROM OROGRAPHIC FORCING SOURCE. STILL...CINH MAY BE WEAK ENOUGH TO ALLOW ONE OR TWO SUCH TSTMS TO ACQUIRE SUSTAINED ROTATION AND REACH RIO GRANDE AFTER 00Z...ESPECIALLY ANY LEFT-MOVERS OR BOWS THAT MAY FORM. DEEP-LAYER VERTICAL WIND PROFILES REMAIN FAVORABLE WITH 40-50 KT EFFECTIVE SHEAR. PRONOUNCED COUNTERCLOCKWISE CURVATURE IN PREFRONTAL/LOW-LEVEL HODOGRAPHS...BOTH AS OBSERVED IN DFX VWP AND AS PREDICTED REASONABLY WELL BY RUC FCST SOUNDINGS...YIELDS FAR MORE NEGATIVE THAN POSITIVE SRH FOR ALL BUT EXTREMELY DEVIANT/FAST RIGHT-MOVERS...WHICH ARE UNLIKELY EXCEPT WHERE OUTFLOW-DOMINANT. ADDITIONAL TSTMS DEVELOPING N OR NE OF MEX MOUNTAINS MAY BE UNDERCUT BY ZONAL SEGMENT OF COLD FRONT SOON THEREAFTER...AS HAS ISOLATED CELL OVER VAL VERDE COUNTY. CONVECTION APPEARS TO BE DEEPENING FARTHER ENE ALONG MORE SW-NE ALIGNED FRONTAL SEGMENT FROM EDWARDS-LLANO COUNTIES AS OF 2230Z. THIS ACTIVITY MAY HAVE ACCESS TO WARM-SECTOR AIR MASS FOR MORE SUSTAINED PERIOD...ESPECIALLY ANY TSTMS THAT CAN AVOID ACQUIRING LEFT-MOVING SUPERCELLULAR CHARACTERISTICS AND MOVE EWD/SEWD AT LEAST IN STEP WITH BOUNDARY TRANSLATION. MOST STORM MOTIONS NEAR FRONT SHOULD BE CLOSE TO HODOGRAPH...WITH FRONTAL FORCING EVENTUALLY CONTRIBUTING TO DOMINANT QUASI-LINEAR CONVECTIVE MODE. ..EDWARDS.. 03/29/2011 ATTN...WFO...HGX...CRP...EWX...BRO... ATTACHMENTS Carla/Alicia/Jerry(In The Eye)/Michelle/Charley/Ivan/Dennis/Katrina/Rita/Wilma/Ike http://twitter.com/#!/KhouForums srainhoutx Site Admin Posts: 8962 Joined: Tue Feb 02, 2010 3:32 pm Location: NW Houston FM 1960/SH 6 Ads |
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10-13-2012, 03:36 PM
Post: #2
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It is actually a date and time
The first 2 digits are the date and the last four, the time. The "Z" indicates that the time is given in "Zulu" time (ie UTC - Universal Coordinated Time) rather than "local" time. In this case the report is valid from 22.59 UTC on the 29th to 1am UTC on the 30th Ads |
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