The Weiser River came out of its banks on the 14th and continued flooding areas around Weiser, Idaho through the 16th.
Every event with a place to put it. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS BOI wrote it up.
The Weiser River came out of its banks on the 14th and continued flooding areas around Weiser, Idaho through the 16th.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Boise, ID wrote its last area forecast discussion before the first event at Mar 15, 1:57 PM MST, 5 hours 3 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE BOISE ID 257 PM MDT TUE MAR 15 2011 .SHORT TERM...PRECIPITATION TO CONTINUE TONIGHT INTO WEDNESDAY. INTERESTING I/R SATELLITE IMAGERY THIS AFTERNOON. WARM-FRONTAL CLOUD BAND AND LIGHT TO MODERATE PCPN...MAINLY RAIN...COVERING WRN IDAHO AS OF 19Z. JET SEGMENT COMING OFF THE PACIFIC NEAR 42N APPARENTLY ENHANCING CLOUDS IN OREGON. THE ENHANCED CLOUDS AND ASSOCIATED HEAVIER PCPN WILL SETTLE OVER OUR CWA TONIGHT THEN SLOWLY SHIFT ESEWD WEDNESDAY AS A COLD FRONT COMES THROUGH. FROPA IN ERN OREGON WED MORNING...SWRN IDAHO AROUND NOON. AFTER FROPA THE STEADY PCPN SHOULD DECREASE TO SCATTERED SHOWERS. INSTABILITY LOOKS TOO WEAK TO SUUPERT THUNDERSTORMS. WE DO NOT SEE A WIND EVENT WITH THE COLD FRONT AS SURFACE PRESSURE GRADIENT PROGGED TO REMAIN WEAK. BUT BRIEF GUSTS 30 TO 40 MPH ARE EXPECTED WITH FROPA. HEIGHT GRADIENT ALOFT IS TIGHTER AND A STRONGER FROPA IS EXPECTED AT HIGHER ELEVATIONS. PARTIAL CLEARING...COLDER AIR... AND LIGHTER WINDS WX WED NIGHT WILL LEAD TO PATCHY FOG THURSDAY MORNING. .LONG TERM...THURSDAY NIGHT THROUGH TUESDAY...ACTIVE WEATHER PATTERN WILL CONTINUE INTO EARLY NEXT WEEK. SHOWERS WILL CONTINUE THURSDAY NIGHT INTO FRIDAY UNDER MOIST SOUTHWESTERLY FLOW AHEAD OF THE NEXT UPPER LEVEL LOW PRESSURE SYSTEM. UPPER LEVEL LOW SHIFTS SOUTH ALONG THE COAST FRIDAY AND SATURDAY BEFORE MOVING ONSHORE SUNDAY. MODELS REMAIN IN AGREEMENT WITH PRECIPITATION SPREADING EAST ACROSS THE AREA SATURDAY AND THUS HAVE INCREASED POPS. HOWEVER...MODELS REMAIN INCONSISTENT WITH WHERE AND WHEN THE LOW SHIFTS INLAND EARLY NEXT WEEK. 12Z RUNS SHOWING THE LOW CONTINUING SOUTH ALONG THE COAST THEN SHIFTING INLAND OVER SOUTHERN CALIFORNIA EARLY MONDAY. THIS WOULD MAKE FOR SLIGHTLY WARMER TEMPERATURES THAN PREVIOUS MODEL RUNS. SOUTHWESTERLY FLOW AHEAD OF THE LOW WILL CONTINUE TO TRANSPORT MOISTURE /PRECIPITATION/ NORTHWARD ACROSS THE AREA THROUGH MONDAY. && .AVIATION...BREAK IN THE PRECIPITATION THIS AFTERNOON WILL BE SHORT LIVED WITH MORE WIDESPREAD MVFR RAIN ADVANCING FROM THE WEST. EXPECT WIDESPREAD MVFR CEILINGS AND MOUNTAIN OBSCURATION TO CONTINUE THROUGH WEDNESDAY AFTERNOON. ELEVATIONS ABOVE 5K FT MSL WILL EXPERIENCE IFR CONDITIONS IN SNOW TONIGHT. PRECIPITATION WILL BE MODERATE AT TIMES. LIGHT E TO SE SFC WINDS. STRONG SOUTHWESTERLY WINDS ALOFT. && .HYDROLOGY...MINOR FLOODING IS FORECAST FOR SECTIONS OF THE WEISER RIVER BY LATE TONIGHT. THE WEISER RIVER CONTINUES NEAR BANKFULL THIS AFTERNOON...BUT RAIN AND MELTING SNOW WILL CAUSE ADDITIONAL RISES TONIGHT. FLOOD STAGE NEAR WEISER IS 9.5 FEET AND WE NOW EXPECT THE RIVER TO CREST BETWEEN 10 AND 11 FEET ON WEDNESDAY MORNING. COLDER TEMPERATURES AND SNOW INSTEAD OF RAIN WILL OCCUR ABOVE 5500 FEET WHICH WILL LIMIT RUNOFF INTO STREAMS ORIGINATING AT HIGHER ELEVATIONS. && .BOI WATCHES/WARNINGS/ADVISORIES... ID...NONE. OR...NONE. && WEATHER.GOV/BOISE SHORT TERM...LC LONG TERM....JDS/CB AVIATION.....JDS HYDROLOGY....JB
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE BOISE ID 543 AM MDT TUE MAR 15 2011 IDZ033-161200- UPPER WEISER RIVER- 543 AM MDT TUE MAR 15 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF WEST CENTRAL IDAHO. .DAY ONE...TODAY AND TONIGHT A FLOOD WARNING IS IN EFFECT FOR THE WEISER RIVER NEAR WEISER AFFECTING WASHINGTON COUNTY. PLEASE REFER TO THE FLOOD WARNING PRODUCT FOR FURTHER INFORMATION. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY THE FLOOD WARNING IS IN EFFECT THROUGH THURSDAY AFTERNOON...OR UNTIL THE WARNING IS CANCELLED. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED. IDZ011>016-028>030-ORZ061>064-161200- WEST CENTRAL MOUNTAINS-LOWER TREASURE VALLEY ID-BOISE MOUNTAINS- UPPER TREASURE VALLEY-SOUTHWEST HIGHLANDS-WESTERN MAGIC VALLEY- CAMAS PRAIRIE-OWYHEE MOUNTAINS-SOUTHERN TWIN FALLS COUNTY- HARNEY COUNTY-BAKER COUNTY-MALHEUR COUNTY- LOWER TREASURE VALLEY OR- 543 AM MDT TUE MAR 15 2011 /443 AM PDT TUE MAR 15 2011/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTH CENTRAL IDAHO...SOUTHWEST IDAHO...WEST CENTRAL IDAHO...NORTHEAST OREGON AND SOUTHEAST OREGON. .DAY ONE...TODAY AND TONIGHT NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED.
The national radar mosaic for the moment the first event began.
1 flood. Local standard time, as filed.
Moderate flooding occured on the Weiser River around Weiser, Idaho with flooding of houses and buildings. The flooding also closed U.S Highway 95 and county roads around the area. The river crested at 12.1 feet which is about 2.5 feet above flood stage.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Idaho in 2011Every state in 2011This day in weather historyWarnings in Idaho, March 2011
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 286157.