.. As the long term weather forecast now stands, early fishing will be good and the Summer will arrive early and knock a hole in many favorite locations on streams such as the Firehole River and Nez Perce Creek. Hatches promise to be earlier, and depending on the bugs, may in fact be more prolific. We'll keep you posted.
Firehole River is currently running at about 150 cfs above seasonal average. The Madison River is churning along at nearly 200 cfs above seasonal average. The elk Island Glide below 'Dipper Cliff' and Firehole Falls is "bank full" and rising, (see Platial map below.)
.. The snow water equivalents in the river basins are very low. The snow pack in West Yellowstone is 0% of the average. The Madison River Basin is 69% of average. The Gallatin River Basin is 76% of average. The upper Yellowstone Basin, (Yellowstone Park,) is 70% of average.
.. Unless there is a flurry of tremendous snowstorms in the upper elevations the rivers will become low, slow, and warm in a hurry. To keep tabs of the snow pack and the water equivalents check out the USDA Snowtel Site.