Here comes the water, May snow pack and precipitation

by Wayne Mumford on May 16, 2009

Warm temperatures, clear skies and still some water that is not running coffee and cream. The time to jump on em’ is now, the temperatures are coming up for awhile, throw in a little rain here and there and runoff will be on it’s way.

Check this chart out! Holy cow, you think late April and early May have been cool? It’s still a couple weeks till we hit what I call the “free zone”, the time of year when the chance of snow diminishes to less than 50%. Of course, how long this snow pack holds up depends on the temperatures and precipitation over the next few weeks but it’s looking at least as good as last year right now.

MONTANA SNOTEL Snow Water Equivalent Update Graph

As of SATURDAY: MAY 16 , 2009

Basin Snow Water Equivalent Percent of Average
KOOTENAI RIVER BASIN Percentage Bar 112% 112%
FLATHEAD RIVER BASIN Percentage Bar 112% 112%
UPPER CLARK FORK RIVER BASIN Percentage Bar 141% 141%
BITTERROOT RIVER BASIN Percentage Bar 119% 119%
LOWER CLARK FORK RIVER BASIN Percentage Bar 123% 123%
JEFFERSON RIVER BASIN Percentage Bar 136% 136%
MADISON RIVER BASIN Percentage Bar 127% 127%
GALLATIN RIVER BASIN Percentage Bar 149% 149%
MISSOURI HEADWATERS Percentage Bar 137% 137%
HEADWATERS MISSOURI MAINSTEM Percentage Bar 159% 159%
SMITH, JUDITH, AND MUSSELSHELL RIVER BASINS Percentage Bar 167% 167%
SUN, TETON AND MARIAS RIVER BASINS Percentage Bar 123% 123%
MISSOURI MAINSTEM RIVER BASIN Percentage Bar 149% 149%
ST MARY AND MILK RIVER BASINS Percentage Bar 83% 83%
UPPER YELLOWSTONE RIVER BASIN Percentage Bar 130% 130%
WIND RIVER BASIN (WYOMING) Percentage Bar 112% 112%
SHOSHONE RIVER BASIN (WYOMING) Percentage Bar 109% 109%
BIGHORN RIVER BASIN (WYOMING) Percentage Bar 107% 107%
TONGUE RIVER BASIN (WYOMING) Percentage Bar 113% 113%
POWDER RIVER BASIN (WYOMING) Percentage Bar 109% 109%
LOWER YELLOWSTONE RIVER BASIN Percentage Bar 109% 109%
Legend: Percentage Bar Below 70% <70% Percentage Bar 70-90% 70-90% Percentage Bar 91-110% 91-110% Percentage Bar 111-130% 111-130% Percentage Bar Above 130% >130%

The NOAA climate guys have been pretty much on top of it. Its starting to look a little more seasonable for the next couple weeks according to the forecast and that’s just fine, spring is overdue.

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