Alert archive / Idaho / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 47, NWS Spokane, WA
NWS Spokane, WA issued this severe thunderstorm warning at Jul 20, 2012, 3:37 PM PDT for Pend Oreille County, Washington; Bonner County, Boundary County, Idaho. It was in force for 53 min. 2 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 20, 2012, 3:37 PM PDT (22:37 UTC)
- Expired
- Jul 20, 2012, 4:30 PM PDT
- In force
- 53 min
- Issued by
- NWS Spokane, WA
- Area
- Storm-based polygon
Counties Bonner County, ID, Boundary County, ID, Pend Oreille County, WA
The radar
The Spokane radar (KOTX), 142 km from the middle of the area, began a volume at 22:38 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
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 20, 3:53 PM PDT | TSTM WND DMG | 5 E Nordman, ID | *** 1 FATAL *** TREE FELL ON A MOVING VEHICLE KILLING THE DRIVER. |
| Jul 20, 4:00 PM PDT | TSTM WND DMG | 16 N Coolin, ID | PRIEST LAKE SP REPORTED NUMEROUS TREES DOWN. RV AND CABIN RECEIVED EXTENSIVE DAMAGE. CARS TOTALED BY FALLING TREES. WIND ESTIMATED AT 60MPH. ANKLE DEEP OVERLAND FLOW OF WATER FROM HEAVY RAINFALL. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 20, 11:38 AM PDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Spokane, WA (KOTX), launched 12:00Z, 10.6 hours before the alert went out and 114 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
- 2619 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- -1 m²/s²
- 0-3 km storm-relative helicity
- 66 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
494 WUUS56 KOTX 202237 SVROTX IDC017-021-WAC051-202330- /O.NEW.KOTX.SV.W.0047.120720T2237Z-120720T2330Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE SPOKANE WA 337 PM PDT FRI JUL 20 2012 THE NATIONAL WEATHER SERVICE IN SPOKANE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHEASTERN PEND OREILLE COUNTY IN NORTHEAST WASHINGTON... NORTHERN BONNER COUNTY IN THE PANHANDLE OF IDAHO... THIS INCLUDES THE CITY OF SANDPOINT... BOUNDARY COUNTY IN THE PANHANDLE OF IDAHO... THIS INCLUDES THE CITY OF BONNERS FERRY... * UNTIL 430 PM PDT/530 PM MDT/ * AT 334 PM PDT...THE PUBLIC REPORTED A LINE OF SEVERE THUNDERSTORMS PRODUCING DAMAGING WINDS AROUND 60 MPH AROUND SANDPOINT. QUARTER SIZED HAIL IS ALSO POSSIBLE WITH THIS STORM. THIS LINE OF STORMS WAS LOCATED ALONG A LINE EXTENDING FROM 13 MILES WEST OF NORDMAN TO CLARK FORK...OR ALONG A LINE EXTENDING FROM 31 MILES NORTH OF NEWPORT TO 22 MILES EAST OF SANDPOINT...AND MOVING NORTH AT 35 MPH. * OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO COLBURN...NORDMAN...ELMIRA...BEAVER CREEK CAMPGROUND...NAPLES... BONNERS FERRY...MOYIE SPRINGS...COPELAND...MEADOW CREEK CAMPGROUND...COPPER CREEK CAMPGROUND...ROBINSON LAKE CAMPGROUND... PORTHILL...MEADOW CREEK AND EASTPORT PRECAUTIONARY/PREPAREDNESS ACTIONS... THIS IS A DANGEROUS STORM...SEEK SAFE SHELTER AND STAY AWAY FROM WINDOWS! A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM PDT FRIDAY EVENING/900 PM MDT FRIDAY EVENING/ FOR THE PANHANDLE AND NORTH CENTRAL IDAHO AND EASTERN WASHINGTON. && LAT...LON 4900 11604 4805 11604 4858 11738 4900 11714 TIME...MOT...LOC 2235Z 202DEG 31KT 4862 11721 4818 11611 $$ JW
2 follow-up statements
534 WWUS56 KOTX 202307 SVSOTX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE SPOKANE WA 407 PM PDT FRI JUL 20 2012 IDC017-021-WAC051-202330- /O.CON.KOTX.SV.W.0047.000000T0000Z-120720T2330Z/ BONNER ID-BOUNDARY ID-PEND OREILLE WA- 407 PM PDT FRI JUL 20 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM PDT/530 PM MDT/ FOR NORTHEASTERN PEND OREILLE...BOUNDARY AND NORTHERN BONNER COUNTIES... AT 404 PM PDT/504 PM MDT/...THE PUBLIC REPORTED A LINE OF SEVERE THUNDERSTORMS PRODUCING GUSTY WINDS OF UP TO 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 13 MILES NORTHWEST OF BEAVER CREEK CAMPGROUND TO 22 MILES SOUTHEAST OF NAPLES...OR ALONG A LINE EXTENDING FROM 36 MILES WEST OF BONNERS FERRY TO 19 MILES WEST OF LIBBY...MOVING NORTH AT 35 MPH. OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO MOYIE SPRINGS...COPELAND...MEADOW CREEK CAMPGROUND...COPPER CREEK CAMPGROUND...ROBINSON LAKE CAMPGROUND...PORTHILL...MEADOW CREEK AND EASTPORT. PRECAUTIONARY/PREPAREDNESS ACTIONS... A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM PDT FRIDAY EVENING/900 PM MDT FRIDAY EVENING/ FOR CENTRAL IDAHO AND NORTHEASTERN WASHINGTON. && LAT...LON 4900 11604 4843 11609 4858 11738 4900 11714 TIME...MOT...LOC 2306Z 202DEG 31KT 4887 11706 4843 11596 $$ JW
853 WWUS56 KOTX 202330 SVSOTX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE SPOKANE WA 430 PM PDT FRI JUL 20 2012 IDC017-021-WAC051-202339- /O.EXP.KOTX.SV.W.0047.000000T0000Z-120720T2330Z/ BONNER ID-BOUNDARY ID-PEND OREILLE WA- 430 PM PDT FRI JUL 20 2012 ...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN PEND OREILLE... BOUNDARY AND NORTHERN BONNER COUNTIES WILL EXPIRE AT 430 PM PDT/530 PM MDT/... THE GUSTY WINDS ASSOCIATED WITH A LINE OF THUNDERSTORMS HAVE SUBSIDED. THUS THE SEVERE THUNDERSTORM WARNING HAS EXPIRED. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM PDT FRIDAY EVENING/900 PM MDT FRIDAY EVENING/ FOR CENTRAL IDAHO AND NORTHEASTERN WASHINGTON. LAT...LON 4900 11604 4843 11609 4858 11738 4900 11714 TIME...MOT...LOC 2329Z 202DEG 31KT 4905 11695 4861 11585 $$ JW
The office that day
Everything else NWS Spokane, WA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 20, 12:26 AM PDT | Special Weather Statement | OTX | Okanogan | 49 min |
| Jul 20, 1:09 AM PDT | Special Weather Statement | OTX | Okanogan | 51 min |
| Jul 20, 1:10 AM PDT | Areal Flood Advisory | OTX | Okanogan | 4 hr |
| Jul 20, 11:34 AM PDT | Special Weather Statement | OTX | 56 min | |
| Jul 20, 12:17 PM PDT | Flash Flood Warning | OTX | Asotin | 28 min |
| Jul 20, 12:19 PM PDT | Special Weather Statement | OTX | Asotin | 41 min |
| Jul 20, 12:39 PM PDT | Severe Thunderstorm Warning | OTX | Asotin | 51 min |
| Jul 20, 12:59 PM PDT | Severe Thunderstorm Warning | OTX | Grant | 46 min |
| Jul 20, 1:04 PM PDT | Areal Flood Advisory | OTX | Asotin | 4 hr |
| Jul 20, 1:15 PM PDT | Flash Flood Warning | OTX | Grant | 60 min |
| Jul 20, 1:15 PM PDT | Severe Thunderstorm Warning | OTX | Grant | 60 min |
| Jul 20, 1:46 PM PDT | Severe Thunderstorm Warning | OTX | Douglas, Grant | 44 min |
| Jul 20, 2:08 PM PDT | Areal Flood Advisory | OTX | Grant | 3 hr |
| Jul 20, 2:22 PM PDT | Flash Flood Warning | OTX | Okanogan | 83 min |
| Jul 20, 2:29 PM PDT | Severe Thunderstorm Warning | OTX | Garfield, Whitman | 46 min |
| Jul 20, 2:33 PM PDT | Special Weather Statement | OTX | Okanogan | 57 min |
| Jul 20, 2:34 PM PDT | Flash Flood Warning | OTX | Okanogan | 86 min |
| Jul 20, 2:47 PM PDT | Severe Thunderstorm Warning | OTX | Okanogan | 58 min |
| Jul 20, 3:17 PM PDT | Severe Thunderstorm Warning | OTX | Ferry, Grant, Lincoln, Okanogan, Spokane, Stevens | 43 min |
| Jul 20, 3:18 PM PDT | Areal Flood Advisory | OTX | Whitman | 117 min |
| Jul 20, 3:20 PM PDT | Severe Thunderstorm Warning | OTX | Lincoln, Spokane, Whitman | 40 min |
| Jul 20, 3:27 PM PDT | Severe Thunderstorm Warning | OTX | Douglas, Okanogan | 34 min |
| Jul 20, 3:35 PM PDT | Areal Flood Warning | OTX | Pend Oreille | 4 hr |
| Jul 20, 3:47 PM PDT | Flash Flood Warning | OTX | Ferry, Okanogan | 88 min |
| Jul 20, 4:22 PM PDT | Special Weather Statement | OTX | Ferry | 38 min |
| Jul 20, 4:30 PM PDT | Severe Thunderstorm Warning | OTX | Ferry, Okanogan | 30 min |
| Jul 19, 7:09 PM PDT | Special Weather Statement | OTX | Nez Perce | 51 min |
| Jul 20, 12:57 PM PDT | Severe Thunderstorm Warning | OTX | Latah, Nez Perce | 48 min |
| Jul 20, 1:18 PM PDT | Severe Thunderstorm Warning | OTX | Benewah, Latah, Nez Perce, Shoshone | 42 min |
| Jul 20, 2:00 PM PDT | Severe Thunderstorm Warning | OTX | Benewah, Latah, Shoshone | 45 min |
| Jul 20, 2:07 PM PDT | Severe Thunderstorm Warning | OTX | Latah, Nez Perce | 38 min |
| Jul 20, 2:21 PM PDT | Severe Thunderstorm Warning | OTX | Bonner, Kootenai | 39 min |
| Jul 20, 2:41 PM PDT | Severe Thunderstorm Warning | OTX | Kootenai, Shoshone | 49 min |
| Jul 20, 2:58 PM PDT | Severe Thunderstorm Warning | OTX | Shoshone | 47 min |
Nearby
Severe Thunderstorm Warnings in Idaho, 2012Severe Thunderstorm Warnings in Washington, 2012Every severe thunderstorm warning 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.