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BULLETIN
Tropical Storm Norma Advisory Number  18
NWS National Hurricane Center Miami FL       EP172017
300 PM MDT Mon Sep 18 2017

...NORMA GRADUALLY WEAKENING...


SUMMARY OF 300 PM MDT...2100 UTC...INFORMATION
----------------------------------------------
LOCATION...21.4N 112.8W
ABOUT 210 MI...340 KM WSW OF CABO SAN LUCAS MEXICO
MAXIMUM SUSTAINED WINDS...45 MPH...75 KM/H
PRESENT MOVEMENT...W OR 270 DEGREES AT 6 MPH...9 KM/H
MINIMUM CENTRAL PRESSURE...1003 MB...29.62 INCHES


WATCHES AND WARNINGS
--------------------
There are no coastal watches or warnings in effect.


DISCUSSION AND 48-HOUR OUTLOOK
------------------------------
At 300 PM MDT (2100 UTC), the center of Tropical Storm Norma was
located near latitude 21.4 North, longitude 112.8 West. Norma is
moving toward the west near 6 mph (9 km/h).  A continued westward
motion is forecast for the next 24 hours, followed by a gradual
turn toward the north.

Maximum sustained winds have decreased to near 45 mph (75 km/h) with
higher gusts.  Further weakening is forecast during the next 48
hours and Norma is expected to become a tropical depression by
Tuesday.

Tropical-storm-force winds extend outward up to 70 miles (110 km)
from the center.

The estimated minimum central pressure is 1003 mb (29.62 inches).


HAZARDS AFFECTING LAND
----------------------
SURF:  Swells generated by Norma are affecting portions of the coast
of southwestern Mexico and Baja California Sur and will continue
into Tuesday.  These swells are likely to cause life-threatening
surf and rip current conditions.  Please consult products from your
local weather office.


NEXT ADVISORY
-------------
Next complete advisory at 900 PM MDT.

$$
Forecaster Zelinsky

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