Alert archive / Idaho / Severe Thunderstorm Warnings in 1994
Severe Thunderstorm Warning 21, NWS Boise, ID
NWS Boise, ID issued this severe thunderstorm warning at Aug 21, 1994, 4:00 PM MDT for Cassia County, Jerome County, Minidoka County, Idaho. It was in force for 60 min.
The area
The counties it named.
The facts
- Issued
- Aug 21, 1994, 4:00 PM MDT (22:00 UTC)
- Expired
- Aug 21, 1994, 5:00 PM MDT
- In force
- 60 min
- Issued by
- NWS Boise, ID
- Area
- Whole counties
Counties Cassia County, ID, Jerome County, ID, Minidoka County, ID
The nearest sounding before it
Boise Airport, ID (KBOI), launched 12:00Z, 10.0 hours before the alert went out and 220 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2513 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 39 m²/s²
- 0-3 km storm-relative helicity
- 86 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KBOI 212201 RRA SVRBOI IDC031-053-067-212300- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE BOISE ID 400 PM MDT SUN AUG 21 1994 THE NATIONAL WEATHER SERVICE IN BOISE ID HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 500 PM MDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTH CENTRAL IDAHO ...NORTHWESTERN CASSIA COUNTY...SOUTHEASTERN JEROME COUNTY ...SOUTHWESTERN MINIDOKA COUNTY AT 350 PM MDT DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM WITH LARGE HAIL IN PROGRESS IN THE NORTHWESTERN CORNER OF CASSIA COUNTY ABOUT TEN MILES WEST OF BURLEY. THE STORM WAS MOVING GENERALLY TOWARD THE NORTH ABOUT 15 MPH. AT THIS SPEED IT WILL CROSS THE SNAKE RIVER AROUND 410 PM MDT AND CONTINUE NORTH ALONG THE JEROME MINIDOKA COUNTY LINE. THE STORM WILL MOVE ACROSS INTERSTATE 84 NEAR BETWEEN MILEPOSTS 190 AND 200. THE CITIES OF BURLEY AND RUPERT WILL BE NEAR THE EASTERN EDGES OF THE STORM. AS OF 350 PM MDT NO GROUND REPORTS DIRECTLY UNDER THE STORM HAD BEEN RECEIVED. IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A STRONG BUILDING. DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN... AND DEADLY LIGHTNING ARE ALL POSSIBLE IN> SEVERE THUNDERSTORMS. STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.
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.
In the hours before
Special weather statement, Aug 21, 2:50 PM MDT, 1 hour 10 minutes before
IDZ002-2022200 SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BOISE ID 250 PM MDT SUN AUG 21 1994 ...STRONG THUNDERSTORMS DEVELOPING SOUTHWEST OF BURLEY... THUNDERSTORMS ARE BUILDING RAPIDLY ALONG A COLD FRONT SOUTHWEST AND SOUTH OF BURLEY IN WESTERLY CASSIA COUNTY. THE THUNDERSTORMS ARE MOVING TOWARDS BURLEY AT 25 MPH. THESE STORMS HAVE THE POTENTIAL TO THESE THUNDERSTORMS HAVE THE POTENTIAL TO PRODUCE BRIEF HEAVY SHOWERS, SMALL HAIL, AND WIND GUSTS TO 40 MPH, ALONG WITH FREQUENT CLOUD-TO- GROUND LIGHTNING. PEOPLE ENGAGED IN OUTDOOR ACTIVITIES SHOULD BE PREPARED TO FIND SHELTER INDOORS OR IN A COVERED MOTOR VEHICLE SHOULD THREATENING WEATHER APPROACH. ...WSFO BOISE...JT
Special weather statement, Aug 21, 2:55 PM MDT, 1 hour 5 minutes before
IDZ002-2022200 SPECIAL WEATHER STATEMENT ...CORRECTION... NATIONAL WEATHER SERVICE BOISE ID 255 PM MDT SUN AUG 21 1994 ...STRONG THUNDERSTORMS DEVELOPING SOUTHWEST OF BURLEY... THUNDERSTORMS ARE BUILDING RAPIDLY ALONG A COLD FRONT SOUTHWEST AND SOUTH OF BURLEY IN WESTEN CASSIA COUNTY. THE THUNDERSTORMS ARE MOVING TOWARDS BURLEY AT 25 MPH. THESE THUNDERSTORMS HAVE THE POTENTIAL TO PRODUCE BRIEF HEAVY SHOWERS, SMALL HAIL, AND WIND GUSTS TO 40 MPH, ALONG WITH FREQUENT CLOUD-TO- GROUND LIGHTNING. PEOPLE ENGAGED IN OUTDOOR ACTIVITIES SHOULD BE PREPARED TO FIND SHELTER INDOORS OR IN A COVERED MOTOR VEHICLE SHOULD THREATENING WEATHER APPROACH. ...WSFO BOISE...JT
Special weather statement, Aug 21, 3:00 PM MDT, 1 hour before
IDZ002-2022200 SPECIAL WEATHER STATEMENT ...CORRECTION...(SPELLING FIRST PARA) NATIONAL WEATHER SERVICE BOISE ID 300 PM MDT SUN AUG 21 1994 ...STRONG THUNDERSTORMS DEVELOPING SOUTHWEST OF BURLEY... THUNDERSTORMS ARE BUILDING RAPIDLY ALONG A COLD FRONT SOUTHWEST AND SOUTH OF BURLEY IN WESTERN CASSIA COUNTY. THE THUNDERSTORMS ARE MOVING TOWARDS BURLEY AT 25 MPH. THESE THUNDERSTORMS HAVE THE POTENTIAL TO PRODUCE BRIEF HEAVY SHOWERS, SMALL HAIL, AND WIND GUSTS TO 40 MPH, ALONG WITH FREQUENT CLOUD-TO- GROUND LIGHTNING. PEOPLE ENGAGED IN OUTDOOR ACTIVITIES SHOULD BE PREPARED TO FIND SHELTER INDOORS OR IN A COVERED MOTOR VEHICLE SHOULD THREATENING WEATHER APPROACH. ...WSFO BOISE...JT
Special weather statement, Aug 21, 3:01 PM MDT, 59 minutes before
IDZ002-2022200 SPECIAL WEATHER STATEMENT ...CORRECTION...(SPELLING FIRST PARA) NATIONAL WEATHER SERVICE BOISE ID 300 PM MDT SUN AUG 21 1994 ...STRONG THUNDERSTORMS DEVELOPING SOUTHWEST OF BURLEY... THUNDERSTORMS ARE BUILDING RAPIDLY ALONG A COLD FRONT SOUTHWEST AND SOUTH OF BURLEY IN WESTERN CASSIA COUNTY. THE THUNDERSTORMS ARE MOVING TOWARDS BURLEY AT 25 MPH. THESE THUNDERSTORMS HAVE THE POTENTIAL TO PRODUCE BRIEF HEAVY SHOWERS, SMALL HAIL, AND WIND GUSTS TO 40 MPH, ALONG WITH FREQUENT CLOUD-TO- GROUND LIGHTNING. PEOPLE ENGAGED IN OUTDOOR ACTIVITIES SHOULD BE PREPARED TO FIND SHELTER INDOORS OR IN A COVERED MOTOR VEHICLE SHOULD THREATENING WEATHER APPROACH. ...WSFO BOISE....JT
Nearby
Severe Thunderstorm Warnings in Idaho, 1994Every severe thunderstorm warning in 1994
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.