Alert archive / Idaho / Snow Squall Warnings in 2018
Snow Squall Warning 1, NWS Pocatello, ID
NWS Pocatello, ID issued this snow squall warning at Dec 30, 2018, 10:26 AM MST for 4 counties in 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
- Dec 30, 2018, 10:26 AM MST (17:26 UTC)
- Expired
- Dec 30, 2018, 11:15 AM MST
- In force
- 49 min
- Issued by
- NWS Pocatello, ID
- Area
- Storm-based polygon
Counties Bingham County, ID, Butte County, ID, Clark County, ID, Jefferson County, ID
The radar
The Pocatello radar (KSFX), 74 km from the middle of the area, began a volume at 17:27 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, 5.4 hours before the alert went out and 344 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1858 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 40 m²/s²
- 0-3 km storm-relative helicity
- 14 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this snow squall 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 snow squall warning went out at Dec 29, 2:13 PM MST, 20 hours 13 minutes earlier.
Area forecast discussion, Dec 29, 2:13 PM MST, 20 hours 13 minutes before
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</html>The office that day
Everything else NWS Pocatello, ID issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 29, 5:59 PM MST | Winter Weather Advisory | PIH | Bannock, Bingham, Blaine, Cassia, Minidoka, Power | 3 hr |
| Dec 30, 11:20 AM MST | Special Weather Statement | PIH | Oneida | 40 min |
Nearby
Snow Squall Warnings in Idaho, 2018Every snow squall 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.