Alert archive / Idaho / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 25, NWS Boise, ID

August 12, 2014Gooding County, Jerome County, Twin Falls County, Idaho

NWS Boise, ID issued this severe thunderstorm warning at Aug 12, 2014, 5:37 PM MDT for Gooding County, Jerome County, Twin Falls County, Idaho. It was in force for 25 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Aug 12, 2014, 5:37 PM MDT (23:37 UTC)
Expired
Aug 12, 2014, 6:02 PM MDT
In force
25 min
Issued by
NWS Boise, ID
Area
Storm-based polygon

Counties Gooding County, ID, Jerome County, ID, Twin Falls County, ID

The radar

The Pocatello radar (KSFX), 162 km from the middle of the area, began a volume at 23:40 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

Boise Airport, ID (KBOI), launched 12:00Z, 11.6 hours before the alert went out and 165 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, Boise Airport, ID at 12:00Z on 2014-08-12Temperature 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, Boise Airport, ID at 12:00Z on 2014-08-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 64 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
2466 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
64 m²/s²
0-3 km storm-relative helicity
143 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Boise, ID wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 12, 2:22 PM MDT, 3 hours 15 minutes earlier.

Area forecast discussion, Aug 12, 2:22 PM MDT, 3 hours 15 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BOISE ID
222 PM MDT TUE AUG 12 2014

.SHORT TERM...TONIGHT THROUGH THURSDAY...SCATTERED SHOWERS AND
ISOLATED THUNDERSTORMS WITH GUSTY WINDS WILL CONTINUE OVER
SOUTHEASTERN OREGON AND SOUTHWESTERN IDAHO TROUGH THE EVENING. THE
MAIN FOCUS FOR THIS ACTIVITY MAY SHIFT INTO THE MAGIC VALLEY AS
THE AIR HAS BEEN RAIN COOLED A BIT OVER EASTERN OREGON AND
EXTREME WESTERN IDAHO MAKING THE AIR LESS UNSTABLE THAN IT WAS.
THUNDERSTORMS SHOULD DIMINISH IN ALL AREAS BY MIDNIGHT. TOMORROW
WILL BE ANOTHER ACTIVE WEATHER DAY AS AN 80 KT JET MAX MOVES
AROUND THE BASE OF A CLOSED UPPER LOW OVER OREGON. THE JET MAX
WILL BE RIGHT OVER THE FORECAST AREA TOMORROW AND THERE WILL STILL
BE PLENTY OF MOISTURE AND INSTABILITY IN THE AREA. SO...EXPECT
SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS AGAIN IN THE
AFTERNOON WITH THE POTENTIAL FOR VERY GUSTY WINDS AND SMALL HAIL
IN THE STRONGER STORMS. THE UPPER LOW WILL DRIFT ONLY A BIT TO THE
NORTHEAST ON THURSDAY...SO WE WILL KEEP A SLIGHT CHANCE OF SHOWERS
AND THUNDERSTORMS IN THE FORECAST BAKER COUNTY AND IN THE CENTRAL
MOUNTAINS OF IDAHO ON THURSDAY.

LONG TERM...WEDNESDAY NIGHT THROUGH MONDAY...UPPER LOW IS EXPECTED
TO TRACK TO THE NORTHEAST THROUGH OREGON AND WASHINGTON... AND THEN
MOVE INTO THE IDAHO PANHANDLE ON FRIDAY. MODELS IN BETTER AGREEMENT
WITH TIMING AND TRACK OF THIS SYSTEM THAN PREVIOUS RUNS. THE LOW
WILL BRING A CONTINUED CHANCE OF SHOWERS AND THUNDERSTORMS ACROSS
THE NORTHERN PORTIONS OF THE AREA WITH DRIER AIR WORKING INTO
SOUTHERN PORTIONS OF THE AREA. DRIER AIR WILL MOVE OVER THE AREA
NEXT WEEKEND AND EARLY NEXT WEEK WITH WEAK HIGH PRESSURE ALOFT.
TEMPERATURES WILL BE SLIGHTLY BELOW NORMAL THURSDAY THROUGH
SATURDAY...WARMING TO NEAR NORMAL SUNDAY AND MONDAY.

.AVIATION...ISOLATED SHOWERS AND THUNDERSTORMS ACROSS SE OREGON
TONIGHT. NUMEROUS SHOWERS AND SCATTERED THUNDERSTORMS ARE EXPECTED
ACROSS THE MAGIC VALLEY AND CENTRAL IDAHO WITH LOCAL MVFR
CONDITIONS. GUSTY OUTFLOW WINDS TO 40 KNOTS...HEAVY RAIN...AND SMALL
HAIL ARE POSSIBLE WITH THE STRONGER STORMS. SURFACE WINDS SOUTH 5-15
KNOTS WITH GUSTS TO 25 KNOTS. WINDS ALOFT WILL BE SOUTHERLY 15-25
KNOTS UP THROUGH 10K FEET MSL.

.BOI WATCHES/WARNINGS/ADVISORIES...
ID...RED FLAG WARNING UNTIL MIDNIGHT MDT TONIGHT IDZ400>403-420.
OR...RED FLAG WARNING UNTIL MIDNIGHT MDT /11 PM PDT/ TONIGHT
     ORZ636-637-646.

&&

WEATHER.GOV/BOISE

SHORT TERM...JB
LONG TERM....JS/DD
AVIATION.....JS

In the hours before

Local storm report, Aug 12, 4:19 PM MDT, 1 hour 18 minutes before
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Special weather statement, Aug 12, 4:42 PM MDT, 55 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BOISE ID
442 PM MDT TUE AUG 12 2014

IDZ015-030-122330-
SOUTHERN TWIN  FALLS COUNTY ID-SOUTHWEST HIGHLANDS ID-
442 PM MDT TUE AUG 12 2014

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN OWYHEE AND WEST
CENTRAL TWIN FALLS COUNTIES UNTIL 530 PM MDT...

AT 442 PM MDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 19
MILES NORTH OF JARBIDGE...MOVING NORTHEAST AT 35 MPH.

NICKEL SIZE HAIL AND WIND GUSTS UP TO 50 MPH WILL BE POSSIBLE WITH
THIS STORM.

THIS STRONG THUNDERSTORM WILL BE NEAR...
  JUNIPER BUTTE...SALLS CROSSING AND CLOVER BUTTE AROUND 500 PM MDT.
  COONSKIN BUTTE...HORSE BUTTE...JUNIPER RANCH AND BLACK BUTTE AROUND
510 PM MDT.
  ROSEWORTH AROUND 520 PM MDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

WHEN SAFE TO DO SO...PLEASE RELAY STORM REPORTS TO THE NATIONAL
WEATHER SERVICE IN BOISE IDAHO VIA LOCAL LAW ENFORCEMENT...OR NWS
BOISE FACEBOOK AND TWITTER ACCOUNTS.

&&

LAT...LON 4211 11555 4256 11535 4234 11486 4225 11498
      4202 11534
TIME...MOT...LOC 2242Z 213DEG 30KT 4216 11537

JDS
Special weather statement, Aug 12, 4:59 PM MDT, 38 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BOISE ID
459 PM MDT TUE AUG 12 2014

IDZ013-028-122345-
BOISE MOUNTAINS ID-CAMAS PRAIRIE ID-
459 PM MDT TUE AUG 12 2014

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN CAMAS COUNTY UNTIL
545 PM MDT...

AT 459 PM MDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR
FAIRFIELD...MOVING NORTH AT 10 MPH.

HALF INCH HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH
THIS STORM.

THIS STRONG THUNDERSTORM WILL BE NEAR...
  BLAINE BRIDGE AROUND 500 PM MDT.
  CANNONBALL MOUNTAIN AND SOLDIER MOUNTAIN SKI AREA AROUND 540 PM
MDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

WHEN SAFE TO DO SO...PLEASE RELAY STORM REPORTS TO THE NATIONAL
WEATHER SERVICE IN BOISE IDAHO VIA LOCAL LAW ENFORCEMENT...OR NWS
BOISE FACEBOOK AND TWITTER ACCOUNTS.

&&

LAT...LON 4345 11453 4344 11455 4340 11455 4339 11453
      4335 11453 4326 11459 4329 11486 4358 11484
      4355 11460 4349 11455 4348 11451
TIME...MOT...LOC 2259Z 191DEG 9KT 4335 11472

JDS
Local storm report, Aug 12, 5:16 PM MDT, 21 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BOISE ID
516 PM MDT TUE AUG 12 2014

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0420 PM     TSTM WND DMG     GOODING                 42.94N 114.71W
08/12/2014                   GOODING            ID   UNKNOWN

            SOCIAL MEDIA REPORTED POWER OUTAGES IN GOODING.

&&

DDECKER
Special weather statement, Aug 12, 5:28 PM MDT, 9 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BOISE ID
528 PM MDT TUE AUG 12 2014

IDZ016-030-130030-
SOUTHERN TWIN  FALLS COUNTY ID-WESTERN MAGIC VALLEY ID-
528 PM MDT TUE AUG 12 2014

...SPECIAL WEATHER STATEMENT...

AT 527 PM MDT...DOPPLER RADAR WAS TRACKING A LINE OF STRONG
THUNDERSTORM MOVING NORTHEAST ACROSS SOUTHERN TWIN FALLS COUNTY AND
INTO JEROME COUNTY.

HALF INCH HAIL AND WINDS IN EXCESS OF 30 MPH WILL BE POSSIBLE WITH
THIS STORM.

THIS STRONG THUNDERSTORM WILL BE NEAR...
  SALMON FALLS DAM AND TIMBER BUTTE AROUND 540 PM MDT.
  ROGERSON AROUND 550 PM MDT.
  TWIN FALLS...KIMBERLY...HANSEN AND EDEN AROUND 630 PM MDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

WHEN SAFE TO DO SO...PLEASE RELAY STORM REPORTS TO THE NATIONAL
WEATHER SERVICE IN BOISE IDAHO VIA LOCAL LAW ENFORCEMENT...OR NWS
BOISE FACEBOOK AND TWITTER ACCOUNTS.

&&

LAT...LON 4251 11406 4241 11407 4242 11429 4201 11429
      4200 11492 4282 11437 4281 11405 4276 11405
      4277 11394 4254 11393
TIME...MOT...LOC 2327Z 204DEG 12KT 4214 11461

JDS
Local storm report, Aug 12, 5:33 PM MDT, 4 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BOISE ID
533 PM MDT TUE AUG 12 2014

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0445 PM     HAIL             3 E FAIRFIELD           43.35N 114.73W
08/12/2014  M1.00 INCH       CAMAS              ID   PARK/FOREST SRVC

            THE FMO FROM THE FAIRFIELD RANGER STATION REPORTED
            QUARTER SIZE HAIL AND O.58 INCHES OF RAIN.

&&

DDECKER

The office that day

Everything else NWS Boise, ID issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 12, 12:41 PM MDTSpecial Weather StatementBOIAda, Canyon49 min
Aug 12, 2:30 PM MDTSpecial Weather StatementBOIElmore45 min
Aug 12, 2:35 PM MDTSpecial Weather StatementBOITwin Falls40 min
Aug 12, 3:00 PM MDTSevere Thunderstorm WarningBOIElmore45 min
Aug 12, 3:27 PM MDTSevere Thunderstorm WarningBOIElmore, Gooding48 min
Aug 12, 3:36 PM MDTSevere Thunderstorm WarningBOIGooding, Jerome, Owyhee, Twin Falls39 min
Aug 12, 4:09 PM MDTSpecial Weather StatementBOICamas51 min
Aug 12, 4:11 PM MDTSevere Thunderstorm WarningBOICamas, Gooding49 min
Aug 12, 4:42 PM MDTSpecial Weather StatementBOITwin Falls48 min
Aug 12, 4:59 PM MDTSpecial Weather StatementBOICamas46 min
Aug 12, 5:28 PM MDTSpecial Weather StatementBOIJerome, Twin Falls62 min

Nearby

Severe Thunderstorm Warnings in Idaho, 2014Every severe thunderstorm warning in 2014

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.