Alert archive / Idaho / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 25, NWS Pocatello, ID

June 1, 2015Bannock County, Power County, Idaho

NWS Pocatello, ID issued this severe thunderstorm warning at Jun 1, 2015, 3:21 PM MDT for Bannock County, Power County, Idaho. It was in force for 39 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, 3:21 PM MDT (21:21 UTC)
Expired: Jun 1, 2015, 4:00 PM MDT
In force: 39 min
Issued by: NWS Pocatello, ID
Area: Storm-based polygon

Counties Bannock County, ID, Power County, ID

The radar

The Pocatello radar (KSFX), 49 km from the middle of the area, began a volume at 21:23 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, 9.4 hours before the alert went out and 218 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, 1 hour 55 minutes earlier.

Area forecast discussion, Jun 1, 1:26 PM MDT, 1 hour 55 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, 1:53 PM MDT, 1 hour 28 minutes before

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

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

0150 PM     TSTM WND GST     NNW MACKAY              43.92N 113.61W
06/01/2015  E50 MPH          CUSTER             ID   TRAINED SPOTTER

            PEA SIZE HAIL AS WELL.

&&

VALLE

Local storm report, Jun 1, 2:15 PM MDT, 1 hour 6 minutes before

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

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

0150 PM     HAIL             5 SE MACKAY             43.86N 113.54W
06/01/2015  E1.00 INCH       CUSTER             ID   TRAINED SPOTTER

            NEAR LESLIE...IDAHO.

&&

VALLE

Local storm report, Jun 1, 2:31 PM MDT, 50 minutes before

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Local storm report, Jun 1, 3:00 PM MDT, 21 minutes before

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

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

0256 PM     TSTM WND GST     ARCO                    43.63N 113.30W
06/01/2015  E58 MPH          BUTTE              ID   AIRPLANE PILOT

            GUSTS ESTIMATED. VISIBILITY ON HWY 20 FROM INL TO ARCO
            REDUCED TO 5 FEET DUE TO BLOWING DUST. HIGHWAY PATROL ON
            HIGWAY CONTROLLING TRAFFIC.

&&

GWICKLUN

Special weather statement, Jun 1, 3:03 PM MDT, 18 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE POCATELLO ID
303 PM MDT MON JUN 1 2015

IDZ017-022-012145-
EASTERN MAGIC VALLEY ID-SOUTH CENTRAL HIGHLANDS ID-
303 PM MDT MON JUN 1 2015

...DIME SIZE HAIL AND WINDS IN EXCESS OF 30 MPH AFFECTING SOUTHERN
BLAINE...CASSIA...WESTERN ONEIDA AND SOUTHEASTERN MINIDOKA COUNTIES
UNTIL 345 PM MDT...

AT 302 PM MDT...DOPPLER RADAR WAS TRACKING A LINE OF STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM 6 MILES NORTHWEST OF OAKLEY
RESERVOIR TO 13 MILES SOUTHWEST OF ALMO...AND MOVING EAST AT 35 MPH.

DIME SIZE HAIL AND WINDS IN EXCESS OF 30 MPH WILL BE POSSIBLE WITH
THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
BURLEY...RUPERT...HEYBURN...MALTA...LAKE WALCOTT...OAKLEY
RESERVOIR...PAUL...OAKLEY...DECLO...ALBION...MINIDOKA...ELBA...
ALMO...ACEQUIA...INTERSTATE 84 AND 86 JUNCTION...BRIDGE...MT
HARRISON...YALE REST AREA...CITY OF ROCKS AND IDAHOME.

THESE STORMS 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.

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

LAT...LON 4231 11410 4288 11352 4226 11299 4199 11356
      4199 11385
TIME...MOT...LOC 2102Z 250DEG 28KT 4224 11401 4196 11381

HINSBERGER

Special weather statement, Jun 1, 3:14 PM MDT, 7 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE POCATELLO ID
314 PM MDT MON JUN 1 2015

IDZ017-020-031-032-012315-
EASTERN MAGIC VALLEY ID-UPPER SNAKE RIVER PLAIN ID-
BIG AND LITTLE WOOD RIVER REGION ID-LOST RIVER/PASHIMEROI ID-
314 PM MDT MON JUN 1 2015

...WIND GUSTS UP TO 50 MPH FOR NORTHWESTERN BINGHAM...SOUTHWESTERN
JEFFERSON...EAST CENTRAL BLAINE...SOUTHERN BUTTE AND NORTHWESTERN
BONNEVILLE COUNTIES UNTIL 5 PM MDT...

AT 311 PM MDT...STRONG OUTFLOW WINDS CONTINUE THROUGH THE ARCO
DESERT. WIND GUSTS AROUND 50 MPH WILL BE POSSIBLE THROUGH 5 PM.

LOCATIONS IMPACTED INCLUDE...
ARCO...SOUTHWEST INL...CRATERS OF THE MOON...CENTRAL INL...SOUTHEAST
INL...BUTTE CITY...HOWE AND BIG SOUTHERN BUTTE.

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

LAT...LON 4392 11283 4363 11251 4361 11252 4320 11354
      4320 11356 4360 11366
TIME...MOT...LOC 2111Z 339DEG 7KT 4377 11283 4348 11353

DMH

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, 3:48 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
Jun 1, 5:47 PM MDT	Severe Thunderstorm Warning	PIH	Bear Lake, Caribou, Franklin	43 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.