FJXN20 RJTD 200130
STRATALERT TOKYO 20 FEB
2009 0130 UTC
30-HPA ANALYSIS 1200UTC 18 FEB
1. WARM MINUS 44 58N 138E,
   WARM MINUS 47 77N 140W,
   LOW  315 55N 136E,
   HIGH 375 68N 2W.
2. CONDITIONS
   AT 30-HPA HEIGHT FIELD,
   THE POLAR VOLTEX IS LOCATED OVER EASTERN SIBERIA.
   WARM AIRS LIE OVER THE BEAUFORT SEA AND
   EASTERN SIBERIA.
   REGARDING ZONAL MEAN FIELD,
   WESTERLY WIND IS OBSERVED OVER THE POLAR REGION
   APPROXIMATELY THROUGHOUT THE STRATOSPHERE.
3. STRATALERT ENDS.
   MAJOR WARMING ENDED AT 30-HPA.
REMARK: THE HEIGHT DATA SHOULD BE READ IN DECAMETERS
        ADDING 20 KILOMETERS.=