Alert archive / Idaho / Special Weather Statements in 2016

Special Weather Statement, NWS Pocatello, ID

October 2, 2016Bingham County, Idaho

NWS Pocatello, ID issued this special weather statement at Oct 2, 2016, 6:05 PM MDT for Bingham County, Idaho. It was in force for 40 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Oct 2, 2016, 6:05 PM MDT (00:05 UTC)
Expired: Oct 2, 2016, 6:45 PM MDT
In force: 40 min
Issued by: NWS Pocatello, ID

County Bingham County, ID

The radar

The Pocatello radar (KSFX), 26 km from the middle of the area, began a volume at 00:06 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Salt Lake City I, UT (KSLC), launched 00:00Z, 0.1 hours before the alert went out and 282 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 161 J/kg
Mixed-layer CIN: -14 J/kg
Mixed-layer LCL: 3185 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 24 m²/s²
0-3 km storm-relative helicity: 131 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement went out, 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 this special weather statement went out at Oct 2, 1:15 PM MDT, 4 hours 50 minutes earlier.

Area forecast discussion, Oct 2, 1:15 PM MDT, 4 hours 50 minutes before

Area Forecast Discussion
National Weather Service Pocatello ID
115 PM MDT SUN OCT 2 2016

.SHORT TERM...Tonight through Tuesday.

A warm front moved north through the area this morning. This spawned
few strong storms. Much of southeast Idaho has been in the warm
sector ahead of a powerful cold front which will arrive this
evening. Showers and thunderstorms will develop ahead of the front
in the afternoon instability. The WRF appears to have the best
handle on the situation given how convection appears to be
developing on satellite so far. It is also a compromise between the
NAM which has less convection tonight and the GFS which has is more
widespread. Expect the cold front to move through the region during
the evening hours with strong to marginally severe thunderstorms
possible along and ahead of the front. Then expect a break in the
precipitation overnight as we await the arrival of the associated
low pressure area. The low will arrive by early Monday morning. This
will pour much colder air into the region along with windy
conditions. Most of the precipitation with this system will fall
across the higher elevations above 7000 feet and across the central
Idaho mountains. Elevations above 7000 feet will see several inches
of snow and a winter weather advisory is in effect. In the valleys,
including the Snake Plain and Magic Valley, we will see a few rain
showers along with very windy conditions and much cooler
temperatures. A wind advisory is in effect for these areas where
sustained winds of 25 to 30 mph are likely along with gusts to
around 45 mph. This storm should exit the area Monday night. We will
spend most of Tuesday awaiting the next system with some
precipitation moving into the area late in the afternoon.

Valle

.LONG TERM...Tuesday night through next Sunday. Influence of
departing upper low will still be felt Tuesday night, mainly over
the Eastern Highlands. Snow levels will remain around 6000 to 7000
ft. GFS and ECMWF drop a little more energy in the broadened upper
trough over the Northern Rockies, and will likely keep chance to
likely PoPs for the area at least until Friday. Aside from
increasing PoPs slightly for the latter part of the week, very
little changes to the forecast. Hinsberger

&&

.AVIATION...On-going convection will likely linger into the evening
hours as we remain in the warm sector of this early fall storm.
Anticipate surface winds to eventually sharply increase as we become
better mixed in the low-levels. Convection could approach severe
with large hail and strong outflow winds, but lacking certainty on
timing and location of development this afternoon. Thus just keeping
VCTS mention. Cold front is expected to pass through early evening
from west to east and should see abrupt wind shifts as it passes.
The frontal passage may offer a brief hold on showers, but still no
solid signal of that is provided among the models. Outside of
showers, expect conditions to remain VFR, except for KSUN, where
ceilings may drop to MVFR early tomorrow morning. Low-level wind
shear potential is possible overnight if we de-couple as 2k ft winds
will be around 40 to 50 kts. Hinsberger

&&

.PIH Watches/Warnings/Advisories...
Wind Advisory from noon to 9 PM MDT Monday for IDZ017-020>022.

Winter Weather Advisory from 6 AM Monday to midnight MDT Monday
night for IDZ018-019-023-025-031-032.

&&

In the hours before

Special weather statement, Oct 2, 4:30 PM MDT, 1 hour 35 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE POCATELLO ID
430 PM MDT SUN OCT 2 2016

IDZ020-021-022315-
LOWER SNAKE RIVER PLAIN ID-UPPER SNAKE RIVER PLAIN ID-
430 PM MDT SUN OCT 2 2016

...STRONG THUNDERSTORM OVER SHELLEY MOVING NORTH THROUGH IDAHO
FALLS AROUND 500 PM MDT...

AT 428 PM MDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM OVER
SHELLEY...MOVING NORTH AT 35 MPH.

BRIEF HEAVY RAIN...HALF INCH HAIL AND WIND GUSTS UP TO 50 MPH ARE
POSSIBLE WITH THIS STORM AS IT MOVES THROUGH IDAHO FALLS AROUND 500
PM MDT.

LOCATIONS IMPACTED INCLUDE...
IDAHO FALLS...RIGBY...GOSHEN...LORENZO...AMMON...SHELLEY...IONA...
UCON...MENAN...ROBERTS...FIRTH...LEWISVILLE...ARCHER...BASALT...
OSGOOD AND THORNTON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 10 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

&&

LAT...LON 4324 11213 4326 11230 4385 11217 4375 11174
TIME...MOT...LOC 2228Z 197DEG 29KT 4338 11216

HUSTON

Local storm report, Oct 2, 4:34 PM MDT, 1 hour 31 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO ID
434 PM MDT SUN OCT 02 2016

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0434 PM     HAIL             SHELLEY                 43.38N 112.12W
10/02/2016  M0.25 INCH       BINGHAM            ID   PUBLIC

&&

MH

Local storm report, Oct 2, 5:04 PM MDT, 1 hour 1 minute before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO ID
504 PM MDT SUN OCT 02 2016

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0434 PM     HAIL             ROBERTS                 43.72N 112.13W
10/02/2016  E0.88 INCH       JEFFERSON          ID   PUBLIC

&&

MH

Local storm report, Oct 2, 5:15 PM MDT, 50 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO ID
515 PM MDT SUN OCT 02 2016

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0509 PM     FUNNEL CLOUD     ROBERTS                 43.72N 112.13W
10/02/2016                   JEFFERSON          ID   TRAINED SPOTTER

&&

JMESSICK

Local storm report, Oct 2, 5:46 PM MDT, 19 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO ID
546 PM MDT SUN OCT 02 2016

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0525 PM     HAIL             NW ROBERTS              43.72N 112.13W
10/02/2016  M1.00 INCH       JEFFERSON          ID   TRAINED SPOTTER

&&

JMESSICK

Special weather statement, Oct 2, 6:05 PM MDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE POCATELLO ID
605 PM MDT SUN OCT 2 2016

IDZ020-021-030045-
LOWER SNAKE RIVER PLAIN ID-UPPER SNAKE RIVER PLAIN ID-
605 PM MDT SUN OCT 2 2016

...HEAVY SHOWERS WITH THUNDERSTORMS NEAR PINGREE MOVING
NORTH THROUGH 645 PM MDT...

AT 601 PM MDT...DOPPLER RADAR WAS TRACKING AN AREA OF THUNDERSTORMS
NEAR ROCKFORD...OR 10 MILES WEST OF BLACKFOOT...MOVING NORTH AT 35
MPH.

HEAVY RAINFALL WAS OCCURRING WITH THESE STORMS...AND MAY LEAD TO
LOCALIZED FLOODING ALONG WITH WIND GUSTS TO 35 MPH AS THEY MOVE
NORTH...WEST OF INTERSTATE 15 THROUGH 645 PM MDT.

LOCATIONS IMPACTED INCLUDE...
ROCKFORD...MORELAND...PINGREE AND KETTLE BUTTE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 10 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

&&

LAT...LON 4302 11248 4302 11268 4369 11255 4364 11214
TIME...MOT...LOC 0001Z 192DEG 32KT 4318 11255

HUSTON

The office that day

Everything else NWS Pocatello, ID issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Oct 2, 6:09 PM MDT	Special Weather Statement	PIH	Bingham, Power	36 min
Oct 2, 6:13 PM MDT	Special Weather Statement	PIH	Bannock	32 min
Oct 2, 6:27 PM MDT	Severe Thunderstorm Warning	PIH	Bannock, Bingham, Bonneville, Caribou	33 min
Oct 2, 6:44 PM MDT	Tornado Warning	PIH	Bannock, Bingham, Caribou	31 min
Oct 2, 7:09 PM MDT	Tornado Warning	PIH	Bingham, Bonneville, Caribou	51 min
Oct 2, 7:34 PM MDT	Tornado Warning	PIH	Bannock, Bingham, Caribou	43 min
Oct 2, 8:07 PM MDT	Special Weather Statement	PIH	Teton	23 min
Oct 2, 8:17 PM MDT	Tornado Warning	PIH	Bingham, Bonneville, Caribou, Teton	21 min
Oct 2, 8:51 PM MDT	Special Weather Statement	PIH	Teton	39 min
Oct 2, 9:35 PM MDT	Special Weather Statement	PIH	Oneida	40 min

Nearby

Special Weather Statements in Idaho, 2016 Every special weather statement in 2016

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.