SPC - No MDs are in effect as of Mon Sep 21 10:53:01 UTC 2026
No Mesoscale Discussions are in effect as of Mon Sep 21 10:53:01 UTC 2026.
Summary by Storm News Editorial Desk · As published by SPC forecast products · · 1 min read
No Mesoscale Discussions are in effect as of Mon Sep 21 10:53:01 UTC 2026.

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Wind Speed Probabilities last updated Mon, 21 Sep 2026 09:34:42 GMT
NHC Eastern Pacific · Sep 21, 2026

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Wind Speed Probabilities last updated Mon, 21 Sep 2026 09:28:42 GMT
NHC Eastern Pacific · Sep 21, 2026

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Wind Speed Probabilities last updated Mon, 21 Sep 2026 09:22:54 GMT
NHC Atlantic · Sep 21, 2026
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000 WTPZ42 KNHC 210848 TCDEP2 Tropical Storm Polo Discussion Number 3 NWS National Hurricane Center Miami FL EP172026 300 AM CST Mon Sep 21 2026 Deep convection associated with Polo has been gradually increasing over the past several hours. A recent GMI microwave pass indicates t...
NHC Eastern Pacific · Sep 21, 2026
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000 FOPZ12 KNHC 210843 PWSEP2 TROPICAL STORM POLO WIND SPEED PROBABILITIES NUMBER 3 NWS NATIONAL HURRICANE CENTER MIAMI FL EP172026 0900 UTC MON SEP 21 2026 AT 0900Z THE CENTER OF TROPICAL STORM POLO WAS LOCATED NEAR LATITUDE 15.5 NORTH...LONGITUDE 103.8 WEST WITH MAXIMUM SUSTAIN...
NHC Eastern Pacific · Sep 21, 2026
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...POLO EXPECTED TO RAPIDLY INTENSIFY... ...TROPICAL STORM WATCH ISSUED FOR A PORTION OF SOUTHWESTERN MEXICO... As of 3:00 AM CST Mon Sep 21 the center of Polo was located near 15.5, -103.8 with movement NE at 8 mph. The minimum central pressure was 1003 mb with maximum sustained...
NHC Eastern Pacific · Sep 21, 2026
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000 WTPZ22 KNHC 210841 TCMEP2 TROPICAL STORM POLO FORECAST/ADVISORY NUMBER 3 NWS NATIONAL HURRICANE CENTER MIAMI FL EP172026 0900 UTC MON SEP 21 2026 TROPICAL STORM CENTER LOCATED NEAR 15.5N 103.8W AT 21/0900Z POSITION ACCURATE WITHIN 30 NM PRESENT MOVEMENT TOWARD THE NORTHEAST O...
NHC Eastern Pacific · Sep 21, 2026
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000 WTPZ41 KNHC 210839 TCDEP1 Tropical Storm Odalys Discussion Number 5 NWS National Hurricane Center Miami FL EP162026 200 AM PDT Mon Sep 21 2026 Odalys continues to be an asymmetric tropical cyclone this morning, with deep convection primarily confined to the southern and easte...
NHC Eastern Pacific · Sep 21, 2026
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008 FOPZ11 KNHC 210838 PWSEP1 TROPICAL STORM ODALYS WIND SPEED PROBABILITIES NUMBER 5 NWS NATIONAL HURRICANE CENTER MIAMI FL EP162026 0900 UTC MON SEP 21 2026 AT 0900Z THE CENTER OF TROPICAL STORM ODALYS WAS LOCATED NEAR LATITUDE 13.5 NORTH...LONGITUDE 128.7 WEST WITH MAXIMUM SUS...
NHC Eastern Pacific · Sep 21, 2026
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...ODALYS CONTINUES MOVING NORTHWESTWARD... As of 2:00 AM PDT Mon Sep 21 the center of Odalys was located near 13.5, -128.7 with movement NW at 13 mph. The minimum central pressure was 1004 mb with maximum sustained winds of about 45 mph....
NHC Eastern Pacific · Sep 21, 2026
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971 WTPZ21 KNHC 210838 TCMEP1 TROPICAL STORM ODALYS FORECAST/ADVISORY NUMBER 5 NWS NATIONAL HURRICANE CENTER MIAMI FL EP162026 0900 UTC MON SEP 21 2026 TROPICAL STORM CENTER LOCATED NEAR 13.5N 128.7W AT 21/0900Z POSITION ACCURATE WITHIN 25 NM PRESENT MOVEMENT TOWARD THE NORTHWEST...
NHC Eastern Pacific · Sep 21, 2026
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000 WTNT41 KNHC 210836 TCDAT1 Tropical Storm Fay Discussion Number 8 NWS National Hurricane Center Miami FL AL062026 900 AM GMT Mon Sep 21 2026 Fay is now feeling the effects of strong vertical wind shear. Satellite imagery indicates that the circulation has become significantly ...
NHC Atlantic · Sep 21, 2026