Alert archive / Idaho / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 39, NWS Pocatello, ID

July 16, 1996Bonneville County, Idaho

NWS Pocatello, ID issued this severe thunderstorm warning at Jul 16, 1996, 3:16 PM MDT for Bonneville 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 16, 1996, 3:16 PM MDT (21:16 UTC)
Expired
Jul 16, 1996, 4:00 PM MDT
In force
44 min
Issued by
NWS Pocatello, ID
Area
Whole counties

County Bonneville County, ID

The radar

The Pocatello radar (KSFX), 92 km from the middle of the area, began a volume at 21:16 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

Riverton, WY (KRIW), launched 12:00Z, 9.3 hours before the alert went out and 263 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, Riverton, WY at 12:00Z on 1996-07-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 12 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Riverton, WY at 12:00Z on 1996-07-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -5 square meters per square second.19395878Sfc1 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
12 J/kg
Mixed-layer CIN
-161 J/kg
Mixed-layer LCL
2325 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
-5 m²/s²
0-3 km storm-relative helicity
6 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.

000 
TTAA00 KPIH 162115
SVRPIH
IDC019-162200-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE POCATELLO ID
316 PM MDT TUE JUL 16 1996
 
THE NATIONAL WEATHER SERVICE IN POCATELLO HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  400 PM MDT
FOR PEOPLE IN THE FOLLOWING LOCATION......
 
IN SOUTHEAST IDAHO
 
   ...WESTERN BONNEVILLE COUNTY
 
AT 315 PM DOPPLER RADAR INDICATED A SEVERE THUNDERSTORMS LOCATED 15 TO
20 MILES WEST OF IDAHO FALLS.  THIS STORM IS MOVING TO THE EAST AT ABOUT
10 MILES IN HOUR.
 
TRAVELERS ALONG US 20 AND US 26 SHOULD BE PREPARED FOR STRONG GUSTY WINDIN EXCESS OF 55 MILES PER HOUR AND HAIL UP TO THREE QUARTERS OF AN INCH
IN DIAMETER.
 
WHEN THUNDERSTORMS ARE OCCURRING...PEOPLE SHOULD MOVE INSIDE A
STRONG BUILDING.  DO NOT STAND BY WINDOWS.  DON'T USE TELEPHONES
OR ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY UNTIL THE STORM
HAS PASSED.  MOTORISTS SHOULD NOT DRIVE INTO LOW WATER CROSSINJGS.
 
END/JEH

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 16, 1:59 PM MDT, 1 hour 17 minutes earlier.

Area forecast discussion, Jul 16, 1:59 PM MDT, 1 hour 17 minutes before
ALL INGREDIENTS FOR ACTIVE TSTMS IN PLACE THIS AFTERNOON FOR E IDAHO.
DYNAMICS APPEAR FAVORABLE FOR ACTIVE CONVECTION THROUGH THE AFTERNOON
AND WELL INTO TONIGHT WITH 50H SHORTWAVE AND LF QUAD OF 30H JET TRACKING
SW-NE ACROSS THE UPPER SNAKE RIVER VALLEY ENDING UP OVER NW WY BY 12Z.
FEATURES VERY SIMILAR ON ETA AND NGM W/NGM A LITTLE SLOWER THUS WILL
KEEP ACTIVE CONVECTION IN FORECAST THROUGH THE NIGHT IN NORTHERN ZONES.
TROUGH DEEPENS ALONG PAC COAST NEXT 24/36 HOURS WITH GOOD SW FLOW
DEVELOPING OVER ID.   THIS WILL ALLOW A LITTLE WARMING WEDNESDAY AND SET
UP ANOTHER ACTIVE CONVECTION DAY THURSDAY.  LOTS OF WX DEVELOPING SO
WILL KEEP THIS SHORT...  DWG

PIH BT 054/087 052/086 052 01521
IDA BT 053/085 050/085 050 01521

In the hours before

Special weather statement, Jul 16, 9:58 AM MDT, 5 hours 18 minutes before
IDZ003-004-012-162100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE POCATELLO ID
945 AM MDT TUE JUL 16 1996

...STRONG THUNDERSTORMS POSSIBLE ACROSS EASTERN IDAHO TODAY AND
TONIGHT...

THUNDERSTORMS DEVELOPED EARLY THIS MORNING IN NORTHERN NEVADA AND ARE
SLOWLY MOVING TOWARD SOUTH CENTRAL IDAHO.  THESE STORMS WERE SPAWNED
AHEAD OF AN UPPER LEVEL DISTURBANCE THAT IS FORECAST TO MOVE
NORTHEASTWARD ACROSS EASTERN IDAHO THIS AFTERNOON AND TONIGHT.  STRONG
THUNDERSTORMS WILL DEVELOP AS EARLY AS MID DAY OVER CASSIA AND ONEIDA
COUNTIES... WITH STORM DEVELOPMENT PROGRESSIVLY INCREASING OVER THE
UPPER SNAKE RIVER VALLEY AND INTO THE UPPER SNAKE HIGHLANDS DURING THE
AFTERNOON.

THE THUNDERSTORMS EXPECTED TODAY HAVE THE POTENTIAL TO PRODUCE BRIEF
HEAVY RAIN...SMALL HAIL AND GUSTY WINDS.  VISIBILITIES COULD BE BRIEFLY
REDUCED BY BLOWING DUST.. ESPECIALLY IN THE LOWER ELEVATIONS ALONG MAJOR
INTERSTATE AND SECONDARY  HIGHWAYS.  TRAVELLERS.. CAMPERS.. AND OTHER
ENGAGED IN OUTDOOR ACTIVITIES SHOULD BE AWARE OF THE DANGERS ASSOCIATED
WITH THESE STRONG SUMMER THUNDERSTORMS.

DWG
Special weather statement, Jul 16, 12:11 PM MDT, 3 hours 5 minutes before
IDZ003-010-012-162100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE POCATELLO ID
1210 PM MDT TUE JUL 16 1996

...STRONG THUNDERSTORMS DEVELOPING OVER PORTIONS OF EASTERN IDAHO...

POCATELLO/IDAHO FALLS DOPPLER RADAR IS SHOWING THUNDERSTORMS FORMING
RAPIDLY IN PORTIONS OF CUSTER... BUTTE... AND CLARK COUNTIES AT MID DAY.
THESE STORMS ARE STILL DEVELOPING AND COULD PRODUCE LOCALLY HEAVY
RAIN... STRONG GUSTY WINDS AND SOM.E HAIL IN THE NEXT FEW HOURS.
TRAVELLERS.. CAMPERS.. AND OTHERS ENGAGED IN OUTDOOR ACTIVITIES SHOULD
BE AWARE OF THE DANGERS ASSOCIATED WITH THESE STRONG SUMMER
THUNDERSTORMS.

DWG

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 16, 4:39 PM MDTFlash Flood WarningPIHBingham, Bonneville66 min

Nearby

Severe Thunderstorm Warnings in Idaho, 1996Every severe thunderstorm warning in 1996

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.