Multiple photographs were received of a funnel cloud west of American Falls between 1 pm and 1:30 pm MDT on April 11th.
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The episode as NWS PIH wrote it up.
Multiple photographs were received of a funnel cloud west of American Falls between 1 pm and 1:30 pm MDT on April 11th.
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 Pocatello, ID wrote its last area forecast discussion before the first event at Apr 11, 12:23 AM MST, 11 hours 37 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE POCATELLO ID 123 AM MDT MON APR 11 2016 .SHORT TERM...TODAY THROUGH WEDNESDAY NIGHT. BROAD CYCLONIC CIRCULATION SEEN ON WV THIS MORNING NEAR THE FOUR CORNERS AREA. UPPER RIDGING IS PRESENT OVER THE CASCADES WITH A TROUGH JUST ALONG THE COASTAL WATERS. MODELS WEAKEN THE TROUGH AS IT TRIES TO PUSH THROUGH THE RIDGE. DESPITE HAVING WEAK DYNAMICS...WE STILL SHOULD SEE CONVECTION RESUME AGAIN THIS AFTERNOON AND EVENING WITH MODELS PLAYING WITH SOME ADDED LOW-LEVEL MOISTURE CONTRIBUTING TO HEIGHTENED INSTABILITY. WE START TO SEE THE UPPER RIDGE SHIFT TO THE EAST ON TUESDAY BUT WE STILL KEEP A WARM UNSTABLE AIRMASS IN PLACE THAT WILL KEEP THUNDER IN THE FORECAST FOR TUESDAY AFTERNOON/EVENING. A WEAK SHORTWAVE WILL LIFT ACROSS THE FORECAST AREA WEDNESDAY MORNING. SNOW LEVELS DROP FROM AROUND 9500 FT TO 7000 FT AS THE WAVE PASSES...STILL HIGH ENOUGH TO KEEP RAIN ON THE VALLEY FLOORS. NAM/GFS PLACE HEAVY BANDED PRECIP OVER THE SOUTHEASTERN REACHES OF OUR FORECAST AREA...MAINLY FROM FRONTOGENETICAL FORCING...BUT MODELS ARE NOT QUITE IN AGREEMENT WITH THE TIMING. NAM FAVORS THIS WILL BEGIN 00Z THURSDAY AND GFS 12Z THURSDAY. HINSBERGER .LONG TERM...THURSDAY THROUGH NEXT MONDAY. THE ECMWF AND GFS HAVE REMAINED STEADFAST WITH THE IDEA OF DUMPING A BROAD COLD UPPER LOW INTO THE NRN GREAT BASIN THURSDAY/THURSDAY NIGHT WHICH LINGERS ABOUT THE REGION THROUGH SATURDAY. HAVE BOOSTED THE PRECIPITATION POTENTIAL THURSDAY AND FRIDAY AND THEN ALLOWED THE CHANCES FOR PRECIPITATION TO TRAIL OFF RUNNING INTO SATURDAY AND SUNDAY AS THE LOW DRIFTS SOUTH INTO THE 4-CORNERS REGION AND A DEVELOPING RIDGE TAKES FIRM CONTROL BY ABOUT MONDAY. DAYTIME TEMPS BOTTOM OUT IN THE MID 40S THURSDAY AND FRIDAY AND THEN WARM BACK INTO THE UPPER 60S BY MONDAY...A FAIRLY DRAMATIC SWING OF 10 TO 15 DEG BELOW AND ABOVE NORMAL. HUSTON && .AVIATION...SUNDAY AFTERNOONS CONVECTION WAS DISSIPATING RATHER RAPIDLY OVERNIGHT AND WITH THE LATEST NUMERICAL MODELS SWEEPING THE NEXT INCOMING LOW EAST THROUGH NRN BAJA THE DYNAMICAL FORCING DOES NOT APPEAR TO BE AS SUBSTANTIAL AS SUNDAY. UPPER LEVEL LIFT AND RESIDUAL MOISTURE WILL LIKELY SUPPORT AFTERNOON CONVECTION ONCE AGAIN TODAY...BUT MOST OF THE ACTIVITY IS EXPECTED TO FAVOR ELEVATED TERRAIN. THE CURRENT FORECAST TREND OF AFTERNOON/EVENING CONVECTION WITH VFR CIGS AND VCNTY THUNDERSTORMS LOOKS GREAT WITH NO SIGNIFICANT CHANGES ANTICIPATED FOR THE 12Z ISSUANCE. HUSTON && .PIH WATCHES/WARNINGS/ADVISORIES... NONE. &&
The Pocatello radar (KSFX), 53 km away, was scanning. The volume nearest the first event began at 19:01 UTC.
1 funnel cloud. Local standard time, as filed.
Multiple photographs were received of a funnel cloud west of American Falls between 1 pm and 1:30 pm MDT on April 11th.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Idaho in 2016Every state in 2016This day in weather historyWarnings in Idaho, April 2016
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: 631201.