Alert archive / Idaho / Severe Thunderstorm Warnings in 2020
Severe Thunderstorm Warning 28, NWS Boise, ID
NWS Boise, ID issued this severe thunderstorm warning at Jul 23, 2020, 5:37 PM MDT for 4 counties in Idaho. It was in force for 23 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
- Jul 23, 2020, 5:37 PM MDT (23:37 UTC)
- Expired
- Jul 23, 2020, 6:00 PM MDT
- In force
- 23 min
- Issued by
- NWS Boise, ID
- Area
- Storm-based polygon
- Hail
- 0.88 in
- Wind
- 60.0 mph
Counties Ada County, ID, Canyon County, ID, Elmore County, ID, Owyhee County, ID
The radar
The Boise radar (KCBX), 27 km from the middle of the area, began a volume at 23:41 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
Boise Airport, ID (KBOI), launched 12:00Z, 11.6 hours before the alert went out and 36 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
- 199 J/kg
- Mixed-layer CIN
- -208 J/kg
- Mixed-layer LCL
- 2069 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- 37 m²/s²
- 0-3 km storm-relative helicity
- 49 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The office that day
Everything else NWS Boise, ID issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 22, 6:49 PM MDT | Special Weather Statement | BOI | 41 min | |
| Jul 22, 8:10 PM MDT | Special Weather Statement | BOI | 35 min | |
| Jul 22, 8:46 PM MDT | Special Weather Statement | BOI | Payette | 29 min |
| Jul 22, 8:57 PM MDT | Special Weather Statement | BOI | Payette | 33 min |
| Jul 23, 3:46 PM MDT | Special Weather Statement | BOI | Owyhee | 59 min |
| Jul 23, 3:56 PM MDT | Severe Thunderstorm Warning | BOI | Elmore, Owyhee | 32 min |
| Jul 23, 4:08 PM MDT | Severe Thunderstorm Warning | BOI | Owyhee | 37 min |
| Jul 23, 4:24 PM MDT | Severe Thunderstorm Warning | BOI | Owyhee | 51 min |
| Jul 23, 4:24 PM MDT | Severe Thunderstorm Warning | BOI | Owyhee | 36 min |
| Jul 23, 4:39 PM MDT | Severe Thunderstorm Warning | BOI | Owyhee | 51 min |
| Jul 23, 4:53 PM MDT | Special Weather Statement | BOI | Ada | 37 min |
| Jul 23, 4:58 PM MDT | Severe Thunderstorm Warning | BOI | Owyhee | 47 min |
| Jul 23, 5:08 PM MDT | Special Weather Statement | BOI | Elmore | 52 min |
| Jul 23, 5:16 PM MDT | Severe Thunderstorm Warning | BOI | Owyhee, Twin Falls | 44 min |
| Jul 23, 5:21 PM MDT | Special Weather Statement | BOI | Gooding | 39 min |
| Jul 23, 5:23 PM MDT | Special Weather Statement | BOI | Boise | 52 min |
| Jul 23, 5:25 PM MDT | Special Weather Statement | BOI | Boise | 50 min |
| Jul 23, 5:45 PM MDT | Special Weather Statement | BOI | Gooding, Twin Falls | 45 min |
| Jul 23, 5:53 PM MDT | Severe Thunderstorm Warning | BOI | Boise, Elmore | 37 min |
| Jul 22, 6:24 PM MDT | Special Weather Statement | BOI | Malheur | 36 min |
| Jul 23, 1:54 PM MDT | Special Weather Statement | BOI | Malheur | 66 min |
| Jul 23, 2:56 PM MDT | Special Weather Statement | BOI | Malheur | 49 min |
| Jul 23, 3:36 PM MDT | Special Weather Statement | BOI | Malheur | 24 min |
| Jul 23, 3:44 PM MDT | Special Weather Statement | BOI | Malheur | 31 min |
| Jul 23, 4:02 PM MDT | Special Weather Statement | BOI | Malheur | 28 min |
| Jul 23, 5:20 PM MDT | Special Weather Statement | BOI | Malheur | 40 min |
Nearby
Severe Thunderstorm Warnings in Idaho, 2020Every severe thunderstorm warning in 2020
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.