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Joint Typhoon |
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Warning Center |
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TDO |
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Satellite Reconnaissance Requirements |
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Purpose of TC Satellite Reconnaissance |
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Reconnaissance imagery requirements |
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Use of TC fixes in the warning process |
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Ways to improve fix usefulness |
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To assist the Typhoon Duty Officer in
determining the position and estimated intensity of the tropical cyclone at
a point in time |
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Imagery used in support of JTWC warnings must: |
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Have sufficient resolution to discern the
important meteorological features |
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</= 1.5km visible |
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</= 5 km infrared |
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</= 15 km microwave |
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Be precisely geo-navigated (each pixel tied to a
specific lat/lon point relative to the earth’s surface) to provide accurate
position information |
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The TDO has the following order of precedence: |
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Fixes within the warning window |
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1 hour before to 1/2 hour after warning valid
time |
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What does this mean EXACTLY? |
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For a 00Z warning, use imagery from 23Z to 0030Z |
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For a 06Z warning, use imagery from 05Z to 0630Z |
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For a 12Z warning, use imagery from 11Z to 1230Z |
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For a 18Z warning, use imagery from 17Z to 1830Z |
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TDO has the following order of precedence (continued) |
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NOTE: the imagery must be processed and
available (in SDHS or SIDAS) for your fix in time to complete and transmit
the fix NLT 30 minutes later |
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What does this mean EXACTLY? |
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For a 00Z warning, send fix NLT 0100Z |
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For a 06Z warning, send fix NLT 0700Z |
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For a 12Z warning, send fix NLT 1300Z |
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For a 18Z warning, send fix NLT 1900Z |
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TDO has the following order of precedence
(continued) |
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Platform desirability (whether in or out of
warning window): |
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DMSP high-res visible/infrared |
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GMS-5 |
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METEOSAT-5/7 |
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NOAA |
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All other METSAT sources (TRMM, etc) |
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Fixes outside the warning window |
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Feeds in to |
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Objective best track |
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Synthetic vortex (bogus) insertion |
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Numerical model guidance (persistence) |
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Current warning position and intensity |
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Timeliness (inside warning window) |
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Remarks, remarks, remarks |
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0927 |
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TPPS10 PGTW 200922 |
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A. TROPICAL STORM IVAN (11W) |
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B. 20/0830Z |
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C. 11.2S/4 |
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D. 138.3E/5 |
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E. SIX/SATELLITE |
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F. T2.5/2.5/D1.0/24HRS (20/0530Z) |
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G. IR/EIR/ LLCC |
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38A/
PBO SBC/ANMTN. |
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MILD-MANNERED CALVIN |
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Notes