Alert archive / Idaho / Special Weather Statements in 2011

Special Weather Statement, NWS Pocatello, ID

August 5, 2011Bannock County, Power County, Idaho

NWS Pocatello, ID issued this special weather statement at Aug 5, 2011, 12:16 AM MDT for Bannock County, Power County, Idaho. It was in force for 44 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 5, 2011, 12:16 AM MDT (06:16 UTC)
Expired: Aug 5, 2011, 1:00 AM MDT
In force: 44 min
Issued by: NWS Pocatello, ID

Counties Bannock County, ID, Power County, ID

The radar

The Pocatello radar (KSFX), 43 km from the middle of the area, began a volume at 06:19 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, 6.3 hours before the alert went out and 224 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: 136 J/kg
Mixed-layer CIN: -156 J/kg
Mixed-layer LCL: 2943 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 65 m²/s²
0-3 km storm-relative helicity: 124 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

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 4, 9:06 PM MDT, 3 hours 10 minutes earlier.

Area forecast discussion, Aug 4, 9:06 PM MDT, 3 hours 10 minutes before

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Hazardous weather outlook, Aug 4, 4:13 AM MDT, 20 hours 3 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE POCATELLO ID
413 AM MDT THU AUG 4 2011

IDZ017>025-031-032-051200-
EASTERN MAGIC VALLEY-SAWTOOTH MOUNTAINS-UPPER SNAKE HIGHLANDS-
UPPER SNAKE RIVER PLAIN-LOWER SNAKE RIVER PLAIN-
SOUTH CENTRAL HIGHLANDS-CARIBOU HIGHLANDS-
CACHE VALLEY/IDAHO PORTION-WASATCH MOUNTAINS/IDAHO PORTION-
BIG AND LITTLE WOOD RIVER REGION-LOST RIVER/PAHSIMEROI-
413 AM MDT THU AUG 4 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN IDAHO.

.DAY ONE...TODAY AND TONIGHT

SHOWERS AND THUNDERSTORMS WILL DEVELOP BY THIS AFTERNOON OVER ALL
OF CENTRAL AND EASTERN IDAHO. STRONG WIND...AND POSSIBLY DAMAGING
WIND...WILL DEVELOP WITH THESE STORMS. HAIL AND HEAVY DOWNPOURS
WILL ALSO ACCOMPANY THESE THUNDERSTORM CELLS. THE FREQUENT
DANGEROUS LIGHTNING...HAIL...AND STRONG WIND WILL CONTINUE INTO
FRIDAY MORNING WITH CLEARING DEVELOPING LATE AND MOVING FROM WEST
TO EAST ACROSS CENTRAL AND EASTERN IDAHO.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. THERE IS
A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS MAINLY OVER THE
HIGHLANDS AND CENTRAL IDAHO MOUNTAINS ALONG THE IDAHO-MONTANA
BORDER FOR THE BULK OF THIS PERIOD. EXPECT NEAR NORMAL SEASONAL
TEMPERATURES.

.SPOTTER INFORMATION STATEMENT...

WE ASK TRAINED SPOTTERS AND CITIZENS TO REPORT SIGNIFICANT
WEATHER CONDITIONS WHEN IT IS SAFE TO DO SO. THESE CONDITIONS MAY
INCLUDE HAIL...TORNADOES...STRONG WIND...DUST STORMS...SNOWFALL...
EXTREME COLD TEMPERATURES...FREEZING RAIN OR HEAVY RAIN...DENSE
FOG...AND FLOODING OR ICE JAMS. INFORMATION ABOUT THESE HAZARDOUS
CONDITIONS SHOULD BE CALLED INTO YOUR NATIONAL WEATHER SERVICE
OFFICE IN POCATELLO USING THE 1-800 SEVERE WEATHER HOTLINE...OR
208-233-0834.

MESSICK

In the hours before

Local storm report, Aug 4, 7:25 PM MDT, 4 hours 51 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO
725 PM MDT THU AUG 04 2011

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

0705 PM     TSTM WND GST     11 W OSGOOD             43.55N 112.33W
08/04/2011  E53 MPH          BONNEVILLE         ID   MESONET

&&

JAH

Local storm report, Aug 4, 7:36 PM MDT, 4 hours 40 minutes before

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Special weather statement, Aug 4, 7:55 PM MDT, 4 hours 21 minutes before

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Special weather statement, Aug 4, 10:43 PM MDT, 1 hour 33 minutes before

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Special weather statement, Aug 4, 11:43 PM MDT, 33 minutes before

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Special weather statement, Aug 5, 12:16 AM MDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 4, 6:16 PM MDT	Severe Thunderstorm Warning	PIH	Bingham	44 min
Aug 4, 6:19 PM MDT	Special Weather Statement	PIH	Butte	41 min
Aug 4, 6:37 PM MDT	Special Weather Statement	PIH	Power	38 min
Aug 4, 6:42 PM MDT	Severe Thunderstorm Warning	PIH	Bingham, Bonneville, Jefferson	48 min
Aug 4, 7:05 PM MDT	Severe Thunderstorm Warning	PIH	Power	28 min
Aug 4, 7:29 PM MDT	Severe Thunderstorm Warning	PIH	Fremont, Jefferson, Madison	46 min
Aug 4, 7:55 PM MDT	Special Weather Statement	PIH	Camas	50 min
Aug 4, 11:43 PM MDT	Special Weather Statement	PIH	Bear Lake	47 min
Aug 5, 2:45 PM MDT	Special Weather Statement	PIH	Butte	45 min
Aug 5, 4:26 PM MDT	Special Weather Statement	PIH	Franklin	49 min
Aug 5, 5:50 PM MDT	Special Weather Statement	PIH	Fremont	40 min

Nearby

Special Weather Statements in Idaho, 2011 Every special weather statement in 2011

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.