Alert archive / Idaho / Winter Weather Advisories in 2019
Winter Weather Advisory 21, NWS Pocatello, ID
NWS Pocatello, ID issued this winter weather advisory at Oct 28, 2019, 1:56 PM MDT for 15 counties in Idaho. It took effect at Oct 28, 2019, 6:00 PM MDT. It was in force for 19 hr.
The area
The counties it named.
The facts
- Issued
- Oct 28, 2019, 1:56 PM MDT (19:56 UTC)
- In effect from
- Oct 28, 2019, 6:00 PM MDT
- Expired
- Oct 29, 2019, 1:23 PM MDT
- In force
- 19 hr
- Issued by
- NWS Pocatello, ID
Counties Bannock County, ID, Bear Lake County, ID, Bingham County, ID, Blaine County, ID, Bonneville County, ID, Caribou County, ID, Cassia County, ID, Franklin County, ID, Fremont County, ID, Jefferson County, ID, Madison County, ID, Minidoka County, ID, Oneida County, ID, Power County, ID, Teton County, ID
The radar
The Pocatello radar (KSFX), 34 km from the middle of the area, began a volume at 19:57 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, 7.9 hours before the alert went out and 315 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
- 1334 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 20 m²/s²
- 0-3 km storm-relative helicity
- 41 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this winter weather advisory 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 weather advisory went out at Oct 28, 2:13 AM MDT, 11 hours 43 minutes earlier.
Area forecast discussion, Oct 28, 2:13 AM MDT, 11 hours 43 minutes before
Area Forecast Discussion National Weather Service Pocatello ID 213 AM MDT Mon Oct 28 2019 .SHORT TERM...Today through Wednesday. An arctic cold front will slide south through Idaho this afternoon through tonight. It will have light snow with it with some accumulations possible this afternoon through Tuesday of 2 to 4 inches in the eastern highlands with possible an inch or so in the Snake River Plain. Breezy southwest winds are expected today ahead of the front in the Snake Plain and southern highlands with 20 to 25 mph winds expected. Winds will turn to the north behind the arctic front tonight and many areas could see the northerly winds in the 15 to 20 mph range overnight tonight. Very cold wind chills will be present in the Upper Snake Highlands. Do not think amounts of snow widespread enough to warrant a winter weather advisory but do expect some difficult travel conditions from late this afternoon through Tuesday morning. Beginning near the Montana border this afternoon and spreading quickly south overnight tonight. Extremely cold temperatures will continue through the entire short term period with Tuesday the coldest day with high temperatures 25 to 30 degrees below normal. Many areas will drop to zero or even below zero Wednesday morning. GK .LONG TERM...Thursday through next Monday. Expect dry conditions with a warming trend in the long term period with temperatures getting near seasonal normals by Sunday and Monday. GK && .AVIATION...Expect light winds with some high clouds drifting through the region this morning. Ceilings will begin to lower this afternoon, although remaining vfr. Winds will increase this afternoon with gusts to 25kts possible for some. Conditions will gradually deteriorate tonight with snow showers moving through the region. IFR or MVFR conditions possible near snow showers. Valle && .PIH WATCHES/WARNINGS/ADVISORIES... None. &&
The office that day
Everything else NWS Pocatello, ID issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 28, 2:28 PM MDT | Wind Chill Warning | PIH | Butte, Clark, Fremont, Teton | 21 hr |
Nearby
Winter Weather Advisories in Idaho, 2019Every winter weather advisory in 2019
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.