Alert archive / Arizona / Flash Flood Warnings in 2016
Flash Flood Warning 20, NWS Tucson, AZ
NWS Tucson, AZ issued this flash flood warning at Aug 6, 2016, 9:50 PM MST for Pima County, Arizona. It was in force for 115 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 6, 2016, 9:50 PM MST (04:50 UTC)
- Expired
- Aug 6, 2016, 11:45 PM MST
- In force
- 115 min
- Issued by
- NWS Tucson, AZ
- Area
- Storm-based polygon
- Flood severity
- None
County Pima County, AZ
The radar
The Tucson radar (KEMX), 53 km from the middle of the area, began a volume at 04:53 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.
The nearest sounding before it
Tuscon, AZ (KDMA), launched 00:00Z, 4.8 hours before the alert went out and 22 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
- 134 J/kg
- Mixed-layer CIN
- -43 J/kg
- Mixed-layer LCL
- 3103 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- 19 m²/s²
- 0-3 km storm-relative helicity
- 72 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
885
WGUS55 KTWC 070450
FFWTWC
AZC019-070645-
/O.NEW.KTWC.FF.W.0020.160807T0450Z-160807T0645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
950 PM MST SAT AUG 6 2016
THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A
* FLASH FLOOD WARNING FOR...
NORTHEASTERN PIMA COUNTY IN SOUTHEASTERN ARIZONA...
* UNTIL 1145 PM MST
* AT 948 PM MST...DOPPLER RADAR AND AUTOMATED RAIN GAUGES INDICATED
THUNDERSTORMS PRODUCING HEAVY RAIN ACROSS THE THE CATALINA
FOOTHILLS AND CATALINA MOUNTAINS NEAR AND NORTH OF TUCSON. FLASH
FLOODING IS EXPECTED TO BEGIN SHORTLY.
* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
FAR NORTH AND NORTHEAST TUCSON...CATALINA FOOTHILLS...
MOUNT LEMMON/SUMMERHAVEN...AND SABINO CANYON.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.
&&
LAT...LON 3245 11071 3228 11069 3225 11083 3226 11091
3242 11093
$$
MEYER2 follow-up statements
327
WGUS75 KTWC 070538
FFSTWC
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
1038 PM MST SAT AUG 6 2016
AZC019-070645-
/O.CON.KTWC.FF.W.0020.000000T0000Z-160807T0645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
PIMA-
1038 PM MST SAT AUG 6 2016
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1145 PM MST FOR
NORTHEASTERN PIMA COUNTY...
AT 1031 PM MST...THUNDERSTORMS WERE RAPIDLY WEAKENING ACROSS THE
AREA INCLUDING AREAS AROUND THE CATALINA MOUNTAINS AND FOOTHILLS
JUST NORTH OF TUCSON. EARLIER RAINFALL AMOUNTS BETWEEN 1.25 AND 2
INCHES WILL CONTINUE TO GENERATE HEAVY RUNOFF AND ELEVATED FLOW IN
WASHES...STREAMS AND CANYONS.
NORMALLY DRY WASHES AND LOW WATER CROSSINGS MAY BE INUNDATED IN THE
FOLLOWING LOCATIONS...FAR NORTH TUCSON...MOUNT
LEMMON/SUMMERHAVEN...SABINO CANYON AND CATALINA FOOTHILLS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.
&&
LAT...LON 3245 11071 3228 11069 3225 11083 3226 11091
3242 11093
$$
MEYER478
WGUS75 KTWC 070640
FFSTWC
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
1140 PM MST SAT AUG 6 2016
AZC019-070648-
/O.EXP.KTWC.FF.W.0020.000000T0000Z-160807T0645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
PIMA-
1140 PM MST SAT AUG 6 2016
...THE FLASH FLOOD WARNING FOR NORTHEASTERN PIMA COUNTY WILL EXPIRE
AT 1145 PM MST...
THE HEAVY RAIN HAS ENDED. FLOODING IS NO LONGER EXPECTED TO POSE A
THREAT. HOWEVER...PLEASE CONTINUE TO HEED ANY REMAINING ROAD
CLOSURES AS SOME OF THE WASHES WILL CONTINUE TO BE SWOLLEN WITH
WATER FOR ANOTHER HOUR OR SO.
LAT...LON 3245 11071 3228 11069 3225 11083 3226 11091
3242 11093
$$The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 6, 6:01 PM MST | Severe Thunderstorm Warning | TWC | Cochise | 44 min |
| Aug 6, 6:18 PM MST | Flash Flood Warning | TWC | Cochise | 117 min |
| Aug 6, 7:20 PM MST | Special Weather Statement | TWC | Santa Cruz | 25 min |
| Aug 6, 8:48 PM MST | Special Weather Statement | TWC | 42 min | |
| Aug 6, 9:04 PM MST | Areal Flood Advisory | TWC | Pima | 116 min |
Nearby
Flash Flood Warnings in Arizona, 2016Every flash flood warning in 2016
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; radar from the NEXRAD Level II archive.