Alert archive / Idaho / Severe Thunderstorm Warnings in 2022

Severe Thunderstorm Warning 21, NWS Spokane, WA

August 11, 2022Pend Oreille County, Washington; Bonner County, Boundary County, Idaho

NWS Spokane, WA issued this severe thunderstorm warning at Aug 11, 2022, 4:25 AM PDT for Pend Oreille County, Washington; Bonner County, Boundary County, Idaho. It was in force for 65 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: Aug 11, 2022, 4:25 AM PDT (11:25 UTC)
Expired: Aug 11, 2022, 5:30 AM PDT
In force: 65 min
Issued by: NWS Spokane, WA
Area: Storm-based polygon
Hail: 1.5 in
Wind: 60.0 mph

Counties Bonner County, ID, Boundary County, ID, Pend Oreille County, WA

The radar

The Spokane radar (KOTX), 143 km from the middle of the area, began a volume at 11:27 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

Spokane, WA (KOTX), launched 00:00Z, 11.4 hours before the alert went out and 138 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 326 J/kg
Mixed-layer CIN: -15 J/kg
Mixed-layer LCL: 2518 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 1 m²/s²
0-3 km storm-relative helicity: -9 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

481 
WUUS56 KOTX 111125
SVROTX
IDC017-021-WAC051-111230-
/O.NEW.KOTX.SV.W.0021.220811T1125Z-220811T1230Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Spokane WA
425 AM PDT Thu Aug 11 2022

The National Weather Service in Spokane has issued a

* Severe Thunderstorm Warning for...
  Northwestern Boundary County in the Panhandle of Idaho...
  Northwestern Bonner County in the Panhandle of Idaho...
  Northeastern Pend Oreille County in northeastern Washington...

* Until 530 AM PDT.

* At 424 AM PDT, a severe thunderstorm was located 14 miles northwest
  of Nordman, or 38 miles west of Bonners Ferry, moving northeast at
  25 mph.

  HAZARD...Ping pong ball size hail and 60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect hail damage to roofs, siding, windows, and 
           vehicles. Expect wind damage to roofs, siding, and trees.

* This severe thunderstorm will remain over mainly rural areas of
  northwestern Boundary, northwestern Bonner and northeastern Pend
  Oreille Counties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4890 11670 4873 11717 4879 11725 4900 11707
      4900 11685
TIME...MOT...LOC 1124Z 224DEG 21KT 4880 11714 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.50 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

DB

2 follow-up statements

428 
WWUS56 KOTX 111201
SVSOTX

Severe Weather Statement
National Weather Service Spokane WA
501 AM PDT Thu Aug 11 2022

IDC017-WAC051-111210-
/O.CAN.KOTX.SV.W.0021.000000T0000Z-220811T1230Z/
Bonner ID-Pend Oreille WA-
501 AM PDT Thu Aug 11 2022

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN BONNER AND
NORTHEASTERN PEND OREILLE COUNTIES IS CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

LAT...LON 4890 11670 4885 11689 4890 11700 4900 11694
      4900 11685
TIME...MOT...LOC 1200Z 227DEG 21KT 4893 11689 

$$

IDC021-111230-
/O.CON.KOTX.SV.W.0021.000000T0000Z-220811T1230Z/
Boundary ID-
501 AM PDT Thu Aug 11 2022

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 AM PDT
FOR NORTHWESTERN BOUNDARY COUNTY...

At 500 AM PDT, a severe thunderstorm was located 20 miles north of
Nordman, or 30 miles northwest of Bonners Ferry, moving northeast at
25 mph.

HAZARD...Ping pong ball size hail and 60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...People and animals outdoors will be injured. Expect hail 
         damage to roofs, siding, windows, and vehicles. Expect wind 
         damage to roofs, siding, and trees.

This severe thunderstorm will remain over mainly rural areas of
northwestern Boundary County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4890 11670 4885 11689 4890 11700 4900 11694
      4900 11685
TIME...MOT...LOC 1200Z 227DEG 21KT 4893 11689 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.50 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

DB

272 
WWUS56 KOTX 111221
SVSOTX

Severe Weather Statement
National Weather Service Spokane WA
521 AM PDT Thu Aug 11 2022

IDC021-111231-
/O.EXP.KOTX.SV.W.0021.000000T0000Z-220811T1230Z/
Boundary ID-
521 AM PDT Thu Aug 11 2022

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN BOUNDARY COUNTY
WILL EXPIRE AT 530 AM PDT...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.

LAT...LON 4890 11670 4885 11689 4890 11700 4900 11694
      4900 11685
TIME...MOT...LOC 1221Z 224DEG 21KT 4901 11678 

$$

DB

The office that day

Everything else NWS Spokane, WA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 10, 7:15 PM PDT	Special Weather Statement	OTX	Ferry	30 min
Aug 10, 8:44 PM PDT	Special Weather Statement	OTX	Garfield	31 min
Aug 10, 9:15 PM PDT	Special Weather Statement	OTX	Garfield	30 min
Aug 10, 10:03 PM PDT	Special Weather Statement	OTX	Garfield	27 min
Aug 10, 11:28 PM PDT	Special Weather Statement	OTX	Garfield	47 min
Aug 11, 4:08 AM PDT	Special Weather Statement	OTX	Pend Oreille	37 min
Aug 11, 1:22 PM PDT	Special Weather Statement	OTX	Asotin	53 min
Aug 11, 2:47 PM PDT	Areal Flood Advisory	OTX	Asotin	3 hr
Aug 11, 3:04 PM PDT	Special Weather Statement	OTX	Garfield	26 min
Aug 11, 3:54 PM PDT	Severe Thunderstorm Warning	OTX	Whitman	40 min
Aug 11, 4:34 PM PDT	Severe Thunderstorm Warning	OTX	Spokane, Whitman	41 min
Aug 11, 2:18 PM PDT	Special Weather Statement	OTX	Nez Perce	27 min
Aug 11, 2:35 PM PDT	Special Weather Statement	OTX	Lewis	25 min
Aug 11, 2:56 PM PDT	Severe Thunderstorm Warning	OTX	Lewis, Nez Perce	49 min
Aug 11, 3:00 PM PDT	Severe Thunderstorm Warning	OTX	Lewis, Nez Perce	45 min
Aug 11, 3:49 PM PDT	Severe Thunderstorm Warning Considerable damage threat	OTX	Lewis	41 min
Aug 11, 4:37 PM PDT	Special Weather Statement	OTX	Benewah	38 min
Aug 11, 4:42 PM PDT	Special Weather Statement	OTX	Lewis	33 min

Nearby

Severe Thunderstorm Warnings in Idaho, 2022 Severe Thunderstorm Warnings in Washington, 2022 Every severe thunderstorm warning in 2022

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.