Alert archive / Nevada / Flash Flood Warnings in 2018
Flash Flood Warning 4, NWS Reno, NV
NWS Reno, NV issued this flash flood warning at Jul 14, 2018, 7:46 PM PDT for Washoe County, Nevada. It was in force for 3 hr. 2 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jul 14, 2018, 7:46 PM PDT (02:46 UTC)
- Expired
- Jul 14, 2018, 10:45 PM PDT
- In force
- 3 hr
- Issued by
- NWS Reno, NV
- Area
- Storm-based polygon
- Flood severity
- None
County Washoe County, NV
The radar
The Reno radar (KRGX), 33 km from the middle of the area, began a volume at 02:47 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 |
|---|---|---|---|
| Jul 14, 9:22 PM PDT | HEAVY RAIN 0.51 | 2 Nne Sparks, NV | MESONET STATION C7672, 2 NNE SPARKS. THE DURATION OF THE HEAVY RAIN EVENT WAS 24 HOURS. |
| Jul 14, 9:48 PM PDT | HEAVY RAIN 0.42 | 2 Ne Sparks, NV | MESONET STATION C3920, 2 NE SPARKS. THE DURATION OF THE HEAVY RAIN EVENT WAS 24 HOURS. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Reno, NV (KREV), launched 00:00Z, 2.8 hours before the alert went out and 134 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
- 483 J/kg
- Mixed-layer CIN
- -5 J/kg
- Mixed-layer LCL
- 3015 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- 8 m²/s²
- 0-3 km storm-relative helicity
- 8 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
608
WGUS55 KREV 150246
FFWREV
NVC031-150545-
/O.NEW.KREV.FF.W.0004.180715T0246Z-180715T0545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Reno NV
746 PM PDT SAT JUL 14 2018
The National Weather Service in Reno has issued a
* Flash Flood Warning for...
Southern Washoe County in western Nevada...
* Until 1045 PM PDT.
* At 745 PM PDT, trained weather spotters reported thunderstorms
producing heavy rain, up to 0.35 inches in 5 minutes, across the
warned area. Flash flooding is either occurring or expected to
begin shortly.
* Some locations that will experience flooding include...
Reno, Sparks, and Sun Valley.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Flash Flood Warning means that flooding is imminent or occurring.
If you are in the warned area move to higher ground immediately.
Residents living along streams and creeks should take immediate
precautions to protect life and property.
&&
LAT...LON 3956 11981 3960 11976 3961 11971 3953 11969
3952 11978
$$2 follow-up statements
145
WGUS75 KREV 150357
FFSREV
Flash Flood Statement
National Weather Service Reno NV
857 PM PDT SAT JUL 14 2018
NVC031-150545-
/O.CON.KREV.FF.W.0004.000000T0000Z-180715T0545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Washoe NV-
857 PM PDT SAT JUL 14 2018
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1045 PM PDT FOR
SOUTHERN WASHOE COUNTY...
At 855 PM PDT, the rain has ended over the warned area, but runoff
from previous rains, in excess on inch in a short period of time, is
still possible.
Earlier rainfall over the warned area may cause debris flows near
steep terrain on the east side of Sparks.
Some locations that will experience debris flows include...
Sparks and Sun Valley.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Flash Flood Warning means that flooding is imminent or occurring.
If you are in the warned area move to higher ground immediately.
Residents living along streams and creeks should take immediate
precautions to protect life and property.
&&
LAT...LON 3956 11981 3960 11976 3961 11971 3953 11969
3952 11978
$$321
WGUS75 KREV 150540
FFSREV
Flash Flood Statement
National Weather Service Reno NV
1040 PM PDT SAT JUL 14 2018
NVC031-150548-
/O.EXP.KREV.FF.W.0004.000000T0000Z-180715T0545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Washoe NV-
1040 PM PDT SAT JUL 14 2018
...THE FLASH FLOOD WARNING FOR SOUTHERN WASHOE COUNTY WILL EXPIRE AT
1045 PM PDT...
The heavy rain has ended. There may still be a few areas where water
covers the road, the overall risk of flooding has decreased
significantly. Please continue to heed any remaining road closures.
LAT...LON 3956 11981 3960 11976 3961 11971 3953 11969
3952 11978
$$The office that day
Everything else NWS Reno, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 14, 5:09 PM PDT | Special Weather Statement | REV | 51 min | |
| Jul 14, 5:51 PM PDT | Special Weather Statement | REV | Storey | 54 min |
| Jul 14, 6:13 PM PDT | Special Weather Statement | REV | 62 min | |
| Jul 14, 6:24 PM PDT | Severe Thunderstorm Warning | REV | Douglas | 36 min |
| Jul 14, 7:08 PM PDT | Special Weather Statement | REV | Storey | 52 min |
| Jul 14, 7:34 PM PDT | Special Weather Statement | REV | Storey | 41 min |
| Jul 15, 2:45 PM PDT | Heat Advisory | REV | Churchill, Douglas, Lyon, Mineral, Pershing, Storey and 1 more | 4 days |
| Jul 15, 3:36 PM PDT | Special Weather Statement | REV | Churchill, Mineral | 114 min |
Nearby
Flash Flood Warnings in Nevada, 2018Every flash flood warning in 2018
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.