Alert archive / Idaho / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 21, NWS Missoula, MT

August 8, 2008Idaho County, Idaho

NWS Missoula, MT issued this severe thunderstorm warning at Aug 8, 2008, 4:08 PM PDT for Idaho County, Idaho. It was in force for 55 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 8, 2008, 4:08 PM PDT (23:08 UTC)
Expired
Aug 8, 2008, 5:03 PM PDT
In force
55 min
Issued by
NWS Missoula, MT
Area
Storm-based polygon

County Idaho County, ID

The radar

The Spokane radar (KOTX), 199 km from the middle of the area, began a volume at 23:10 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, 11.1 hours before the alert went out and 172 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 2008-08-08Temperature 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 2008-08-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 56 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
2448 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
56 m²/s²
0-3 km storm-relative helicity
107 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.

000 
WUUS55 KMSO 082309
SVRMSO
IDC049-090015-
/O.NEW.KMSO.SV.W.0021.080808T2308Z-080809T0015Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MISSOULA MT
408 PM PDT FRI AUG 8 2008

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WESTERN IDAHO COUNTY IN CENTRAL IDAHO...

* UNTIL 515 PM PDT/615 PM MDT/.

* AT 404 PM PDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
  CAPABLE OF PRODUCING NICKEL SIZE HAIL...AND DAMAGING WINDS IN
  EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 20 MILES WEST OF         
  KOOSKIA OVER COTTONWOOD...OR ABOUT 15 MILES NORTHWEST OF           
  GRANGEVILLE...AND WAS   MOVING NORTHEAST AT 19 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  EAST KAMIAH AND KOOSKIA AROUND 505 PM PDT.

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS AND HAIL...ALONG WITH
FREQUENT LIGHTNING AND HEAVY RAIN. FOR YOUR PROTECTION...GO INDOORS
AND STAY AWAY FROM WINDOWS. IF YOU ARE CAUGHT OUTSIDE...MOVE TO A
WELL PROTECTED AREA.

LAT...LON 4611 11651 4615 11648 4619 11637 4616 11619
      4621 11614 4622 11604 4622 11603 4628 11613
      4632 11606 4609 11590 4592 11645 4603 11652
TIME...MOT...LOC 2308Z 242DEG 16KT 4606 11635

$$
HENRY
2 follow-up statements
000 
WWUS55 KMSO 082337
SVSMSO

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MISSOULA MT
537 PM MDT FRI AUG 8 2008

IDC049-090015-
/O.CON.KMSO.SV.W.0021.000000T0000Z-080809T0015Z/
IDAHO ID-
437 PM PDT FRI AUG 8 2008

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM PDT
FOR WESTERN IDAHO COUNTY...

* AT 434 PM PDT...DOPPLER RADAR CONTINUED TO INDICATE A SEVERE
  THUNDERSTORM CAPABLE OF PRODUCING PENNEY SIZE HAIL...AND DAMAGING
  WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR WINONA...OR
  ABOUT 11 MILES SOUTHWEST OF KAMIAH...AND WAS MOVING NORTHEAST AT 18
  MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  WINONA AROUND 450 PM PDT...
  STITES AROUND 505 PM PDT...
  EAST KAMIAH...KOOSKIA AND WOODLAND AROUND 510 PM PDT.

LAT...LON 4618 11629 4616 11619 4621 11614 4621 11606
      4622 11603 4628 11613 4632 11606 4609 11590
      4604 11616 4607 11627 4616 11632
TIME...MOT...LOC 2337Z 242DEG 16KT 4612 11619

$$
000 
WWUS55 KMSO 090003
SVSMSO

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MISSOULA MT
602 PM MDT FRI AUG 8 2008

IDC049-090012-
/O.CAN.KMSO.SV.W.0021.000000T0000Z-080809T0015Z/
IDAHO ID-
502 PM PDT FRI AUG 8 2008

...THE SEVERE THUNDERSTORM WARNING FOR WESTERN IDAHO COUNTY IS
CANCELLED...

THE STORM HAS WEAKENED AND HAS EXITED THE AREA.

LAT...LON 4618 11629 4616 11619 4621 11614 4621 11606
      4622 11603 4628 11613 4632 11606 4609 11590
      4604 11616 4607 11627 4616 11632
TIME...MOT...LOC 0002Z 242DEG 16KT 4304 5653

$$
HENRY

The office that day

Everything else NWS Missoula, MT issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 8, 3:46 AM PDTFlash Flood WatchMSOLemhi16 hr
Aug 8, 4:15 PM PDTAreal Flood AdvisoryMSOLemhi94 min

Nearby

Severe Thunderstorm Warnings in Idaho, 2008Every severe thunderstorm warning in 2008

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.