By Barbara Brown
Invest 91W is in "an environment favorable for tropical development," as it persists near 6.0º north latitude and 168.0º east longitude, about 130 nautical miles south-southwest of Kwajalein Island in the Republic of the Marshall Islands. This information is according to the Joint Typhoon Warning Center, whose first bulletin on Invest 91W follows ensembles from other global models that began reporting the system early Tuesday morning.
Guam is located 1,447 nautical miles northwest of where this weather system is now.
"Global models are not in agreement with a tropical cyclone developing from Invest 91W, however, JTWC will closely monitor for potential development due to favorable appearance in satellite analysis," the JTWC bulletin states.
The JTWC, which also predicts whether an area of convection (Invest) has among a low, medium, or high probability for forming into a storm, states in this first bulletin that "The potential for the development of a significant tropical cyclone within the next 24 hours is low."
The National Weather Service, which is the weather office with strong ties to the community and a field office in Guam, has not issued any special weather warnings or forecasts on Invest 91W as of 11:30 a.m. Tuesday.
The NWS Guam's weather forecast for the Mariana Islands for the week, as of 8:42 a.m. Tuesday is below: