NASA-NOAA’s Suomi NPP satellite passed over the eye of Typhoon Trami as it continued moving through the Northwestern Pacific Ocean.
On Sept. 27, 2018, the Visible Infrared Imaging Radiometer Suite (VIIRS) instrument aboard NASA-NOAA’s Suomi NPP satellite a visible image of Trami. VIIRS infrared imagery showed a wide and ragged eye and deep convection and developing thunderstorms around. That thunderstorm development increased during the morning hours.
At 11 a.m. EDT (1500 UTC) on Sept. 27, the eye of Typhoon Trami was located near latitude 22.2 degrees north and longitude 128.6 degrees east. That’s about 275 miles south-southeast of Kadena Air Base, Okinawa Island, Japan. Maximum sustained winds were near 90 knots (103.6 mph/166.7 kph).
The Joint Typhoon Warning Center or JTWC noted that “Trami remains in a weak steering environment while in between a subtropical ridge (elongated area of high pressure) located to the west and a second subtropical ridge located to the east.” Trami is expected to eventually move to the northeast but it is forecast to re-intensify before weakening.
Sep. 24, 2018 – NASA’s Terra Satellite Glares at the 37-Mile Wide Eye of Super Typhoon Trami
NASA’s Terra satellite provided a visible image of Super Typhoon Trami as it continued moving in a northwesterly direction in the Northwestern Pacific Ocean. Terra provided an amazing image of the large eye.
At 9:50 a.m. EDT (1350 UTC) on Sept. 24, the Moderate Resolution Imaging Spectroradiometer or MODIS instrument aboard NASA’s Terra satellite provided a visible-light image of Super Typhoon Trami in the North Western Pacific Ocean.
The MODIS image showed that Trami has a symmetric eyewall surrounding a 37 nautical-mile round eye.
At 11 a.m. EDT (1500 UTC) on Sept. 24 the center of Super Typhoon Trami was located near latitude 19.4 degrees north and longitude 129.5 degrees east. It is located 445 nautical miles south-southeast of Kadena Air Base, Okinawa Island, Japan.
The Joint Typhoon Warning Center noted that the storm is moving toward the wet-northwest and this general motion is expected to continue. Maximum sustained winds are near 149.6 mph (130 knots/240.8 kph) with higher gusts.
Trami is expected to peak at 167 mph (145 knots/268 kph) in the next day before beginning a weakening trend.
Sep. 21, 2018 – NASA Sees Areas of Strength in Tropical Storm Trami
NASA’s Terra satellite provided an infrared look at Tropical Storm Trami, located just over 100 miles from Guam on Sept. 21. Infrared data provides temperature information that showed two areas of the highest, coldest cloud tops and most powerful storms within the tropical storm.
NOAA’s National Weather Service (NWS) in Tiyan, Guam said that a flash flood watch is in effect for all of Guam and the northern Marianas. A small craft advisory remains in effect until 6 a.m. CHST local time on Sunday, Sept. 23.
However, the Tropical Storm Watch for Rota, Tinian and Saipan has been canceled. Because Tropical Storm Trami (28W) continues to move away from the Marianas the threat of damaging winds has ended.
At 2:20 a.m. EDT (0230 UTC) on Sept. 13, Moderate Resolution Imaging Spectroradiometer or MODIS instrument aboard NASA’s Aqua satellite analyzed Hurricane Florence in infrared light. MODIS found coldest cloud top temperatures in two large areas. One was around the center of circulation and the other was in a thick band of thunderstorms wrapping into the low-level center. Those temperatures were as cold as or colder than minus 80 degrees Fahrenheit (minus 112 degrees Celsius). Surrounding them were powerful storms with cloud tops as cold as or colder than minus 70 degrees Fahrenheit (minus 56.6 degrees Celsius).
NASA research has found that cloud top temperatures as cold as or colder than the 70F/56.6C threshold have the capability to generate heavy rainfall.
On Sept. 21, Trami was located near latitude 15.3 degrees north and longitude 142.9 degrees east. That’s about 175 miles west-northwest of Rota and about 180 miles northwest of Guam. Trami is moving northwest at 12 mph. It is expected to make a slight turn toward the west-northwest with little change in forward speed over the next 24 hours. Maximum sustained winds have increased to 40 mph. 28W is forecast to intensify through Saturday. Tropical storm force winds extend outward from the center up to 120 miles.
NWS issued a special weather statement for Micronesia that said areas of heavy showers and thunderstorms can be found near Trami and in the monsoon flow southwest of the storm. The westerly monsoonal flow across Yap State and the Republic of Palau will increase during the next few days. Showery weather and locally gusty winds are likely for Yap and Koror through this weekend. Sea and surf conditions may become hazardous at times.