Alert archive / Idaho / Special Weather Statements in 2012

Special Weather Statement, NWS Spokane, WA

July 2, 2012Benewah County, Idaho

NWS Spokane, WA issued this special weather statement at Jul 2, 2012, 9:21 PM PDT for Benewah County, Idaho. It was in force for 39 min. 4 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Jul 2, 2012, 9:21 PM PDT (04:21 UTC)
Expired
Jul 2, 2012, 10:00 PM PDT
In force
39 min
Issued by
NWS Spokane, WA

County Benewah County, ID

The radar

The Spokane radar (KOTX), 75 km from the middle of the area, began a volume at 04:22 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.

What was reported inside it

TimeReportWhereRemark
Jul 2, 9:35 PM PDTHAIL 12 Ene Chatcolet, IDMOSTLY PEA TO DIME SIZE...BUT A FEW NICKEL TO QUARTER SIZE HAIL STONES. HAIL LASTED 4 MINUTES.
Jul 2, 9:40 PM PDTHAIL 0.755 S Harrison, IDTIME ESTIMATED. SPOUSE OF BENEWAH DISPATCH OFFICER.
Jul 2, 10:05 PM PDTHAIL 0.55 W St. Maries, IDHAIL LASTED FOR FIVE MINUTES THROUGH 2210 PDT.
Jul 2, 10:08 PM PDTHAIL 1.754 N Tensed, IDTIME ESTIMATED. REPORT RELAYED FROM DISPATCH.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Spokane, WA (KOTX), launched 00:00Z, 4.4 hours before the alert went out and 39 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 00:00Z on 2012-07-03Temperature 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°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Spokane, WA at 00:00Z on 2012-07-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 52 square meters per square second.1939587897Sfc1 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
2279 m above ground
0-6 km bulk shear
57 kt
0-1 km storm-relative helicity
52 m²/s²
0-3 km storm-relative helicity
115 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

923 
WWUS86 KOTX 030421
SPSOTX

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPOKANE WA
921 PM PDT MON JUL 2 2012

IDZ002>004-030500-
BENEWAH ID-KOOTENAI ID-
921 PM PDT MON JUL 2 2012

THE NATIONAL WEATHER SERVICE IN SPOKANE HAS ISSUED A

SIGNIFICANT WEATHER ADVISORY FOR...
  SOUTHEASTERN KOOTENAI COUNTY IN THE PANHANDLE OF IDAHO
  NORTHWESTERN BENEWAH COUNTY IN THE PANHANDLE OF IDAHO

UNTIL 1000 PM PDT

AT 921 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
STRONG THUNDERSTORM 5 MILES SOUTH OF PLUMMER. THIS STORM WAS MOVING 
NORTHEAST AT 40 MPH.

HAIL UP TO THE SIZE OF PENNIES IS EXPECTED WITH THIS STORM...ALONG 
WITH HEAVY RAIN...AND FREQUENT CLOUD TO GROUND LIGHTNING.

LOCATIONS IMPACTED INCLUDE...
   HARRISON...
   ST. MARIES...

THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

LAT...LON 4761 11663 4740 11633 4718 11690 4728 11703
TIME...MOT...LOC 0421Z 230DEG 35KT 4727 11684

$$

KOCH

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 2, 10:00 PM PDTSevere Thunderstorm WarningOTXWhitman45 min
Jul 2, 9:27 PM PDTSevere Thunderstorm WarningOTXBenewah, Kootenai, Shoshone48 min
Jul 2, 10:30 PM PDTSpecial Weather StatementOTXKootenai30 min

Nearby

Special Weather Statements in Idaho, 2012Every special weather statement in 2012

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.