Alert archive / Idaho / Special Weather Statements in 2014

Special Weather Statement, NWS Pocatello, ID

July 30, 2014Camas County, Idaho

NWS Pocatello, ID issued this special weather statement at Jul 30, 2014, 2:12 PM MDT for Camas County, Idaho. It was in force for 48 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: Jul 30, 2014, 2:12 PM MDT (20:12 UTC)
Expired: Jul 30, 2014, 3:00 PM MDT
In force: 48 min
Issued by: NWS Pocatello, ID

County Camas County, ID

The radar

The Boise radar (KCBX), 136 km from the middle of the area, began a volume at 20:12 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, 8.2 hours before the alert went out and 133 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2552 m above ground
0-6 km bulk shear: 2 kt
0-1 km storm-relative helicity: 31 m²/s²
0-3 km storm-relative helicity: 66 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 Jul 30, 1:34 PM MDT, 38 minutes earlier.

Area forecast discussion, Jul 30, 1:34 PM MDT, 38 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE POCATELLO ID
134 PM MDT WED JUL 30 2014

.SHORT TERM...THE 500 MB LEVEL LOOKS TO RESEMBLE A BROAD UPPER HIGH
PRESSURE RIDGE WITH AN EMBEDDED DISTURBANCE MOVING FROM THE IDAHO
PANHANDLE INTO WESTERN MONTANA EARLY THIS AFTERNOON WHERE ISOLATED
LIGHTNING HAS BEEN DETECTED. SOUTHERN EXTENT OF THE WAVE REACHES
INTO THE CENTRAL MOUNTAINS AROUND STANLEY. THIS AREA ALSO HAS THE
BEST UPPER LEVEL SUPPORT FOR THUNDERSTORMS THIS EVENING. A RED
FLAG WARNING FOR LIGHTING REMAINS IN EFFECT FOR THE CENTRAL
MOUNTAINS UNTIL 9 PM MDT. THE 700MB WIND FIELD IS BROKEN INTO TWO
ANTICYCLONIC CIRCULATION CENTERS...ONE OVER MONTANA AND THE OTHER
OVER EASTERN OREGON. AXIS OF CONTRACTION LOOKS LIKE IT LIES ALONG
THE SOUTH CENTRAL AND CARIBOU HIGHLANDS. BOTH OF THOSE AREAS
SHOULD FAVOR AT LEAST ISOLATED THUNDERSTORMS THIS EVENING.
THURSDAY...THE 700MB CIRCULATION OVER OREGON MOVES OVER NORTH
CENTRAL IDAHO WHICH STILL LEAVES SOME ELEMENT OF OROGRAPHIC LIFT
AND/OR MID LEVEL CONVERGENCE FROM MONIDA PASS BACK TOWARDS MACKAY
AND STANLEY AREA...AND THE SOUTH CENTRAL HIGHLANDS. THE NORTHERLY
MID LEVEL WINDS MAY MOVE ISOLATED THUNDERSTORMS INTO THE ARCO
DESERT THURSDAY AFTERNOON AND EVENING. THE GFS MODEL HINTS AT A
SLIGHT CONTRIBUTION OF MOISTURE FROM THE REMNANTS OF TROPICAL
DISTURBANCE HERNAN GETTING CAUGHT IN FLOW OVER CENTRAL IDAHO.
LOOKS LIKE A MINIMAL HIGH LEVEL CONTRIBUTION THAT DOES NOT REALLY
BOOST PRECIPITABLE WATER VALUES MUCH.

.LONG TERM...A DISTURBANCE OFF THE PACIFIC CROSSES INTO THE GREAT
BASIN FRIDAY THAT SHOULD BOOST AFTERNOON THUNDERSTORM ACTIVITY A
BIT. THE EXTENDED MODELS ARE SUGGESTING ANOTHER SURGE OF MONSOON
MOISTURE AROUND MONDAY. OTHERWISE THERE IS A SLIGHT CHANCE OF
AFTERNOON THUNDERSTORMS EACH DAY. RS

&&

.AVIATION...MONSOON MOISTURE REMAINS...BRINGING SHOWERS AND
THUNDERSTORMS IN THE AFTERNOONS. BRIEF HEAVY DOWNPOURS AND GUSTY
ERRATIC WINDS ARE POSSIBLE NEAR THUNDERSTORMS. OTHERWISE...LIGHT
WINDS AND VFR CONDITIONS ARE EXPECTED THROUGH THE PERIOD.
EP

&&

.FIRE WEATHER...MONSOON MOISTURE IS EXPECTED TO REMAIN IN PLACE
THROUGH THE WEEKEND. ISOLATED TO SCATTERED THUNDERSTORMS WILL EXIST
EACH AFTERNOON. HEAVY DOWNPOURS...FREQUENT LIGHTNING...AND GUSTY
ERRATIC WINDS ARE POSSIBLE UNDER AND NEAR THUNDERSTORMS.
EP

&&

.PIH WATCHES/WARNINGS/ADVISORIES...
RED FLAG WARNING UNTIL 9 PM MDT THIS EVENING IDZ422-475-476.

&&

In the hours before

Special weather statement, Jul 30, 1:37 PM MDT, 35 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE POCATELLO ID
137 PM MDT WED JUL 30 2014

IDZ031-302015-
BLAINE ID-
137 PM MDT WED JUL 30 2014

THE NATIONAL WEATHER SERVICE IN POCATELLO HAS ISSUED A

SIGNIFICANT WEATHER ADVISORY FOR...
  WEST CENTRAL BLAINE COUNTY IN CENTRAL IDAHO

UNTIL 215 PM MDT

AT 135 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 10 MILES WEST OF KETCHUM..MOVING SOUTHEAST AT 10
MPH.

WIND GUSTS UP TO 35 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH
HEAVY RAIN AND FREQUENT DANGEROUS LIGHTNING.

LOCATIONS IMPACTED INCLUDE...
  RURAL WESTERN BLAINE COUNTY...BEAVER CREEK BURN SCAR...

LAT...LON 4365 11467 4367 11469 4376 11460 4357 11422
      4338 11453 4340 11455 4343 11455 4346 11452
      4348 11452 4350 11457 4353 11460 4356 11460
      4360 11469
TIME...MOT...LOC 1936Z 303DEG 8KT 4364 11457

EP

Special weather statement, Jul 30, 2:12 PM MDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE POCATELLO ID
212 PM MDT WED JUL 30 2014

IDZ031-302100-
BLAINE ID-
212 PM MDT WED JUL 30 2014

THE NATIONAL WEATHER SERVICE IN POCATELLO HAS ISSUED A

SIGNIFICANT WEATHER ADVISORY FOR...
  WEST CENTRAL BLAINE COUNTY IN CENTRAL IDAHO

UNTIL 300 PM MDT

AT 209 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 11 MILES WEST OF HAILEY..MOVING SOUTHEAST AT 10
MPH.

WIND GUSTS UP TO 35 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH
HEAVY RAIN AND FREQUENT DANGEROUS LIGHTNING.

LOCATIONS IMPACTED INCLUDE...
   HAILEY...BEAVER CREEK BURN SCAR

LAT...LON 4366 11467 4374 11449 4346 11415 4339 11454
      4343 11455 4346 11452 4348 11452 4350 11457
      4353 11460 4356 11460 4360 11469
TIME...MOT...LOC 2012Z 328DEG 9KT 4355 11451

EP

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 29, 6:22 PM MDT	Special Weather Statement	PIH	Butte, Clark	53 min
Jul 29, 8:01 PM MDT	Special Weather Statement	PIH	Minidoka	59 min
Jul 30, 3:20 AM MDT	Red Flag Warning	PIH	Blaine, Boise, Butte, Custer, Idaho, Lemhi and 1 more	17 hr
Jul 30, 1:37 PM MDT	Special Weather Statement	PIH	Camas	38 min
Jul 30, 2:28 PM MDT	Areal Flood Advisory	PIH	Bear Lake	4 hr
Jul 30, 2:58 PM MDT	Flash Flood Warning	PIH	Blaine	3 hr
Jul 30, 3:58 PM MDT	Special Weather Statement	PIH	Blaine	62 min
Jul 30, 5:14 PM MDT	Special Weather Statement	PIH	Camas	91 min

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.