Alert archive / Nevada / Severe Thunderstorm Warnings in 2003
Severe Thunderstorm Warning 18, NWS Reno, NV
NWS Reno, NV issued this severe thunderstorm warning at Aug 4, 2003, 4:13 PM PDT for Washoe County, Nevada. It was in force for 32 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
- Aug 4, 2003, 4:13 PM PDT (23:13 UTC)
- Expired
- Aug 4, 2003, 4:45 PM PDT
- In force
- 32 min
- Issued by
- NWS Reno, NV
- Area
- Whole counties
County Washoe County, NV
The nearest sounding before it
Reno, NV (KREV), launched 12:00Z, 11.2 hours before the alert went out and 174 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
- 266 J/kg
- Mixed-layer CIN
- -76 J/kg
- Mixed-layer LCL
- 1316 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 61 m²/s²
- 0-3 km storm-relative helicity
- 239 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.0
The text
As transmitted, in the capitals the NWS used until 2016.
847
WUUS55 KREV 042313
SVRREV
NVC031-042345-
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE RENO NV
413 PM PDT MON AUG 4 2003
THE NATIONAL WEATHER SERVICE HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHEASTERN WASHOE COUNTY IN WESTERN NEVADA
* UNTIL 445 PM PDT
* AT 410 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM 21 MILES SOUTH OF NIXON...OR ABOUT 18 MILES
NORTHEAST OF VIRGINIA CITY...MOVING NORTHEAST AT 20 MPH.
1 INCH HAIL AND WIND GUSTS TO 70 MPH ARE POSSIBLE WITH THIS SEVERE
THUNDERSTORM. IF YOU ARE IN THE PATH OF THE STORM...PUT YOUR CAR IN
A GARAGE AND MOVE TO A SUBSTANTIAL SHELTER.
HEAVY RAINS MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND
UNDERPASSES. AVOID THESE AREAS AND DO NOT CROSS FLOODED ROADS AS THEY
MAY BE WASHED OUT. WATER LEVELS OF SMALL STREAMS AND RIVERS MAY ALSO
RISE...THEREFORE SEEK HIGHER GROUND IF THREATENED BY FLOOD WATERS.
REPORT DAMAGING WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY
WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST
OFFICE.
$$
LAT...LON 3987 11940 3977 11916 3971 11916 3962 11926
3958 11936 3958 11946 3956 11948 3956 11964What 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 Reno, NV wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 4, 3:00 PM PDT, 1 hour 13 minutes earlier.
Area forecast discussion, Aug 4, 3:00 PM PDT, 1 hour 13 minutes before
WESTERN NEVADA AND EASTERN CALIFORNIA FORECAST DISCUSSION NATIONAL WEATHER SERVICE RENO NV 300 PM PDT MON AUG 4 2003 SOUTHERLY FLOW HAS INCREASED AT THE MID AND UPPER LEVELS TODAY WITH STRONG DRYING INDICATED ABOVE 15K FEET IN THE RENO SOUNDING THIS MORNING. THE AIRMASS REMAINS UNSTABLE ACROSS NE CA AND NRN NV THIS AFTERNOON HOWEVER THE DYNAMICS ARE NOT IMPRESSIVE. TEMPERATURES ARE MARGINAL FOR RELEASING ENERGY IN ORGANIZED THUNDERSTORMS THERE. A FEW STRONG STORMS UNDER UPPER SHEAR ARE STILL POSSIBLE FROM LASSEN TO NRN WASHOE COUNTY YET THIS AFTERNOON AND EARLY EVENING. THE AREA OF MAXIMUM INSTABILITY THEN SHIFTS NORTH INTO OREGON AND IDAHO LATER THIS EVENING AND OVERNIGHT WITH STRONGER UPPER DIVERGENCE. SOME MOISTURE LINGERS NE CA AND NW NV BUT THE AIRMASS IS OTHERWISE DRYING AND STABLE TUESDAY. STRONGER SW WINDS ARE EXPECTED TUESDAY WITH A MODERATE THERMAL GRADIENT FROM NRN CA TO WRN NV. TEMPERATURES FALL SLIGHT TUESDAY WITH LOWER THICKNESS. THERE IS LITTLE CHANGE IN THIS PATTERN THROUGH THURSDAY WITH MODERATELY STRONG SW FLOW BETWEEN AN UPPER RIDGE OVER THE ROCKIES AND A TROUGH OFF THE WEST COAST. OSTERMAN. IN THE EXTENDED...FRIDAY THROUGH MONDAY... MODELS IN AGREEMENT WITH TROF OFF THE PACIFIC NW COAST AND STRONG UPPER HIGH CENTERED OVER THE ERN ROCKIES ON FRIDAY. LATEST UKMET RUN AGREES WITH 00Z GFS WITH HIGH MOVING WEST ACROSS THE 4 CORNERS AREA BY SUNDAY. TROF WILL REMAIN OFFSHORE THRU MONDAY MORNING... GFS BEGINS MOVING TROF ONSHORE MONDAY EVENING. NOT OVERLY CONFIDENT IN MOVEMENT OF TROF OUT IN DAY 7. IN THE MEANTIME... DRY AND STABLE SOUTHWEST FLOW WILL PERSIST THROUGH THE EXTENDED. STRONGER 500 AND 700MB GRADIENT COUPLED WITH WEAK SHORT WAVES ROTATING AROUND PACIFIC TROF WILL ALLOW FOR BREEZY CONDITIONS DURING THE AFTERNOONS AND EVENINGS. TEMPERATURES WILL REMAIN JUST BELOW NORMAL THROUGH SATURDAY... THEN INCREASE A DEGREE OR SO TO NEAR NORMAL SUNDAY AND MONDAY AS HIGH BEGINS TO BUILD BACK WEST. BENINATO .REV...NONE.
Hazardous weather outlook, Aug 4, 6:55 AM PDT, 9 hours 18 minutes before
CAZ070>073-NVZ001>005-051400- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE RENO NV 655 AM PDT MON AUG 04 2003 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN NEVADA...THE EASTERN SIERRA AND NORTHEASTERN CALIFORNIA. .DAY ONE...TODAY SCATTERED THUNDERSTORMS WILL BE SEEN TODAY ACROSS THE NORTH AND EAST. .DAYS TWO THROUGH SEVEN...TUEDAY THROUGH MONDAY THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. .SPOTTER INFORMATION STATEMENT... SKYWARN ACTIVATION IS NOT EXPECTED AT THIS TIME. WEATHER SPOTTERS ARE ASKED TO REPORT SIGNIFICANT WEATHER CONDITIONS TO THEIR LOCAL NATIONAL WEATHER SERVICE OFFICE.
The office that day
Everything else NWS Reno, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 4, 4:44 PM PDT | Severe Thunderstorm Warning | REV | Washoe | 46 min |
| Aug 4, 4:57 PM PDT | Flash Flood Warning | REV | Washoe | 63 min |
Nearby
Severe Thunderstorm Warnings in Nevada, 2003Every severe thunderstorm warning in 2003
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.