Alert archive / Idaho / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 33, NWS Boise, ID

August 14, 2014Boise County, Valley County, Idaho

NWS Boise, ID issued this severe thunderstorm warning at Aug 14, 2014, 7:56 AM MDT for Boise County, Valley County, Idaho. It was in force for 49 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Aug 14, 2014, 7:56 AM MDT (13:56 UTC)
Expired: Aug 14, 2014, 8:45 AM MDT
In force: 49 min
Issued by: NWS Boise, ID
Area: Storm-based polygon

Counties Boise County, ID, Valley County, ID

The radar

The Boise radar (KCBX), 109 km from the middle of the area, began a volume at 13:59 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

Spokane, WA (KOTX), launched 12:00Z, 1.9 hours before the alert went out and 374 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: 9 J/kg
Mixed-layer CIN: -156 J/kg
Mixed-layer LCL: 1085 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: 50 m²/s²
0-3 km storm-relative helicity: 57 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Boise, ID wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 14, 3:25 AM MDT, 4 hours 31 minutes earlier.

Area forecast discussion, Aug 14, 3:25 AM MDT, 4 hours 31 minutes before

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In the hours before

Special weather statement, Aug 14, 2:30 AM MDT, 5 hours 26 minutes before

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Special weather statement, Aug 14, 2:59 AM MDT, 4 hours 57 minutes before

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Special weather statement, Aug 14, 3:27 AM MDT, 4 hours 29 minutes before

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Special weather statement, Aug 14, 4:11 AM MDT, 3 hours 45 minutes before

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Special weather statement, Aug 14, 4:52 AM MDT, 3 hours 4 minutes before

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Special weather statement, Aug 14, 7:11 AM MDT, 45 minutes before

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      <p id="message1">
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        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 13, 8:08 PM MDT	Flash Flood Warning	BOI	Gem, Payette, Washington	3 hr
Aug 14, 12:12 AM MDT	Special Weather Statement	BOI	Payette	48 min
Aug 14, 12:21 AM MDT	Special Weather Statement	BOI	Gem	39 min
Aug 14, 12:26 AM MDT	Special Weather Statement	BOI	Payette	34 min
Aug 14, 12:38 AM MDT	Special Weather Statement	BOI	Ada	37 min
Aug 14, 1:05 AM MDT	Special Weather Statement	BOI	Canyon	25 min
Aug 14, 1:25 AM MDT	Special Weather Statement	BOI		35 min
Aug 14, 1:30 AM MDT	Special Weather Statement	BOI	Gem	30 min
Aug 14, 1:52 AM MDT	Special Weather Statement	BOI	Boise	38 min
Aug 14, 1:55 AM MDT	Special Weather Statement	BOI		35 min
Aug 14, 2:30 AM MDT	Special Weather Statement	BOI	Boise	30 min
Aug 14, 4:11 AM MDT	Special Weather Statement	BOI	Gem	34 min
Aug 14, 4:52 AM MDT	Special Weather Statement	BOI	Gem	23 min
Aug 14, 7:11 AM MDT	Special Weather Statement	BOI	Gem	34 min
Aug 14, 2:26 AM MDT	Special Weather Statement	BOI	Baker	34 min
Aug 14, 2:59 AM MDT	Special Weather Statement	BOI	Baker	31 min
Aug 14, 3:27 AM MDT	Special Weather Statement	BOI	Baker	33 min
Aug 14, 3:13 PM MDT	Special Weather Statement	BOI	Baker	62 min
Aug 14, 4:04 PM MDT	Special Weather Statement	BOI	Baker	41 min

Nearby

Severe Thunderstorm Warnings in Idaho, 2014 Every severe thunderstorm warning 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.