Alert archive / Idaho / Winter Storm Warnings in 2018

Winter Storm Warning 6, NWS Pocatello, ID

November 22, 201812 counties in Idaho

NWS Pocatello, ID issued this winter storm warning at Nov 22, 2018, 1:01 PM MST for 12 counties in Idaho. It took effect at Nov 22, 2018, 6:00 PM MST. It was in force for 42 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Nov 22, 2018, 1:01 PM MST (20:01 UTC)
In effect from: Nov 22, 2018, 6:00 PM MST
Expired: Nov 24, 2018, 12:00 PM MST
In force: 42 hr
Issued by: NWS Pocatello, ID

Counties Bear Lake County, ID, Bingham County, ID, Blaine County, ID, Bonneville County, ID, Butte County, ID, Caribou County, ID, Clark County, ID, Custer County, ID, Franklin County, ID, Fremont County, ID, Madison County, ID, Teton County, ID

The radar

The Pocatello radar (KSFX), 52 km from the middle of the area, began a volume at 20:00 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

Riverton, WY (KRIW), launched 12:00Z, 8.0 hours before the alert went out and 313 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: 2320 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 141 m²/s²
0-3 km storm-relative helicity: 179 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 winter storm warning 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 winter storm warning went out at Nov 22, 9:04 AM MST, 3 hours 57 minutes earlier.

Area forecast discussion, Nov 22, 9:04 AM MST, 3 hours 57 minutes before

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In the hours before

Special weather statement, Nov 22, 8:02 AM MST, 4 hours 59 minutes before

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Local storm report, Nov 22, 10:38 AM MST, 2 hours 23 minutes before

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Local storm report, Nov 22, 10:41 AM MST, 2 hours 20 minutes before

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Local storm report, Nov 22, 10:44 AM MST, 2 hours 17 minutes before

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Local storm report, Nov 22, 11:29 AM MST, 1 hour 32 minutes before

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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 Pocatello, ID issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Nov 22, 8:02 AM MST	Special Weather Statement	PIH	Bingham, Bonneville, Butte, Clark, Fremont, Jefferson and 2 more	3 hr
Nov 22, 1:01 PM MST	Winter Weather Advisory	PIH	Bannock, Bear Lake, Bingham, Blaine, Bonneville, Butte and 11 more	41 hr

Nearby

Winter Storm Warnings in Idaho, 2018 Every winter storm warning in 2018

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.