Alert archive / Nevada / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 57, NWS Las Vegas, NV
NWS Las Vegas, NV issued this severe thunderstorm warning at Aug 28, 1997, 2:50 PM PDT for Clark County, Nevada. It was in force for 2 hr. 2 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Aug 28, 1997, 2:50 PM PDT (21:50 UTC)
- Expired
- Aug 28, 1997, 4:55 PM PDT
- In force
- 2 hr
- Issued by
- NWS Las Vegas, NV
- Area
- Whole counties
County Clark County, NV
The radar
The Las Vegas radar (KESX), 58 km from the middle of the area, began a volume at 21:50 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 28, 3:08 PM PDT | Hail 0.75 | Boulder City, NV | Dime-sized hail was observed by a storm spotter in Boulder City. |
| Aug 28, 3:14 PM PDT | Thunderstorm Wind 50 | Boulder City Arpt, NV | A peak wind of 58 mph was recorded at the Boulder City Airport along with small hail and very heavy rain. |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The nearest sounding before it
Mercury/Desert R, NV (KDRA), launched 12:00Z, 9.8 hours before the alert went out and 99 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
- 3393 m above ground
- 0-6 km bulk shear
- 2 kt
- 0-1 km storm-relative helicity
- -45 m²/s²
- 0-3 km storm-relative helicity
- -15 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Las Vegas, NV wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 28, 9:14 AM PDT, 5 hours 36 minutes earlier.
Area forecast discussion, Aug 28, 9:14 AM PDT, 5 hours 36 minutes before
MOJAVE DESERT/SOUTHERN GREAT BASIN AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE LAS VEGAS NV 910 AM PDT THU AUG 28 1997 UPDTS ALREADY SENT...PRIMARILY TO BEEF UP TSTM WORDING ALONG CO RVR AND EWD INTO NWRN AZ WHERE BEST THREAT OF STG/SVR STORMS REMAINS. A FFA FOR NW AZ IS UNDER CONSIDERATION BASED ON CONTD THREAT FOR HEAVY RAIN FRM STORMS AND THE FACT THAT SVRL AREAS INCLDG IGM WHERE HARD HIT YESTERDAY. 14Z SFC ANALYSIS INDCS TWO LOW LVL MSTR TONGUES ACRS AREA. ONE FRM VCNTY DAG S-SEWD TO BLH AND YUM. THE OTHER FRM LAS/LSV TO IGM AND PHX. YUM AND LAS VWPS INDC A SHALLOW SLY FLOW (SFC-5KFT) WHICH MAY YET REINFORCE LOW LV MSTR UP CO RVR VLY TDA. HOWEVER...THE LOW LVL MSTR INCR IN SRN CLARK CO AND LAS VALLEY WAS FRM TSTM OUTFLOW LAST EVE...NOT A SUSTAINED GULF OF CA SURGE. LONGER WV STLT IMAGES PERHAPS THE MOST TELLING AS ONE CAN IDENTIFY VORT VCNTY LAKE MEAD WITH TAIL OR SHEAR LOBE EXTENDING S TO BLH. THE TAIL END OF THIS SYS MAY YET HELP FOCUS TSTMS IN NWRN AZ TDA AS ADDITIONAL MTSR (SEEN ON WV LOOP) IS DRAWN NWD. SUSPECT THAT MSTR REMAINS VRY SHALLOW ACRS SRN NV WHICH MAY RESULT IN ONLY A ISOLD TSTMS OVR MTNS...BUT TOO CLOSE TO CALL. NO CHGS ELSWHERE AND WILL TAKE A CLOSER LOOK AT INCOMING DATA TO MAKE DECISION ON FFA FOR NW AZ ASAP. LAS 111. NEMETH SRN NV...NONE ERN CA...NONE NW AZ ...NONE
In the hours before
Local storm report, Aug 28, 11:28 AM PDT, 3 hours 22 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LAS VEGAS NEVADA
427 AM PDT THU AUG 28 1997
TIME(PDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0630 PM KINGMAN AZ .75 INCH HAIL
08/27/97 MOHAVE A SKYWARN SPOTTER REPORTED
DIME-SIZED HAIL WHICH
CAUSED MINOR DAMAGE TO HIS
HOUSE.
0720 PM KINGMAN AZ FLOODING
08/27/97 MOHAVE SEVERAL ROADS ERODED AND
DAMAGED AND ONE ROAD
COMPLETELY WASHED OUT
0800 PM KINGMAN AZ WIND DAMAGE
08/27/97 MOHAVE A ROOF WAS BLOWN OFF A
HOUSE AND ANOTHER OFF A
FITNESS CENTER. NUMEROUS
TREES AND STREET SIGNS
WERE DOWNED BETWEEN 530 PM
AND 8 PM MST.
0800 PM KINGMAN AZ 70 MPH TSTM GUST
08/27/97 MOHAVE A SKYWARN SPOTTER REPORTED
A GUST TO 70 MPH BETWEEN
530 PM AND 8 PM MST. THE
EXACT TIME WAS NOT KNOWN.Local storm report, Aug 28, 11:28 AM PDT, 3 hours 22 minutes before
STORM REPORT...CORRECTED TRANSMISSION TIME
NATIONAL WEATHER SERVICE LAS VEGAS, NV
1128 AM PDT THU AUG 28 1997
TIME(PDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0630 PM KINGMAN AZ .75 INCH HAIL
08/27/97 MOHAVE A SKYWARN SPOTTER REPORTED
DIME-SIZED HAIL WHICH
CAUSED MINOR DAMAGE TO HIS
HOUSE.
0720 PM KINGMAN AZ FLOODING
08/27/97 MOHAVE SEVERAL ROADS ERODED AND
DAMAGED AND ONE ROAD
COMPLETELY WASHED OUT
0800 PM KINGMAN AZ WIND DAMAGE
08/27/97 MOHAVE A ROOF WAS BLOWN OFF A
HOUSE AND ANOTHER OFF A
FITNESS CENTER. NUMEROUS
TREES AND STREET SIGNS
WERE DOWNED BETWEEN 530 PM
AND 8 PM MST.
0800 PM KINGMAN AZ 70 MPH TSTM GUST
08/27/97 MOHAVE A SKYWARN SPOTTER REPORTED
A GUST TO 70 MPH BETWEEN
530 PM AND 8 PM MST. THE
EXACT TIME WAS NOT KNOWN.Local storm report, Aug 28, 11:29 AM PDT, 3 hours 21 minutes before
STORM REPORT...CORRECTED TRANSMISSION TIME
NATIONAL WEATHER SERVICE LAS VEGAS, NV
1128 AM PDT THU AUG 28 1997
TIME(PDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0630 PM KINGMAN AZ .75 INCH HAIL
08/27/97 MOHAVE A SKYWARN SPOTTER REPORTED
DIME-SIZED HAIL WHICH
CAUSED MINOR DAMAGE TO HIS
HOUSE.
0720 PM KINGMAN AZ FLOODING
08/27/97 MOHAVE SEVERAL ROADS ERODED AND
DAMAGED AND ONE ROAD
COMPLETELY WASHED OUT
0800 PM KINGMAN AZ WIND DAMAGE
08/27/97 MOHAVE A ROOF WAS BLOWN OFF A
HOUSE AND ANOTHER OFF A
FITNESS CENTER. NUMEROUS
TREES AND STREET SIGNS
WERE DOWNED BETWEEN 530 PM
AND 8 PM MST.
0800 PM KINGMAN AZ 70 MPH TSTM GUST
08/27/97 MOHAVE A SKYWARN SPOTTER REPORTED
A GUST TO 70 MPH BETWEEN
530 PM AND 8 PM MST. THE
EXACT TIME WAS NOT KNOWN.The office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 28, 1:23 PM PDT | Severe Thunderstorm Warning | VEF | Clark | 47 min |
| Aug 28, 2:15 PM PDT | Severe Thunderstorm Warning | VEF | Clark | 45 min |
| Aug 28, 2:50 PM PDT | Flash Flood Warning | VEF | Clark | 2 hr |
Nearby
Severe Thunderstorm Warnings in Nevada, 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.