Alert archive / Nevada / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 21, NWS Las Vegas, NV
NWS Las Vegas, NV issued this severe thunderstorm warning at Jul 28, 1997, 12:55 PM PDT for Clark County, Nevada; Mohave County, Arizona. It was in force for 65 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 28, 1997, 12:55 PM PDT (19:55 UTC)
- Expired
- Jul 28, 1997, 2:00 PM PDT
- In force
- 65 min
- Issued by
- NWS Las Vegas, NV
- Area
- Whole counties
Counties Mohave County, AZ, Clark County, NV
The nearest sounding before it
Mercury/Desert R, NV (KDRA), launched 12:00Z, 7.9 hours before the alert went out and 162 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
- 15 J/kg
- Mixed-layer CIN
- -190 J/kg
- Mixed-layer LCL
- 2642 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- -9 m²/s²
- 0-3 km storm-relative helicity
- 49 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 KLAS 281957 RRA SVRLAS AZC015-282100- BULLETIN - EBS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE LAS VEGAS NV 1255 PM PDT MON JUL 28 1997 THE NATIONAL WEATHER SERVICE IN LAS VEGAS NV HAS ISSUED A SEVERE THUNDERSTORM AND FLASH FLOOD WARNING EFFECTIVE UNTIL 200 PM PDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTHERN NEVADA ...EXTREME EASTERN CLARK COUNTY AT 1255 PM PDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM LOCATED OVER LAKE MEAD JUST NORTH OF TEMPLE BAR. THIS STORM WAS MOVING NORTH AT 15-20 MPH AND IS EXPECTED TO REACH THE ECHO BAY AREA BETWEEN 115 AND 130 PM PDT. DAMAGING WINDS...ESTIMATED TO NEAR 60 MPH WERE REPORTED BY THE NATIONAL PARK SERVICE AT TEMPLE BAR AT 1242 PM PDT. THESE WINDS CAUSED SHINGLES TO BLOW OFF ROOFS IN THE AREA. AS THIS STORM MOVES NORTH THROUGH THE OVERTON ARM...DAMAGING WINDS IN EXCESS OF 60 MPH CAN BE EXPECTED. HAIL UP TO 1 INCH IN DIAMETER...AND BRIEF PERIODS OF HEAVY RAINFALL ARE ALSO POSSIBLE. THIS EXTENDS AND REPLACES THE WARNING ISSUED EARLIER FOR WESTERN MOHAVE COUNTY ARIZONA. RUNK
1 follow-up statement
000 TTAA00 KLAS 282000 RRB SVRLAS NVC003-282100- BULLETIN - EBS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING...CORRECTED FOR ZONE HEADER NATIONAL WEATHER SERVICE LAS VEGAS NV 1255 PM PDT MON JUL 28 1997 THE NATIONAL WEATHER SERVICE IN LAS VEGAS NV HAS ISSUED A SEVERE THUNDERSTORM AND FLASH FLOOD WARNING EFFECTIVE UNTIL 200 PM PDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTHERN NEVADA ...EXTREME EASTERN CLARK COUNTY AT 1255 PM PDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM LOCATED OVER LAKE MEAD JUST NORTH OF TEMPLE BAR. THIS STORM WAS MOVING NORTH AT 15-20 MPH AND IS EXPECTED TO REACH THE ECHO BAY AREA BETWEEN 115 AND 130 PM PDT. DAMAGING WINDS...ESTIMATED TO NEAR 60 MPH WERE REPORTED BY THE NATIONAL PARK SERVICE AT TEMPLE BAR AT 1242 PM PDT. THESE WINDS CAUSED SHINGLES TO BLOW OFF ROOFS IN THE AREA. AS THIS STORM MOVES NORTH THROUGH THE OVERTON ARM...DAMAGING WINDS IN EXCESS OF 60 MPH CAN BE EXPECTED. HAIL UP TO 1 INCH IN DIAMETER...AND BRIEF PERIODS OF HEAVY RAINFALL ARE ALSO POSSIBLE. THIS EXTENDS AND REPLACES THE WARNING ISSUED EARLIER FOR WESTERN MOHAVE COUNTY ARIZONA. RUNK
The office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 28, 12:55 PM PDT | Flash Flood Warning | VEF | Clark | 65 min |
| Jul 28, 12:15 PM PDT | Flash Flood Warning | VEF | Mohave | 45 min |
| Jul 28, 12:15 PM PDT | Severe Thunderstorm Warning | VEF | Mohave | 45 min |
| Jul 28, 1:37 PM PDT | Severe Thunderstorm Warning | VEF | Mohave | 53 min |
| Jul 28, 2:28 PM PDT | Severe Thunderstorm Warning | VEF | Mohave | 62 min |
Nearby
Severe Thunderstorm Warnings in Nevada, 1997Severe Thunderstorm Warnings in Arizona, 1997Every severe thunderstorm warning in 1997
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.