Alert archive / Oregon / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 13, NWS Boise, ID
NWS Boise, ID issued this severe thunderstorm warning at Sep 10, 2021, 4:53 PM PDT for Harney County, Malheur County, Oregon. It was in force for 67 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Sep 10, 2021, 4:53 PM PDT (23:53 UTC)
- Expired
- Sep 10, 2021, 6:00 PM PDT
- In force
- 67 min
- Issued by
- NWS Boise, ID
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Harney County, OR, Malheur County, OR
The radar
The Boise radar (KCBX), 124 km from the middle of the area, began a volume at 23:53 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, 11.9 hours before the alert went out and 126 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
- 3036 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- -90 m²/s²
- 0-3 km storm-relative helicity
- 125 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
084
WUUS55 KBOI 102353
SVRBOI
ORC025-045-110100-
/O.NEW.KBOI.SV.W.0013.210910T2353Z-210911T0100Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Boise ID
553 PM MDT Fri Sep 10 2021
The National Weather Service in Boise has issued a
* Severe Thunderstorm Warning for...
Northeastern Harney County in southeastern Oregon...
Northwestern Malheur County in southeastern Oregon...
* Until 700 PM MDT/600 PM PDT/..
* At 552 PM MDT/452 PM PDT/, severe thunderstorms were located along
a line extending from 6 miles northwest of Jonesboro to near Duck
Creek Butte, moving east at 30 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.
* Severe thunderstorms will be near...
Jonesboro and Monument Peak around 600 PM MDT.
Saddle Butte and Rufino Butte around 610 PM MDT.
Crowley and Monumental Rock around 620 PM MDT.
Westfall, Sacramento Butte, Turnbull Mountain and Freezeout
Mountain around 630 PM MDT.
Harper, Cedar Mountain, Iron Point and Copeland Butte around 640
PM MDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
When safe to do so, please relay storm reports to the National
Weather Service in Boise via local law enforcement, or National
Weather Service Boise Facebook and Twitter accounts.
&&
LAT...LON 4406 11738 4312 11750 4300 11839 4388 11818
TIME...MOT...LOC 2352Z 257DEG 25KT 4385 11803 4321 11814
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
SPThe office that day
Everything else NWS Boise, ID issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 10, 4:05 PM PDT | Special Weather Statement | BOI | Harney | 55 min |
Nearby
Severe Thunderstorm Warnings in Oregon, 2021Every severe thunderstorm warning in 2021
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.