Alert archive / Idaho / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 4, NWS Spokane, WA

June 4, 20124 counties in Idaho

NWS Spokane, WA issued this severe thunderstorm warning at Jun 4, 2012, 4:56 PM PDT for 4 counties in Idaho. It was in force for 64 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: Jun 4, 2012, 4:56 PM PDT (23:56 UTC)
Expired: Jun 4, 2012, 6:00 PM PDT
In force: 64 min
Issued by: NWS Spokane, WA
Area: Storm-based polygon

Counties Benewah County, ID, Bonner County, ID, Kootenai County, ID, Shoshone County, ID

The radar

The Spokane radar (KOTX), 75 km from the middle of the area, began a volume at 23:59 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
Jun 4, 5:10 PM PDT	HAIL 1.5	4 Sse Chatcolet, ID
Jun 4, 5:16 PM PDT	HAIL 0.75	5 W St. Maries, ID	ALSO SAW WIND GUSTS TO 30-40 MPH
Jun 4, 5:16 PM PDT	HAIL 0.88	4 Nw St. Maries, ID
Jun 4, 5:25 PM PDT	HAIL 0.88	5 Ne Chatcolet, ID

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
Jun 4, 12:46 PM PDT	Severe Thunderstorm Watch	SPC	10 hr

The nearest sounding before it

Spokane, WA (KOTX), launched 12:00Z, 11.9 hours before the alert went out and 51 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: 5 J/kg
Mixed-layer CIN: -11 J/kg
Mixed-layer LCL: 663 m above ground
0-6 km bulk shear: 61 kt
0-1 km storm-relative helicity: 101 m²/s²
0-3 km storm-relative helicity: 112 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.

552 
WUUS56 KOTX 042356
SVROTX
IDC009-017-055-079-050100-
/O.NEW.KOTX.SV.W.0004.120604T2356Z-120605T0100Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SPOKANE WA
456 PM PDT MON JUN 4 2012

THE NATIONAL WEATHER SERVICE IN SPOKANE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WESTERN BENEWAH COUNTY IN THE PANHANDLE OF IDAHO...
  THIS INCLUDES THE CITY OF ST. MARIES...
  SOUTHERN BONNER COUNTY IN THE PANHANDLE OF IDAHO...
  KOOTENAI COUNTY IN THE PANHANDLE OF IDAHO...
  THIS INCLUDES THE CITIES OF...RATHDRUM...POST FALLS...COEUR
  D'ALENE...
  NORTHWESTERN SHOSHONE COUNTY IN THE PANHANDLE OF IDAHO...

* UNTIL 600 PM PDT

* AT 450 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING HALF DOLLAR SIZE HAIL...
  AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED
  NEAR TENSED...OR 20 MILES SOUTHWEST OF ST. MARIES...AND MOVING
  NORTH AT 55 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  PLUMMER...CHATCOLET...WORLEY...ST. MARIES...HARRISON...MEDIMONT...
  ROSE LAKE...BEAUTY CREEK CAMPGROUND...WOLF CREEK CAMPGROUND...POST
  FALLS...FERNAN LAKE VILLAGE...HUETTER...FOURTH OF JULY PASS...COEUR
  D'ALENE...HAUSER...DALTON GARDENS...HAYDEN...HAYDEN LAKE...
  RATHDRUM...CHILCO...SPIRIT LAKE...ATHOL...BLANCHARD...LACLEDE...
  MAGEE RANGER STATION...BAYVIEW...GRANITE...CAREYWOOD AND JORDAN
  CREEK CAMPGROUND

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DOPPLER RADAR HAS INDICATED SOME WEAK ROTATION WITHIN THIS STORM.
WHILE NOT IMMEDIATELY LIKELY...A TORNADO MAY STILL DEVELOP. IF A
TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A
STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.

IF ON OR NEAR LAKE COEUR D ALENE...GET OUT OF THE WATER AND MOVE 
INDOORS OR INSIDE A VEHICLE. REMEMBER...LIGHTNING CAN STRIKE OUT TO 
15 MILES FROM THE PARENT THUNDERSTORM. IF YOU CAN HEAR THUNDER...YOU 
ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. MOVE TO SAFE SHELTER 
NOW. DON'T BE CAUGHT ON THE WATER IN A THUNDERSTORM!

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL MIDNIGHT PDT
TUESDAY MORNING FOR THE PANHANDLE AND NORTH CENTRAL IDAHO AND EASTERN
WASHINGTON.

&&

LAT...LON 4703 11679 4704 11683 4708 11690 4707 11695
      4709 11698 4711 11697 4713 11700 4713 11703
      4814 11703 4803 11604 4798 11604
TIME...MOT...LOC 2356Z 202DEG 49KT 4720 11684

$$

SB

2 follow-up statements

632 
WWUS56 KOTX 050024
SVSOTX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPOKANE WA
524 PM PDT MON JUN 4 2012

IDC009-017-055-079-050100-
/O.CON.KOTX.SV.W.0004.000000T0000Z-120605T0100Z/
BONNER ID-SHOSHONE ID-BENEWAH ID-KOOTENAI ID-
524 PM PDT MON JUN 4 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM PDT
FOR KOOTENAI...NORTHWESTERN BENEWAH...NORTHWESTERN SHOSHONE AND
SOUTHERN BONNER COUNTIES...

AT 512 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING HALF DOLLAR SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
LOCATED NEAR CHATCOLET...OR 9 MILES NORTHWEST OF ST. MARIES...MOVING
NORTH AT 55 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO ROSE
LAKE...BEAUTY CREEK CAMPGROUND...POST FALLS...WOLF CREEK
CAMPGROUND...FERNAN LAKE VILLAGE...HUETTER...FOURTH OF JULY PASS...
COEUR D'ALENE...HAUSER...DALTON GARDENS...HAYDEN...HAYDEN LAKE...
RATHDRUM...CHILCO...SPIRIT LAKE...BLANCHARD...ATHOL...LACLEDE...MAGEE
RANGER STATION...BAYVIEW...GRANITE...CAREYWOOD AND JORDAN CREEK
CAMPGROUND.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF ON OR NEAR LAKE COEUR D ALENE...GET OUT OF THE WATER AND MOVE 
INDOORS OR INSIDE A VEHICLE. REMEMBER...LIGHTNING CAN STRIKE OUT TO 
15 MILES FROM THE PARENT THUNDERSTORM. IF YOU CAN HEAR THUNDER...YOU 
ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. MOVE TO SAFE SHELTER 
NOW. DON'T BE CAUGHT ON THE WATER IN A THUNDERSTORM!

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL MIDNIGHT PDT
TUESDAY MORNING FOR THE PANHANDLE AND NORTH CENTRAL IDAHO AND EASTERN
WASHINGTON.

&&

LAT...LON 4722 11667 4729 11701 4814 11703 4803 11604
      4798 11604
TIME...MOT...LOC 0019Z 202DEG 49KT 4749 11666

$$

SB

224 
WWUS56 KOTX 050048
SVSOTX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPOKANE WA
548 PM PDT MON JUN 4 2012

IDC009-050057-
/O.CAN.KOTX.SV.W.0004.000000T0000Z-120605T0100Z/
BENEWAH ID-
548 PM PDT MON JUN 4 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN BENEWAH COUNTY IS
CANCELLED...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL MIDNIGHT PDT
TUESDAY MORNING FOR THE PANHANDLE AND NORTH CENTRAL IDAHO AND EASTERN
WASHINGTON.

LAT...LON 4758 11648 4762 11693 4806 11696 4803 11604
      4798 11604
TIME...MOT...LOC 0047Z 202DEG 49KT 4784 11645

$$

IDC017-055-079-050100-
/O.CON.KOTX.SV.W.0004.000000T0000Z-120605T0100Z/
BONNER ID-SHOSHONE ID-KOOTENAI ID-
548 PM PDT MON JUN 4 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM PDT
FOR NORTHERN KOOTENAI...NORTHWESTERN SHOSHONE AND SOUTHERN BONNER
COUNTIES...

AT 542 PM PDT...A SEVERE THUNDERSTORM WAS REPORTED CAPABLE OF 
PRODUCING NICKEL TO QUARTER SIZE HAIL AND VERY HEAVY RAINFALL.  THIS 
STORM WAS LOCATED 11 MILES NORTH OF FOURTH OF JULY PASS...OR 15 
MILES EAST OF COEUR D'ALENE...MOVING NORTH AT 55 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
ATHOL...LACLEDE...MAGEE RANGER STATION...BAYVIEW...GRANITE...
CAREYWOOD AND JORDAN CREEK CAMPGROUND.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL MIDNIGHT PDT
TUESDAY MORNING FOR THE PANHANDLE AND NORTH CENTRAL IDAHO AND EASTERN
WASHINGTON.

&&

LAT...LON 4758 11648 4762 11693 4806 11696 4803 11604
      4798 11604
TIME...MOT...LOC 0047Z 202DEG 49KT 4784 11645

$$

SGB

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 4, 1:34 PM PDT	Flash Flood Watch	OTX	Benewah, Bonner, Boundary, Kootenai, Latah, Lewis and 2 more	14 hr

Nearby

Severe Thunderstorm Warnings in Idaho, 2012 Every 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.