May 13, 2004 1414 UTC	May 14, 2004 1319 UTC
May 17, 2004 1209 UTC (PRECIPITATION)	May 17, 2004 1209 UTC (IR)

The main islands of the Philippines have thus far been spared the brunt of Super Typhoon Nida (known as Dindo in the Philippines) though the eastern island of Catanduanes was not as fortunate. A tropical depression formed on the 13th of May 2004 about 500 km (300 miles) east of the southern Philippines island of Mindanao just northwest of Palau in the Caroline Islands and initially moved west. By late the next day on the 14th, the system had already become a minimal typhoon (named Nida) with maximum sustained winds estimated at 65 knots (75 mph) by the Joint Typhoon Warning Center and was now moving almost due north. On the 15th, Nida continued to intensify reaching 90 knots (104 mph) and settled into a northwestly track. The next 24 hours saw Nida steadily intensify becoming a super typhoon with maximum sustained winds of 140 knots (161 mph) on the 16th as it came dangerously close to the central Philippines island of Samar. Samar avoided a direct hit, but Nida slammed into the island of Catanduanes the next day on the morning of the 17th where there were reports of deadly mudslides. As of the 17th Nida was located roughly 200 miles east of Luzon in the Philippine Sea and moving north northwest. On it's present course the eye is not expected to cross Luzon.

The Tropical Rainfall Measuring Mission (TRMM) satellite captured a series of images showing the evolution of Nida. The first image was taken at 14:14 UTC on 13 May 2004. It shows the horizontal distribution of rain intensity. Rain rates in the center swath are from the TRMM Precipitation Radar (PR), while rain rates in the outer swath are from the TRMM Microwave Imager (TMI). The rain rates are overlaid on infrared (IR) data from the TRMM Visible Infrared Scanner (VIRS). At the time of the first image, Nida still just a tropical storm. TRMM shows that the storm is still organizing with no evidence of an eye yet. Mainly moderate (green) to light (blue areas) rain rates are present near the center. The next image taken at 13:19 UTC on the 14th shows Nida becoming better organized. More banding is evident in the rain field (green arcs) though the eye is still poorly defined. The final image was taken at 12:09 UTC on May 17th after Nida had passed over Catanduanes. Though the PR did not pass over the center, the TMI shows a nearly complete well-formed eye with embedded areas of intense rain (red areas). Having just passed over the island of Catanduanes, the center is likely showing the effects of being disrupted by the island's terrain.

Images produced by Hal Pierce (SSAI/NASA GSFC) and caption by Steve Lang (SSAI/NASA GSFC).