Alert archive / Idaho / Special Weather Statements in 2014

Special Weather Statement, NWS Pocatello, ID

August 8, 2014Blaine County, Idaho

NWS Pocatello, ID issued this special weather statement at Aug 8, 2014, 4:54 PM MDT for Blaine County, Idaho. It was in force for 51 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: Aug 8, 2014, 4:54 PM MDT (22:54 UTC)
Expired: Aug 8, 2014, 5:45 PM MDT
In force: 51 min
Issued by: NWS Pocatello, ID

County Blaine County, ID

The radar

The Pocatello radar (KSFX), 94 km from the middle of the area, began a volume at 22:57 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

Boise Airport, ID (KBOI), launched 12:00Z, 10.9 hours before the alert went out and 202 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: 48 J/kg
Mixed-layer CIN: -343 J/kg
Mixed-layer LCL: 2026 m above ground
0-6 km bulk shear: 15 kt
0-1 km storm-relative helicity: 25 m²/s²
0-3 km storm-relative helicity: 32 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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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 Aug 8, 1:46 PM MDT, 3 hours 8 minutes earlier.

Area forecast discussion, Aug 8, 1:46 PM MDT, 3 hours 8 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE POCATELLO ID
146 PM MDT FRI AUG 8 2014

.DISCUSSION...

MOIST PATTERN CONTINUES ACROSS THE REGION. THUNDERSTORMS ARE
DEVELOPING ACROSS THE MOUNTAINS AND HIGHLANDS THIS AFTERNOON. THE
LOW PRESSURE SYSTEM RESPONSIBLE FOR PRODUCING WIDESPREAD
THUNDERSTORMS OVER THE PAST FEW DAYS HAS MOVED EAST OF THE REGION.
AS A RESULT...COVERAGE IS SOMEWHAT LOWER TODAY...MAINLY CONFINED TO
THE MOUNTAINS AND HIGHLANDS. HEAVY RAIN IS STILL A POSSIBILITY WITH
THESE STORMS AND A FLASH FLOOD WATCH REMAINS IN EFFECT FOR THE
BEAVER CREEK BURN AREA THROUGH TONIGHT.

A WEAK UPPER LEVEL SHORTWAVE TROUGH WILL MOVE THROUGH THE REGION ON
SATURDAY. THIS WILL FIRE OFF SEVERAL THUNDERSTORMS ACROSS THE ENTIRE
REGION SATURDAY AFTERNOON. HAVE INCREASED CHANCES BY ABOUT 10
PERCENT EVERYWHERE. DEBATING WHETHER OR NOT TO CONTINUE THE FLOOD
WATCH INTO SATURDAY. THE COVERAGE APPEARS TO BE A LITTLE LESS AROUND
THE SHOSHONE TO KETCHUM AREAS ON SATURDAY. WILL HOLD OFF ON
EXTENDING THE FLOOD WATCH AND ALLOW MID SHIFT TO REEVALUATE. ELSEWHERE
HEAVY RAIN WITH THUNDERSTORMS WILL REMAIN A STRONG POSSIBILITY.

MAY GET A BIT OF A REPRIEVE ON SUNDAY AND MONDAY AS AN UPPER LEVEL
RIDGE SETTLES IN OVER THE REGION. MONSOON MOISTURE WILL REMAIN IN
PLACE...HOWEVER THE RIDGE WILL HELP TO SQUASH ACTIVITY FROM
DEVELOPING IN MANY AREAS. BEST CHANCES FOR STORMS WILL BE IN THE
MOUNTAINS...BUT COVERAGE MAY REMAIN ISOLATED.

BY MIDDLE OF NEXT WEEK AN UPPER TROUGH OVER THE PACIFIC NORTHWEST
WILL HELP TO ENHANCE THUNDERSTORMS COVERAGE ONCE AGAIN. COULD BE
RATHER WET AGAIN FROM MIDWEEK ONWARD.

VALLE

&&

.AVIATION...ISOLATED TO SCATTERED THUNDERSTORMS EXPECTED THIS
AFTERNOON AND EARLY EVENING.  HAVE VICINITY THUNDERSTORMS AT ALL TAF
SITES.   BEST CHANCE ON STATION WOULD BE SUN.  EXPECT AFTERNOON
CONVECTION AGAIN ON SATURDAY.   WINDS WILL BE LIGHT OUTSIDE OF
CONVECTIVE ACTIVITY WITH VFR CONDITIONS EXPECTED.   ONLY NON VFR
CONDITIONS UNDER HEAVY THUNDERSTORM RAIN.
GK

&&

.FIRE WEATHER...VERY MOIST AIR MASS CONTINUES TO PERSIST OVER
SOUTHEAST IDAHO TODAY.   ISOLATED TO SCATTERED SHOWERS AND
THUNDERSTORMS EXPECTED ACROSS THE ENTIRE REGION EARLY THIS EVENING.
EXPECT THE SHOWERS AND THUNDERSTORMS TO AGAIN DEVELOP SATURDAY.
RELATIVELY HIGH HUMIDITY WILL CONTINUE INTO NEXT WEEK WITH PERHAPS
ANOTHER RELATIVELY WET PERIOD BY THE MIDDLE OF THE WEEK.
GK

&&

.PIH WATCHES/WARNINGS/ADVISORIES...
FLASH FLOOD WATCH UNTIL 11 PM MDT THIS EVENING IDZ031.

&&

In the hours before

Special weather statement, Aug 8, 4:09 PM MDT, 45 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE POCATELLO ID
409 PM MDT FRI AUG 8 2014

IDZ017-020-021-023-082315-
CARIBOU ID-BINGHAM ID-BUTTE ID-BONNEVILLE ID-POWER ID-BANNOCK
ID-BLAINE ID-
409 PM MDT FRI AUG 8 2014

THE NATIONAL WEATHER SERVICE IN POCATELLO HAS ISSUED A

SIGNIFICANT WEATHER ADVISORY FOR...
  EAST CENTRAL BLAINE COUNTY IN CENTRAL IDAHO
  SOUTHWESTERN BUTTE COUNTY IN EAST CENTRAL IDAHO
  NORTHWESTERN BANNOCK COUNTY IN SOUTHEAST IDAHO
  NORTHERN POWER COUNTY IN SOUTHEAST IDAHO
  CENTRAL BONNEVILLE COUNTY IN SOUTHEAST IDAHO
  BINGHAM COUNTY IN SOUTHEAST IDAHO
  NORTHWESTERN CARIBOU COUNTY IN SOUTHEAST IDAHO

AT 400 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
MODEST GUST FRONT SWEEPING SOUTH FROM INL TOWARD BLACKFOOT...FORT
HALL AND POCATELLO. THE GUST FRONT WAS MOVING SOUTHEAST AT 15 MPH
AND WIND GUSTS UP OF 30 TO 40 MPH ARE EXPECTED AS IT MOVES SOUTH
TOWARD POCATELLO THROUGH 515 PM MDT.

LOCATIONS IMPACTED THROUGH 515 PM MDT INCLUDE...
   ROCKFORD...
   BLACKFOOT...
   FORT HALL LINCOLN CREEK LODGE...
   FORT HALL EAGLE LODGE AND  PINGREE...
   SPRINGFIELD...
   FORT HALL YANDELL MOUNTAIN...
   FORT HALL CITY...
   FORT HALL PUTNAM LODGE...

LAT...LON 4346 11364 4333 11310 4328 11258 4343 11200
      4305 11165 4291 11223 4295 11275 4308 11328
TIME...MOT...LOC 2208Z 325DEG 14KT 4336 11344 4325 11303
          4321 11251 4334 11205

HUSTON

Special weather statement, Aug 8, 4:13 PM MDT, 41 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE POCATELLO ID
413 PM MDT FRI AUG 8 2014

IDZ017-031-082315-
LINCOLN ID-BLAINE ID-
413 PM MDT FRI AUG 8 2014

THE NATIONAL WEATHER SERVICE IN POCATELLO HAS ISSUED A

SIGNIFICANT WEATHER ADVISORY FOR...
  CENTRAL BLAINE COUNTY IN CENTRAL IDAHO
  NORTH CENTRAL LINCOLN COUNTY IN SOUTH CENTRAL IDAHO

AT 406 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 6 MILES NORTHWEST OF GANNETT...MOVING SLOWLY
SOUTHEAST AT 10 MPH.

WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH
HEAVY RAIN THROUGH 515 PM MDT.

LOCATIONS IMPACTED INCLUDE...
   GANNETT...
   PICABO...

LAT...LON 4336 11387 4313 11407 4335 11444 4350 11431
TIME...MOT...LOC 2213Z 302DEG 7KT 4338 11427

HUSTON

Special weather statement, Aug 8, 4:20 PM MDT, 34 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE POCATELLO ID
420 PM MDT FRI AUG 8 2014

IDZ018-020-031-032-082315-
BUTTE ID-BLAINE ID-CUSTER ID-
420 PM MDT FRI AUG 8 2014

THE NATIONAL WEATHER SERVICE IN POCATELLO HAS ISSUED A

SIGNIFICANT WEATHER ADVISORY FOR...
  SOUTHEASTERN CUSTER COUNTY IN CENTRAL IDAHO
  CENTRAL BLAINE COUNTY IN CENTRAL IDAHO
  SOUTHERN BUTTE COUNTY IN EAST CENTRAL IDAHO

AT 412 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF THUNDERSTORMS EXTENDING FROM 5 MILES NORTHWEST OF DARLINGTON
TO GROUSE TO SUN VALLEY...MOVING SOUTHEAST AT 15 MPH.

SMALL HAIL AND WIND GUSTS UP TO 45 MPH ARE EXPECTED WITH
THESE STORMS...ALONG WITH HEAVY RAIN.

LOCATIONS IMPACTED THROUGH 515 PM MDT INCLUDE...
   DARLINGTON...
   ARCO...

LAT...LON 4366 11450 4376 11389 4396 11362 4372 11292
      4344 11312 4343 11363 4346 11363 4348 11361
      4342 11374 4342 11390
TIME...MOT...LOC 2219Z 298DEG 16KT 4384 11347 4364 11361
          4361 11427

HUSTON

Local storm report, Aug 8, 4:23 PM MDT, 31 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO ID
423 PM MDT FRI AUG 08 2014

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

0423 PM     HAIL             1 ENE KETCHUM           43.70N 114.35W
08/08/2014  E0.25 INCH       BLAINE             ID   TRAINED SPOTTER

            PEA SIZE HAIL

&&

DPHELPS

Local storm report, Aug 8, 4:39 PM MDT, 15 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO ID
439 PM MDT FRI AUG 08 2014

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

0439 PM     HAIL             11 SSW OAKLEY           42.09N 113.94W
08/08/2014  E0.25 INCH       CASSIA             ID   TRAINED SPOTTER

            PEA SIZE HAIL WITH MINNOR STREET FLOODING

&&

DPHELPS

Special weather statement, Aug 8, 4:54 PM MDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE POCATELLO ID
454 PM MDT FRI AUG 8 2014

IDZ017-018-020-031-032-082345-
BUTTE ID-BLAINE ID-CUSTER ID-
454 PM MDT FRI AUG 8 2014

THE NATIONAL WEATHER SERVICE IN POCATELLO HAS ISSUED A

SIGNIFICANT WEATHER ADVISORY FOR...
  EXTREME SOUTHEASTERN CUSTER COUNTY IN CENTRAL IDAHO
  CENTRAL BLAINE COUNTY IN CENTRAL IDAHO
  WEST CENTRAL BUTTE COUNTY IN EAST CENTRAL IDAHO

AT 448 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 6 MILES WEST OF ARCO
TO BELLEVUE...MOVING SLOWLY SOUTHEAST AT 10 MPH.

SMALL HAIL AND WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THESE
STORMS...ALONG WITH HEAVY RAINFALL AND THE POTENTIAL FOR RAPID RISES
ON SMALL CREEKS AND STREAMS THROUGH 545 PM MDT.

LOCATIONS IMPACTED INCLUDE...
   GANNETT...
   ARCO...
   PICABO...

LAT...LON 4352 11312 4350 11347 4340 11376 4327 11402
      4341 11433 4360 11418 4368 11389 4375 11336
TIME...MOT...LOC 2251Z 300DEG 8KT 4365 11341 4364 11378
          4355 11407 4343 11421

HUSTON

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 7, 8:13 PM MDT	Special Weather Statement	PIH		47 min
Aug 8, 3:06 PM MDT	Special Weather Statement	PIH	Camas	54 min
Aug 8, 3:13 PM MDT	Special Weather Statement	PIH	Camas	62 min
Aug 8, 3:47 PM MDT	Flash Flood Warning	PIH	Blaine	3 hr
Aug 8, 4:05 PM MDT	Special Weather Statement	PIH	Cassia	55 min
Aug 8, 4:09 PM MDT	Special Weather Statement	PIH	Bingham	66 min
Aug 8, 4:13 PM MDT	Special Weather Statement	PIH	Blaine	62 min
Aug 8, 4:20 PM MDT	Special Weather Statement	PIH	Butte	55 min
Aug 8, 4:34 PM MDT	Flash Flood Warning	PIH	Cassia	3 hr
Aug 8, 5:02 PM MDT	Special Weather Statement	PIH	Caribou, Oneida	58 min
Aug 8, 5:44 PM MDT	Flash Flood Warning	PIH	Bannock	3 hr

Nearby

Special Weather Statements in Idaho, 2014 Every special weather statement in 2014

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.