590
WTPZ42 KNHC 091446
TCDEP2
POST-TROPICAL CYCLONE BORIS DISCUSSION NUMBER 10
NWS NATIONAL HURRICANE CENTER MIAMI FL EP022026
900 AM CST TUE JUN 09 2026
BORIS HAS CONTINUED TO WEAKEN AS IT MOVES FARTHER INLAND. THE
LOW-LEVEL CENTER HAS BECOME VERY DIFFICULT TO FIND EVEN WITH THE
USE OF GOES 1-MINUTE VISIBLE IMAGERY, AND THE REMAINING CONVECTION
IS IN A DISORGANIZED BAND ALONG THE COAST OF SOUTHERN MEXICO. BASED
ON THESE DEVELOPMENTS, BORIS HAS DECAYED TO A REMNANT LOW PRESSURE
AREA AND THIS WILL BE THE LAST ADVISORY.
THE BEST ESTIMATE OF THE CURRENT MOTION IS 305/6 KT. THE REMNANTS
OF BORIS ARE EXPECTED TO MOVED WEST-NORTHWESTWARD UNTIL THE SYSTEM
DISSIPATES COMPLETELY IN 12 H OR SO.
ALTHOUGH BORIS IS DECAYING, THERE IS A CONTINUED THREAT OF HEAVY
RAINFALL, WHICH IS THE PRIMARY HAZARD OF THIS SLOW-MOVING SYSTEM.
THESE RAINS WILL LIKELY RESULT IN FLASH FLOODING AND MUDSLIDES IN
MOUNTAINOUS TERRAIN THROUGH TODAY.
KEY MESSAGES:
1. HEAVY RAINFALL ASSOCIATED WITH THE REMNANTS OF BORIS ACROSS
PORTIONS OF SOUTHERN MEXICO WILL SUBSIDE BY LATER TODAY. SOME RISK
OF ADDITIONAL FLOODING AND MUDSLIDES CONTINUES THIS MORNING,
ESPECIALLY IN AREAS OF STEEP TERRAIN.
2. WIND GUSTS TO TROPICAL-STORM FORCE MAY OCCUR FOR THE NEXT FEW
HOURS ALONG PORTIONS OF THE COAST OF SOUTHERN MEXICO.
FORECAST POSITIONS AND MAX WINDS
INIT 09/1500Z 16.9N 98.9W 25 KT 30 MPH...POST-TROP/INLAND
12H 10/0000Z 17.3N 99.7W 20 KT 25 MPH...POST-TROP/INLAND
24H 10/1200Z...DISSIPATED
FORECASTER BEVEN
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