Alert archive / Idaho / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 13, NWS Pocatello, ID

July 14, 2014Fremont County, Jefferson County, Idaho

NWS Pocatello, ID issued this severe thunderstorm warning at Jul 14, 2014, 4:04 PM MDT for Fremont County, Jefferson County, Idaho. It was in force for 20 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: Jul 14, 2014, 4:04 PM MDT (22:04 UTC)
Expired: Jul 14, 2014, 4:24 PM MDT
In force: 20 min
Issued by: NWS Pocatello, ID
Area: Storm-based polygon

Counties Fremont County, ID, Jefferson County, ID

The radar

The Pocatello radar (KSFX), 98 km from the middle of the area, began a volume at 22:05 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

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 14, 2:05 PM MDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Boise Airport, ID (KBOI), launched 12:00Z, 10.1 hours before the alert went out and 313 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: 1 J/kg
Mixed-layer CIN: -707 J/kg
Mixed-layer LCL: 3098 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 75 m²/s²
0-3 km storm-relative helicity: 207 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.

110 
WUUS55 KPIH 142204
SVRPIH
IDC043-051-142245-
/O.NEW.KPIH.SV.W.0013.140714T2204Z-140714T2245Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE POCATELLO ID
404 PM MDT MON JUL 14 2014

THE NATIONAL WEATHER SERVICE IN POCATELLO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EXTREME SOUTHWESTERN FREMONT COUNTY IN EASTERN IDAHO...
  NORTHERN JEFFERSON COUNTY IN SOUTHEAST IDAHO...

* UNTIL 445 PM MDT

* AT 357 PM MDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
  THUNDERSTORM PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN
  EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 22 MILES WEST OF CAMAS...
  OR 10 MILES NORTH OF INL...AND MOVING EAST AT 35 MPH.

* LOCATIONS THAT COULD BE AFFECTED INCLUDE...
   CAMAS...
   MONTEVIEW...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

STAY TUNED TO THIS BROADCAST FOR THE LATEST UPDATES AND INFORMATION.
TO REPORT SEVERE WEATHER ONLY...CALL 1 800 8 7 7 1 9 3 7.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM MDT MONDAY
EVENING FOR SOUTHEASTERN IDAHO.

&&

LAT...LON 4379 11211 4396 11270 4406 11263 4406 11247
      4402 11204
TIME...MOT...LOC 2203Z 282DEG 29KT 4399 11260

$$

HEDGES

1 follow-up statement

815 
WWUS55 KPIH 142224
SVSPIH

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE POCATELLO ID
424 PM MDT MON JUL 14 2014

IDC043-051-142234-
/O.CAN.KPIH.SV.W.0013.000000T0000Z-140714T2245Z/
JEFFERSON ID-FREMONT ID-
424 PM MDT MON JUL 14 2014

...THE SEVERE THUNDERSTORM WARNING FOR EXTREME SOUTHWESTERN FREMONT
AND NORTHERN JEFFERSON COUNTIES IS CANCELLED...

AT 424 PM MDT...WEATHER SERVICE RADAR INDICATED THAT THE 
THUNDERSTORM WHICH PROMPTED THE WARNING HAS WEAKENED. THEREFORE 
THE WARNING IS CANCELLED.

* LOCATIONS THAT COULD BE AFFECTED INCLUDE...
   CAMAS...
   HAMER...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

STAY TUNED TO THIS BROADCAST FOR THE LATEST UPDATES AND INFORMATION.
TO REPORT SEVERE WEATHER ONLY...CALL 1 800 8 7 7 1 9 3 7.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM MDT MONDAY
EVENING FOR SOUTHEASTERN IDAHO.

&&

LAT...LON 4379 11211 4396 11270 4406 11263 4406 11247
      4402 11204
TIME...MOT...LOC 2224Z 282DEG 29KT 4395 11237

$$

HEDGES

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 Pocatello, ID wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 14, 1:28 PM MDT, 2 hours 36 minutes earlier.

Area forecast discussion, Jul 14, 1:28 PM MDT, 2 hours 36 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE POCATELLO ID
128 PM MDT MON JUL 14 2014

.DISCUSSION...AN UPPER LOW PASSING THRU THE PAC NW THIS AFTN IS
PROVIDING THE INSTABILITY FOR SHOWERS AND TSTMS THIS AFTN AND EVE.
THE BEST CHANCES WILL BE OVER THE UPPER SNAKE HIGHLANDS. SOME OF
THESE TSTMS WILL PRODUCE HAIL AND STRONG GUSTY WINDS. THE MONSOON
MOISTURE PUSHES TO THE EAST BY TUE MORN...BUT THE UPPER LOW WILL
STILL PROVIDE ENOUGH INSTABILITY TO SET OFF A FEW TSTMS NEAR THE
DIVIDE TUE AFTN AND EVE. MINOR UPPER RIDGING WILL KEEP THE AREA
DRY ON WED...BUT A MINOR TROF IN THE NW FLOW ON THU WILL PROVIDE
THE NECESSARY FORCING FOR A FEW AFTN/EVE TSTMS OVER THE UPPER
SNAKE HIGHLANDS AND UPPER SNAKE RIVER PLAIN. BY SATURDAY...A PATCH
OF MONSOON MOISTURE MAKES ITS WAY UP TO THE UT/ID BORDER. THIS IS
EXPECTED TO FUEL ISOLD TSTMS SAT AFTN AND EVE OVER THE SOUTHERN
HIGHLANDS. FOR SUN THRU MON...ONLY EXPECTING ISOLD AFTN/EVE TSTMS
OVER THE SE CORNER OF ID. HEDGES

&&

.AVIATION...
.AVIATION...HAVE VICINITY THUNDERSTORMS AT ALL TAF SITES THIS
AFTERNOON AND EARLY EVENING AS UPPER LEVEL WAVE WORKS THROUGH THE
REGION.  GUSTY OUTFLOW WINDS WILL BE MAIN THREAT FROM THE STORMS AT
THE SITES.  VFR CONDITIONS WILL CONTINUE THROUGH TUESDAY.
GK

&&

.FIRE WEATHER...AN UPPER LEVEL SYSTEM IS MOVING THROUGH EASTERN
IDAHO TODAY AND EXPECT ISOLATED TO SCATTERED THUNDERSTORMS ACROSS
THE DISTRICT.   RED FLAG WARNINGS ARE IN EFFECT FOR ZONES 410...422
AND 427 UNDER SCATTERED COVERAGE AND CRITICAL FUELS.  WINDS GUSTS
OVER 50 MPH ARE POSSIBLE FROM THUNDERSTORM OUTFLOW AND WILL BE THE
MAIN THREAT FROM THE STORMS ALONG WITH EXTENSIVE CLOUD TO GROUND
LIGHTNING.  EXPECT LESS COVERAGE OF THUNDERSTORMS TUESDAY AFTERNOON
WITH MOST IN ZONES 410...411 AND 413.
GK

&&

.PIH WATCHES/WARNINGS/ADVISORIES...
RED FLAG WARNING UNTIL MIDNIGHT MDT TONIGHT IDZ410.

RED FLAG WARNING UNTIL MIDNIGHT MDT TONIGHT IDZ427.

RED FLAG WARNING UNTIL 9 PM MDT THIS EVENING IDZ422.

&&

In the hours before

Local storm report, Jul 14, 3:05 PM MDT, 59 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO ID
305 PM MDT MON JUL 14 2014

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

0304 PM     HAIL             9 WSW ALBION            42.37N 113.75W
07/14/2014  E0.25 INCH       CASSIA             ID   TRAINED SPOTTER

            PEA SIZE HAIL

0304 PM     HAIL             4 E INKOM               42.79N 112.18W
07/14/2014  E0.25 INCH       BANNOCK            ID   TRAINED SPOTTER

            PEA SIZE HAIL

&&

DPHELPS

Special weather statement, Jul 14, 3:25 PM MDT, 39 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE POCATELLO ID
325 PM MDT MON JUL 14 2014

IDZ022-142200-
ONEIDA ID-POWER ID-CASSIA ID-
325 PM MDT MON JUL 14 2014

THE NATIONAL WEATHER SERVICE IN POCATELLO HAS ISSUED A

SIGNIFICANT WEATHER ADVISORY FOR...
  EAST CENTRAL CASSIA COUNTY IN SOUTH CENTRAL IDAHO
  SOUTH CENTRAL POWER COUNTY IN SOUTHEAST IDAHO
  WESTERN ONEIDA COUNTY IN SOUTHEAST IDAHO

UNTIL 400 PM MDT

AT 318 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED TWO
STRONG THUNDERSTORMS. ONE 15 MILES NORTHWEST OF BLACK PINE..MOVING
EAST AT 20 MPH. THE OTHER STORM IS APPROACHING SWEETZER SUMMIT.
THESE STRONG STORMS ARE ABOUT TO PASS OVER I-84 JUST NORTH OF
SWEETZER SUMMIT AS WELL AS OVER SWEETZER SUMMIT. HEAVY RAIN WILL
REDUCE VISIBILITIES AND GUSTY WINDS WILL MAKE DRIVING HAZARDOUS.
PLEASE USE CAUTION.

HAIL UP TO ONE-HALF INCH IN DIAMETER AND WIND GUSTS UP TO 50 MPH ARE
EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN AND FREQUENT
DANGEROUS LIGHTNING.

LOCATIONS IMPACTED INCLUDE...
  RURAL EASTERN CASSIA COUNTY...
  RURAL WESTERN ONEIDA COUNTY...
  RURAL SOUTHERN POWER COUNTY...

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 4250 11270 4205 11266 4216 11346 4230 11350
TIME...MOT...LOC 2121Z 275DEG 17KT 4219 11315

TW!

Special weather statement, Jul 14, 3:35 PM MDT, 29 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE POCATELLO ID
335 PM MDT MON JUL 14 2014

IDZ023-142215-
BONNEVILLE ID-
335 PM MDT MON JUL 14 2014

THE NATIONAL WEATHER SERVICE IN POCATELLO HAS ISSUED A

SIGNIFICANT WEATHER ADVISORY FOR...
  EAST CENTRAL BONNEVILLE COUNTY IN SOUTHEAST IDAHO

UNTIL 415 PM MDT

AT 329 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR PALISADES..MOVING EAST AT 20 MPH.

HAIL UP TO ONE-HALF INCH IN DIAMETER AND WIND GUSTS UP TO 50 MPH ARE
EXPECTED WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
   PALISADES...

THIS STORM MAY INTENSIFY...AND A SEVERE THUNDERSTORM WATCH IS IN
EFFECT FOR THIS AREA. 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 4323 11105 4328 11139 4346 11137 4347 11103
      4329 11103 4323 11104
TIME...MOT...LOC 2135Z 276DEG 19KT 4336 11125

GK

Local storm report, Jul 14, 3:43 PM MDT, 21 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO ID
343 PM MDT MON JUL 14 2014

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

0342 PM     HAIL             GRACE                   42.58N 111.73W
07/14/2014  E0.25 INCH       CARIBOU            ID   PUBLIC

            PEA SIZE HAIL

&&

DPHELPS

Special weather statement, Jul 14, 3:45 PM MDT, 19 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE POCATELLO ID
345 PM MDT MON JUL 14 2014

IDZ023-025-142230-
BEAR LAKE ID-CARIBOU ID-BINGHAM ID-BONNEVILLE ID-BANNOCK ID-FRANKLIN
ID-
345 PM MDT MON JUL 14 2014

THE NATIONAL WEATHER SERVICE IN POCATELLO HAS ISSUED A

SIGNIFICANT WEATHER ADVISORY FOR...
  NORTHEASTERN FRANKLIN COUNTY IN SOUTHEAST IDAHO
  CENTRAL BANNOCK COUNTY IN SOUTHEAST IDAHO
  EXTREME SOUTH CENTRAL BONNEVILLE COUNTY IN SOUTHEAST IDAHO
  SOUTHEASTERN BINGHAM COUNTY IN SOUTHEAST IDAHO
  CARIBOU COUNTY IN SOUTHEAST IDAHO
  NORTHWESTERN BEAR LAKE COUNTY IN SOUTHEAST IDAHO

UNTIL 430 PM MDT

AT 337 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 7 MILES NORTHEAST OF HATCH..MOVING EAST AT 20
MPH.

HAIL UP TO ONE-HALF INCH IN DIAMETER AND WIND GUSTS UP TO 40 MPH ARE
EXPECTED WITH THIS STORM...ALONG WITH FREQUENT DANGEROUS LIGHTNING.

LOCATIONS IMPACTED INCLUDE...
   HENRY AND  CONDA...
   WAYAN...

THIS STORM MAY INTENSIFY...AND A SEVERE THUNDERSTORM WATCH IS IN
EFFECT FOR THIS AREA. 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 4301 11105 4217 11153 4282 11230 4303 11198
TIME...MOT...LOC 2144Z 276DEG 19KT 4289 11169

GK
--_@_WWA_SIGWXADV.WWAPROD--!

Local storm report, Jul 14, 4:02 PM MDT, 2 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO ID
402 PM MDT MON JUL 14 2014

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

0400 PM     HAIL             6 SSE GRACE             42.50N 111.68W
07/14/2014  E0.50 INCH       CARIBOU            ID   TRAINED SPOTTER

            MARBLE SIZE HAIL

&&

DPHELPS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 14, 3:37 AM MDT	Red Flag Warning	PIH	Bingham, Blaine, Boise, Bonneville, Butte, Cassia and 8 more	18 hr
Jul 14, 1:54 PM MDT	Severe Thunderstorm Warning	PIH	Butte, Clark, Custer	51 min
Jul 14, 2:32 PM MDT	Special Weather Statement	PIH	Cassia	43 min
Jul 14, 2:36 PM MDT	Special Weather Statement	PIH	Bonneville	39 min
Jul 14, 2:39 PM MDT	Severe Thunderstorm Warning	PIH	Butte, Clark	51 min
Jul 14, 2:40 PM MDT	Severe Thunderstorm Warning	PIH	Bannock, Bingham, Caribou	50 min
Jul 14, 3:08 PM MDT	Severe Thunderstorm Warning	PIH	Cassia	37 min
Jul 14, 3:25 PM MDT	Special Weather Statement	PIH	Cassia	35 min
Jul 14, 3:29 PM MDT	Severe Thunderstorm Warning	PIH	Butte, Clark, Jefferson	46 min
Jul 14, 3:35 PM MDT	Special Weather Statement	PIH	Bonneville	40 min
Jul 14, 3:37 PM MDT	Areal Flood Advisory	PIH	Butte, Clark, Custer	3 hr
Jul 14, 3:45 PM MDT	Special Weather Statement	PIH	Caribou	45 min
Jul 14, 4:07 PM MDT	Special Weather Statement	PIH	Bear Lake	53 min
Jul 14, 4:15 PM MDT	Special Weather Statement	PIH	Minidoka	45 min
Jul 14, 4:21 PM MDT	Severe Thunderstorm Warning	PIH	Bear Lake, Caribou, Franklin	39 min
Jul 14, 4:22 PM MDT	Special Weather Statement	PIH	Oneida	38 min
Jul 14, 4:31 PM MDT	Special Weather Statement	PIH	Butte	44 min
Jul 14, 4:44 PM MDT	Flash Flood Warning	PIH	Butte, Clark, Custer	3 hr
Jul 14, 4:57 PM MDT	Special Weather Statement	PIH	Power	48 min
Jul 14, 4:58 PM MDT	Severe Thunderstorm Warning	PIH	Bear Lake	32 min
Jul 14, 5:16 PM MDT	Special Weather Statement	PIH	Clark	44 min
Jul 14, 5:21 PM MDT	Special Weather Statement	PIH	Caribou	39 min
Jul 14, 5:22 PM MDT	Special Weather Statement	PIH	Bannock, Power	38 min
Jul 14, 5:29 PM MDT	Severe Thunderstorm Warning	PIH	Bannock, Bingham, Power	46 min
Jul 14, 5:34 PM MDT	Special Weather Statement	PIH	Madison	41 min
Jul 14, 5:45 PM MDT	Severe Thunderstorm Warning	PIH	Bingham, Blaine, Butte, Minidoka	45 min

Nearby

Severe Thunderstorm Warnings in Idaho, 2014 Every 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.