Alert archive / Idaho / Severe Thunderstorm Warnings in 2020
Severe Thunderstorm Warning 28, NWS Pocatello, ID
NWS Pocatello, ID issued this severe thunderstorm warning at Jun 27, 2020, 7:46 PM MDT for Cassia County, Oneida County, Idaho. It was in force for 44 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
- Jun 27, 2020, 7:46 PM MDT (01:46 UTC)
- Expired
- Jun 27, 2020, 8:30 PM MDT
- In force
- 44 min
- Issued by
- NWS Pocatello, ID
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Cassia County, ID, Oneida County, ID
The radar
The Pocatello radar (KSFX), 101 km from the middle of the area, began a volume at 01:47 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
Salt Lake City I, UT (KSLC), launched 00:00Z, 1.8 hours before the alert went out and 189 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
- 19 J/kg
- Mixed-layer CIN
- -139 J/kg
- Mixed-layer LCL
- 3901 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 16 m²/s²
- 0-3 km storm-relative helicity
- 137 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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.
In the hours before
Special weather statement, Jun 27, 6:02 PM MDT, 1 hour 44 minutes before
Special Weather Statement National Weather Service Pocatello ID 602 PM MDT Sat Jun 27 2020 IDZ062-063-280045- Caribou Range ID-Blackfoot Mountains ID- 602 PM MDT Sat Jun 27 2020 ...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN CARIBOU AND SOUTHEASTERN BONNEVILLE COUNTIES UNTIL 645 PM MDT... At 601 PM MDT, Doppler radar was tracking a strong thunderstorm 7 miles north of Wayan, moving northeast at 45 mph. Nickel size hail and winds in excess of 40 mph will be possible with this storm. Locations impacted include... Palisades Reservoir and eastern Grays Lake. PRECAUTIONARY/PREPAREDNESS ACTIONS... Torrential rainfall is also occurring with this storm, and may lead to localized flooding. Do not drive your vehicle through flooded roadways. Frequent cloud to ground lightning is occurring with this storm. Lightning can strike 10 miles away from a thunderstorm. Seek a safe shelter inside a building or vehicle. && LAT...LON 4302 11140 4313 11150 4334 11105 4308 11104 TIME...MOT...LOC 0001Z 240DEG 37KT 4309 11135 McKaughan
Special weather statement, Jun 27, 7:40 PM MDT, 6 minutes before
Special Weather Statement National Weather Service Pocatello ID 740 PM MDT Sat Jun 27 2020 IDZ056-057-059-280230- Franklin/Eastern Oneida Region ID-Raft River Region ID- Southern Hills/Albion Mountains ID- 740 PM MDT Sat Jun 27 2020 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN ONEIDA AND SOUTHEASTERN CASSIA COUNTIES UNTIL 830 PM MDT... At 739 PM MDT, Doppler radar was tracking a strong thunderstorm 12 miles north of Park Valley, or 22 miles south of Malta, moving east at 45 mph. Half inch hail and wind gusts up to 55 mph will be possible with this storm. Locations impacted include... Juniper, Stone, Sweetzer Summit and Bridge. PRECAUTIONARY/PREPAREDNESS ACTIONS... Frequent cloud to ground lightning is occurring with this storm. Lightning can strike 10 miles away from a thunderstorm. Seek a safe shelter inside a building or vehicle. This storm may intensify, so be certain to monitor local radio stations and available television stations for additional information and possible warnings from the National Weather Service. && LAT...LON 4207 11356 4231 11279 4200 11260 4199 11353 TIME...MOT...LOC 0139Z 256DEG 40KT 4199 11342 McKaughan
Local storm report, Jun 27, 7:46 PM MDT, 0 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO ID
746 PM MDT SAT JUN 27 2020
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0744 PM HAIL 11 SSW BRIDGE 42.00N 113.44W
06/27/2020 E1.00 INCH CASSIA ID TRAINED SPOTTER
&&
JAHThe office that day
Everything else NWS Pocatello, ID issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 27, 6:02 PM MDT | Special Weather Statement | PIH | Bonneville | 43 min |
| Jun 27, 6:31 PM MDT | Severe Thunderstorm Warning | PIH | Cassia | 29 min |
| Jun 27, 7:40 PM MDT | Special Weather Statement | PIH | Oneida | 50 min |
| Jun 27, 10:10 PM MDT | Severe Thunderstorm Warning | PIH | Bear Lake, Franklin, Oneida | 31 min |
| Jun 27, 11:57 PM MDT | Special Weather Statement | PIH | Madison | 63 min |
| Jun 28, 4:53 AM MDT | Special Weather Statement | PIH | Power | 37 min |
| Jun 28, 5:18 AM MDT | Special Weather Statement | PIH | Oneida | 57 min |
| Jun 28, 5:34 AM MDT | Special Weather Statement | PIH | Bannock | 41 min |
| Jun 28, 3:57 PM MDT | Special Weather Statement | PIH | Bear Lake | 48 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.