Alert archive / Idaho / Special Weather Statements in 2021

Special Weather Statement, NWS Spokane, WA

May 22, 2021Benewah County, Idaho

NWS Spokane, WA issued this special weather statement at May 22, 2021, 4:13 PM PDT for Benewah County, Idaho. It was in force for 17 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
May 22, 2021, 4:13 PM PDT (23:13 UTC)
Expired
May 22, 2021, 4:30 PM PDT
In force
17 min
Issued by
NWS Spokane, WA

County Benewah County, ID

The radar

The Spokane radar (KOTX), 98 km from the middle of the area, began a volume at 23:12 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 12:00Z, 11.2 hours before the alert went out and 57 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-pSkew-T log-p diagram, Spokane, WA at 12:00Z on 2021-05-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Spokane, WA at 12:00Z on 2021-05-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 49 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1833 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
49 m²/s²
0-3 km storm-relative helicity
113 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

999 
WWUS86 KOTX 222313
SPSOTX

Special Weather Statement
National Weather Service Spokane WA
413 PM PDT Sat May 22 2021
 
IDZ004-222330-
Central Panhandle Mountains ID-
413 PM PDT Sat May 22 2021

...SPECIAL WEATHER STATEMENT...

At 412 PM PDT, Doppler radar was tracking a strong thunderstorm 7
miles south of St. Maries, moving north at 10 mph.

Pea size hail and winds up to 40 mph will be possible with this 
storm.

This storm will remain over mainly rural areas of east central
Benewah County.

LAT...LON 4716 11644 4712 11659 4725 11672 4731 11649
TIME...MOT...LOC 2312Z 163DEG 11KT 4721 11654 

$$

TW

The office that day

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

IssuedProductOfficeCountiesLasted
May 22, 4:40 PM PDTSpecial Weather StatementOTXBenewah20 min

Nearby

Special Weather Statements in Idaho, 2021Every special weather statement 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.