Alert archive / Idaho / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 14, NWS Pocatello, ID

July 18, 2000Butte County, Idaho

NWS Pocatello, ID issued this severe thunderstorm warning at Jul 18, 2000, 1:11 AM MDT for Butte County, Idaho. It was in force for 44 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: Jul 18, 2000, 1:11 AM MDT (07:11 UTC)
Expired: Jul 18, 2000, 1:55 AM MDT
In force: 44 min
Issued by: NWS Pocatello, ID
Area: Whole counties

County Butte County, ID

The nearest sounding before it

Boise Airport, ID (KBOI), launched 00:00Z, 7.2 hours before the alert went out and 244 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: 46 J/kg
Mixed-layer CIN: -134 J/kg
Mixed-layer LCL: 3221 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 23 m²/s²
0-3 km storm-relative helicity: 100 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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 17, 9:40 PM MDT, 3 hours 31 minutes earlier.

Area forecast discussion, Jul 17, 9:40 PM MDT, 3 hours 31 minutes before

SOUTHEAST IDAHO AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE POCATELLO/IDAHO FALLS ID
940 PM MDT MON JUL 17 2000

ACTIVE WEATHER NIGHT WITH TSRA (SOME SEVERE) OVER PIH CWA.  MONSOONAL
RH FINALLY ENTRENCHED IN MOST OF PIH CWA...EXCEPT FROM SNT-LLJ N TO
SMN WHERE DRY AIR STILL HOLDING ON.  MSAS DATA SHOWS DOUBLE THETA-E
MAXIMA STRUCTURE OVER ARCO AND IPR LAST FEW HOURS AND EXPECT
CONVECTION TO CONTINUE OVERNIGHT.  MODELS BRING IN SERIES OF VORT
MAXES ACROSS CENTRAL ID MOUNTAINS ON TUE FOR SCATTERED POPS
AGAIN....THIS WILL NEED TO BE ASSESSED BY THE MID SHIFT.  WILL CUT
POPS BACK A BIT OVERNIGHT BUT STILL IN SCATTERED BRACKET.  TEMPS ON
TRACK.  ZFP UPDATES ON THE WAY.
TA
^
.KSFX WSR-88D...OPERATIONAL...VCP 11.

BYI 58/91/57/91 5222

.PIH...NONE.

PIH BB 055/089 052/089 051 02522

In the hours before

Local storm report, Jul 17, 9:56 PM MDT, 3 hours 15 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO/IDAHO FALLS
955 PM MST MON JUL 17 2000

TIME (MST) .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

430 PM     MACKAY                    ID   WIND DAMAGE
07/17/00   CUSTER                         TREE BLOWN DOWN ON TO TRANSFORMER.

430 PM     HOWE                      ID   WIND DAMAGE
07/17/00   BUTTE                          4 MILES EAST OF HOWE IDAHO. TREE
                                          LIMBS BREAKING OFF DUE TO WIND.

430 PM     HOWE                      ID   WIND GUST
07/17/00   BUTTE                          WIND GUST AT 58 MPH.

458 PM     HOWE                      ID   WIND GUST
07/17/00   BUTTE                          10 NM EAST OF HOWE. WIND GUST
                                          TO 59 MPH.

545 PM     SAGE JUNCTION             ID   WIND GUST
07/17/00   BUTTE                          PORT OF ENTRY. WIND GUST MEASURED
                                          TO 56 MPH.

540 PM     ROBERTS                   ID   TORNADO
07/17/00   JEFFERSON                      FROM SPOTTER. 3 MINUTES ON THE GROUND.
                                          NO DAMAGE.

550 PM     KETTLE BUTTE              ID   WIND GUST
07/17/00   BONNEVILLE                     15 NM S OF ROBERTS IDAHO. WIND GUST
                                          MEASURED TO 64 MPH.

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 17, 6:17 PM MDT	Severe Thunderstorm Warning	PIH	Cassia	18 min
Jul 18, 1:05 AM MDT	Severe Thunderstorm Warning	PIH	Butte	30 min
Jul 18, 1:30 PM MDT	Severe Thunderstorm Warning	PIH	Butte	25 min
Jul 18, 2:16 PM MDT	Severe Thunderstorm Warning	PIH	Jefferson	44 min
Jul 18, 2:37 PM MDT	Severe Thunderstorm Warning	PIH	Fremont, Madison	63 min

Nearby

Severe Thunderstorm Warnings in Idaho, 2000 Every severe thunderstorm warning in 2000

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.