Alert archive / Idaho / Special Weather Statements in 2014

Special Weather Statement, NWS Pocatello, ID

August 20, 2014Caribou County, Idaho

NWS Pocatello, ID issued this special weather statement at Aug 20, 2014, 5:21 PM MDT for Caribou County, Idaho. It was in force for 39 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 20, 2014, 5:21 PM MDT (23:21 UTC)
Expired: Aug 20, 2014, 6:00 PM MDT
In force: 39 min
Issued by: NWS Pocatello, ID

County Caribou County, ID

The radar

The Pocatello radar (KSFX), 115 km from the middle of the area, began a volume at 23:21 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 12:00Z, 11.4 hours before the alert went out and 194 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: 68 J/kg
Mixed-layer CIN: -74 J/kg
Mixed-layer LCL: 1110 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 2 m²/s²
0-3 km storm-relative helicity: -19 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 20, 2:23 PM MDT, 2 hours 58 minutes earlier.

Area forecast discussion, Aug 20, 2:23 PM MDT, 2 hours 58 minutes before

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In the hours before

Local storm report, Aug 20, 4:06 PM MDT, 1 hour 15 minutes before

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Special weather statement, Aug 20, 4:30 PM MDT, 51 minutes before

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Local storm report, Aug 20, 4:34 PM MDT, 47 minutes before

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Local storm report, Aug 20, 5:06 PM MDT, 15 minutes before

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Local storm report, Aug 20, 5:09 PM MDT, 12 minutes before

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Special weather statement, Aug 20, 5:21 PM 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 19, 6:07 PM MDT	Special Weather Statement	PIH	Butte	53 min
Aug 19, 6:26 PM MDT	Special Weather Statement	PIH	Bonneville	49 min
Aug 19, 6:36 PM MDT	Special Weather Statement	PIH	Bingham, Jefferson	39 min
Aug 19, 6:58 PM MDT	Areal Flood Advisory	PIH	Bonneville, Jefferson, Madison	2 hr
Aug 19, 7:18 PM MDT	Special Weather Statement	PIH	Bingham, Power	57 min
Aug 19, 7:24 PM MDT	Flash Flood Warning	PIH	Bonneville	111 min
Aug 19, 7:45 PM MDT	Areal Flood Advisory	PIH	Bingham, Bonneville, Fremont, Jefferson, Madison	2 hr
Aug 20, 1:46 PM MDT	Special Weather Statement	PIH	Butte	44 min
Aug 20, 2:46 PM MDT	Special Weather Statement	PIH	Caribou	44 min
Aug 20, 2:55 PM MDT	Special Weather Statement	PIH	Clark, Jefferson	65 min
Aug 20, 3:21 PM MDT	Special Weather Statement	PIH	Power	39 min
Aug 20, 4:05 PM MDT	Special Weather Statement	PIH	Caribou	40 min
Aug 20, 4:30 PM MDT	Special Weather Statement	PIH	Caribou	45 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.