Alert archive / Idaho / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 34, NWS Pocatello, ID

June 1, 2015Bear Lake County, Caribou County, Franklin County, Idaho

NWS Pocatello, ID issued this severe thunderstorm warning at Jun 1, 2015, 5:47 PM MDT for Bear Lake County, Caribou County, Franklin County, Idaho. It was in force for 43 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: Jun 1, 2015, 5:47 PM MDT (23:47 UTC)
Expired: Jun 1, 2015, 6:30 PM MDT
In force: 43 min
Issued by: NWS Pocatello, ID
Area: Storm-based polygon

Counties Bear Lake County, ID, Caribou County, ID, Franklin County, ID

The radar

The Pocatello radar (KSFX), 119 km from the middle of the area, began a volume at 23:48 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 1, 1:40 PM MDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Salt Lake City I, UT (KSLC), launched 12:00Z, 11.8 hours before the alert went out and 184 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: 11 J/kg
Mixed-layer CIN: -321 J/kg
Mixed-layer LCL: 3463 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 174 m²/s²
0-3 km storm-relative helicity: 197 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 Pocatello, ID wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 1, 1:26 PM MDT, 4 hours 21 minutes earlier.

Area forecast discussion, Jun 1, 1:26 PM MDT, 4 hours 21 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE POCATELLO ID
126 PM MDT MON JUN 1 2015

.SHORT TERM...TONIGHT THROUGH WEDNESDAY.

A COLD FRONT IS MOVING THROUGH THE REGION THIS AFTERNOON. SHOWERS
AND THUNDERSTORM ARE DEVELOPING JUST BEHIND THE FRONT ALONG THE
700MB TROUGH. THE THREAT FOR SEVERE THUNDERSTORMS WILL PERSIST
INTO THE EVENING HOURS WITH LARGE HAIL AND DAMAGING WINDS
POSSIBLE. A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR MUCH OF THE
REGION UNTIL 03Z. MUCH OF THE ACTIVITY WILL MOVE AWAY FROM THE
REGION OVERNIGHT. THUNDERSTORMS ARE POSSIBLE ONCE AGAIN ON
TUESDAY...BUT SHOULD BE MAINLY CONFINED TO THE CENTRAL MOUNTAINS.
EXPECT BREEZY CONDITIONS FOR WEDNESDAY...PROBABLY JUST BELOW LAKE
WIND ADVISORY LEVELS. ANOTHER GOOD CHANCE FOR STORMS AREAWIDE ON
WEDNESDAY AS AN UPPER LOW BEGINS TO DIG INTO THE WEST AND A
SHORTWAVE TROUGH MOVES THROUGH THE REGION.

.LONG TERM...WEDNESDAY NIGHT THROUGH MONDAY. UPPER TROUGH ALONG
PACIFIC COAST DEEPENS AND CLOSES CENTER OFF CALIFORNIA COAST THROUGH
THURSDAY NIGHT. UPPER LOW THEN CONTINUES TO DROP SOUTH TO NEAR SAN
DIEGO FOR THE WEEKEND. SOUTHERLY FLOW MAINTAINS MOISTURE ACROSS EAST
IDAHO. GFS WAVERING SLIGHTLY ON AMOUNT OF MOISTURE AVAILABLE FROM
ANDRES FOR THE WEEKEND...BUT POTENTIAL STILL EXISTS TO SEE AN
INCREASE BY SATURDAY. HAVE KEPT MENTION OF PRECIP EACH DAY ACROSS
THE REGION. DMH

&&

.AVIATION...ACTIVE BAND OF SHOWERS BETWEEN SURFACE COLD FRONT AND
MID LEVEL TROUGH AXIS ACROSS WESTERN IDAHO AND STRETCHING THROUGH
THE CENTRAL MOUNTAINS. MUCH OF EASTERN IDAHO CLEAR AND CONTRIBUTING
TO ACTIVE DESTABILIZATION THIS AFTERNOON. MESOSCALE MODELS CONTINUE
TO POINT AT MID AFTERNOON FOR RAPID DEVELOPMENT OF STRONG
THUNDERSTORMS. STILL EXPECTING AT LEAST ISOLATED THREAT FOR WIND
GUSTS AROUND 60 MPH AND LARGE HAIL. STILL ANTICIPATING MVFR OR IFR
WITHIN ACTIVE CONVECTION UNTIL LATE EVENING. ONCE CONVECTIVE THREAT
AS PASSED EAST IDAHO WILL RETURN TO WIDESPREAD VFR. DMH

&&

.PIH WATCHES/WARNINGS/ADVISORIES...
NONE.
&&

In the hours before

Local storm report, Jun 1, 5:03 PM MDT, 44 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO ID
503 PM MDT MON JUN 01 2015

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

0459 PM     LIGHTNING        1 ESE CLIFTON           42.18N 111.98W
06/01/2015                   FRANKLIN           ID   TRAINED SPOTTER

            UNCONFIRMED PERSON STRUCK BY LIGHTNING IN PRESTON, ID

&&

GWICKLUN

Local storm report, Jun 1, 5:05 PM MDT, 42 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO ID
505 PM MDT MON JUN 01 2015

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

0459 PM     TSTM WND GST     1 ESE CLIFTON           42.18N 111.98W
06/01/2015  E45 MPH          FRANKLIN           ID   TRAINED SPOTTER

            ESTIMATED 45 TO 50 MPH WIND GUSTS

&&

GWICKLUN

Local storm report, Jun 1, 5:07 PM MDT, 40 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO ID
507 PM MDT MON JUN 01 2015

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

0505 PM     TSTM WND GST     1 NNW REXBURG           43.85N 111.79W
06/01/2015  E50 MPH          MADISON            ID   TRAINED SPOTTER

            ESTIMATED WIND GUST OF 50 TO 60 MPH. PEA-SIZE HAIL. VERY
            HEAVY RAINFALL WITH STORM.

&&

GWICKLUN

Local storm report, Jun 1, 5:29 PM MDT, 18 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO ID
529 PM MDT MON JUN 01 2015

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

0415 PM     TSTM WND DMG     PRESTON                 42.10N 111.87W
06/01/2015                   FRANKLIN           ID   TRAINED SPOTTER

            40 PLUS MPH WIND GUSTS. THREE INCH TREE LIMBS ARE BROKEN
            FROM TREES. VINYL FENCE HAS DAMAGE DUE TO BROKEN SLATS
            TORN FREE OF POSTS.

&&

GWICKLUN

Local storm report, Jun 1, 5:32 PM MDT, 15 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO ID
532 PM MDT MON JUN 01 2015

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

0500 PM     TSTM WND DMG     1 ESE CLIFTON           42.18N 111.98W
06/01/2015                   FRANKLIN           ID   TRAINED SPOTTER

            WESTON AND PRESTON EXPERIENCED 45 TO 50 MPH WIND GUSTS.
            SEVERAL POWER POLES ARE DOWN. NO HAIL REPORTED.

&&

GWICKLUN

Local storm report, Jun 1, 5:35 PM MDT, 12 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO ID
535 PM MDT MON JUN 01 2015

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

0520 PM     NON-TSTM WND DMG 8 N RIVERDALE           42.28N 111.84W
06/01/2015                   FRANKLIN           ID   TRAINED SPOTTER

            EXPERIENCED 1/2 INCH HAIL AT TREASURETON.

&&

GWICKLUN

The office that day

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

Issued	Product	Office	Counties	Lasted
May 31, 6:08 PM MDT	Severe Thunderstorm Warning	PIH	Blaine, Cassia, Minidoka, Power	37 min
May 31, 6:46 PM MDT	Severe Thunderstorm Warning	PIH	Bannock, Bingham, Power	44 min
May 31, 6:50 PM MDT	Special Weather Statement	PIH	Fremont	40 min
May 31, 7:30 PM MDT	Special Weather Statement	PIH	Fremont	30 min
May 31, 7:31 PM MDT	Special Weather Statement	PIH	Bannock, Bingham, Power	44 min
May 31, 7:59 PM MDT	Special Weather Statement	PIH	Butte, Jefferson	46 min
May 31, 8:38 PM MDT	Special Weather Statement	PIH	Bingham, Bonneville, Butte, Jefferson, Madison	37 min
May 31, 9:04 PM MDT	Severe Thunderstorm Warning	PIH	Bingham, Bonneville, Fremont, Jefferson, Madison, Teton	41 min
May 31, 9:39 PM MDT	Severe Thunderstorm Warning	PIH	Bonneville, Fremont, Jefferson, Madison, Teton	36 min
May 31, 10:11 PM MDT	Severe Thunderstorm Warning	PIH	Bonneville, Fremont, Jefferson, Madison, Teton	34 min
Jun 1, 4:25 AM MDT	Special Weather Statement	PIH	Custer	80 min
Jun 1, 5:08 AM MDT	Special Weather Statement	PIH	Blaine	82 min
Jun 1, 10:23 AM MDT	Special Weather Statement	PIH	Custer	67 min
Jun 1, 12:57 PM MDT	Special Weather Statement	PIH	Butte	63 min
Jun 1, 1:32 PM MDT	Severe Thunderstorm Warning	PIH	Butte, Custer	33 min
Jun 1, 1:56 PM MDT	Severe Thunderstorm Warning	PIH	Blaine, Cassia, Power	49 min
Jun 1, 2:23 PM MDT	Severe Thunderstorm Warning	PIH	Bingham, Blaine, Butte, Jefferson	52 min
Jun 1, 2:31 PM MDT	Severe Thunderstorm Warning	PIH	Butte, Clark	29 min
Jun 1, 3:03 PM MDT	Special Weather Statement	PIH	Cassia	42 min
Jun 1, 3:05 PM MDT	Severe Thunderstorm Warning	PIH	Cassia	40 min
Jun 1, 3:14 PM MDT	Special Weather Statement	PIH	Butte	2 hr
Jun 1, 3:21 PM MDT	Severe Thunderstorm Warning	PIH	Bannock, Power	39 min
Jun 1, 3:48 PM MDT	Special Weather Statement	PIH	Power	57 min
Jun 1, 3:50 PM MDT	Severe Thunderstorm Warning	PIH	Bannock, Bingham, Power	40 min
Jun 1, 3:58 PM MDT	Severe Thunderstorm Warning	PIH	Bannock, Bingham, Bonneville, Caribou	47 min
Jun 1, 4:10 PM MDT	Severe Thunderstorm Warning	PIH	Bingham, Bonneville	37 min
Jun 1, 4:35 PM MDT	Severe Thunderstorm Warning	PIH	Bannock, Franklin, Oneida	40 min
Jun 1, 4:39 PM MDT	Severe Thunderstorm Warning	PIH	Bannock, Bingham, Bonneville, Jefferson, Madison	35 min
Jun 1, 5:13 PM MDT	Severe Thunderstorm Warning	PIH	Bannock, Bear Lake, Caribou, Franklin, Oneida	35 min
Jun 1, 5:13 PM MDT	Severe Thunderstorm Warning	PIH	Bonneville, Fremont, Madison, Teton	47 min
Jun 1, 5:46 PM MDT	Severe Thunderstorm Warning	PIH	Fremont	24 min

Nearby

Severe Thunderstorm Warnings in Idaho, 2015 Every severe thunderstorm warning in 2015

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.