WTNT21 KNHC 202031 
TCMAT1 
 
TROPICAL STORM ARLENE FORECAST/ADVISORY NUMBER 6 
NWS NATIONAL HURRICANE CENTER MIAMI FL AL012017 
2100 UTC THU APR 20 2017 
 
THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT. 
 
TROPICAL STORM CENTER LOCATED NEAR 37.7N 42.0W AT 20/2100Z 
POSITION ACCURATE WITHIN 30 NM 
 
PRESENT MOVEMENT TOWARD THE WEST-NORTHWEST OR 290 DEGREES AT 22 KT 
 
ESTIMATED MINIMUM CENTRAL PRESSURE 993 MB 
MAX SUSTAINED WINDS 40 KT WITH GUSTS TO 50 KT. 
34 KT.......90NE 90SE 0SW 0NW. 
12 FT SEAS..180NE 90SE 0SW 0NW. 
WINDS AND SEAS VARY GREATLY IN EACH QUADRANT. RADII IN NAUTICAL 
MILES ARE THE LARGEST RADII EXPECTED ANYWHERE IN THAT QUADRANT. 
 
REPEAT...CENTER LOCATED NEAR 37.7N 42.0W AT 20/2100Z 
AT 20/1800Z CENTER WAS LOCATED NEAR 37.3N 40.7W 
 
FORECAST VALID 21/0600Z 38.7N 45.9W...POST-TROPICAL 
MAX WIND 35 KT...GUSTS 45 KT. 
34 KT...90NE 90SE 0SW 0NW. 
 
FORECAST VALID 21/1800Z...DISSIPATED 
 
REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 37.7N 42.0W 
 
NEXT ADVISORY AT 21/0300Z