Alert archive / Arizona / Flash Flood Warnings in 2018
Flash Flood Warning 9, NWS Phoenix, AZ
NWS Phoenix, AZ issued this flash flood warning at Jul 9, 2018, 6:35 PM MST for Maricopa County, Arizona. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 9, 2018, 6:35 PM MST (01:35 UTC)
- Expired
- Jul 9, 2018, 9:30 PM MST
- In force
- 3 hr
- Issued by
- NWS Phoenix, AZ
- Area
- Storm-based polygon
- Flood severity
- None
County Maricopa County, AZ
The radar
The Phoenix radar (KIWA), 80 km from the middle of the area, began a volume at 01:36 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, 1.6 hours before the alert went out and 172 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
- 135 J/kg
- Mixed-layer CIN
- -154 J/kg
- Mixed-layer LCL
- 2233 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- -19 m²/s²
- 0-3 km storm-relative helicity
- 1 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
555 WGUS55 KPSR 100135 FFWPSR AZC013-100430- /O.NEW.KPSR.FF.W.0009.180710T0135Z-180710T0430Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service Phoenix AZ 635 PM MST MON JUL 9 2018 The National Weather Service in Phoenix has issued a * Flash Flood Warning for... Maricopa County in south central Arizona... * Until 930 PM MST. * At 634 PM MST, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Flash flooding is expected to begin shortly. * Some locations that will experience flooding include... Gila Bend, Estrella, Route 238, Bosque and Sonoran National Monument. * This includes the following highways... AZ Route 238 between mile markers 2 and 27. LAT...LON 3307 11234 3296 11231 3288 11260 3298 11269 $$ MS
1 follow-up statement
397 WGUS75 KPSR 100426 FFSPSR Flash Flood Statement National Weather Service Phoenix AZ 926 PM MST MON JUL 9 2018 AZC013-100434- /O.EXP.KPSR.FF.W.0009.000000T0000Z-180710T0430Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Maricopa AZ- 926 PM MST MON JUL 9 2018 ...THE FLASH FLOOD WARNING FOR MARICOPA COUNTY WILL EXPIRE AT 930 PM MST... The heavy rain has ended. However, portions of State Route 238 remain closed due to flooding. A new and separate Areal Flood Warning was issued to reflect this. Thus, this Flash Flood Warning will be allowed to expire. LAT...LON 3307 11234 3296 11231 3288 11260 3298 11269 $$ Hernandez
The office that day
Everything else NWS Phoenix, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 9, 5:06 PM MST | Dust Storm Advisory | PSR | Maricopa | 24 min |
| Jul 9, 5:13 PM MST | Special Weather Statement | PSR | Maricopa | 47 min |
| Jul 9, 5:18 PM MST | Special Weather Statement | PSR | 42 min | |
| Jul 9, 5:22 PM MST | Flash Flood Warning | PSR | Maricopa | 3 hr |
| Jul 9, 5:27 PM MST | Dust Storm Warning | PSR | Maricopa | 63 min |
| Jul 9, 5:35 PM MST | Special Weather Statement | PSR | Maricopa | 40 min |
| Jul 9, 5:50 PM MST | Dust Storm Advisory | PSR | La Paz, Maricopa, Yuma | 25 min |
| Jul 9, 5:53 PM MST | Special Weather Statement | PSR | Maricopa | 52 min |
| Jul 9, 6:00 PM MST | Special Weather Statement | PSR | La Paz | 45 min |
| Jul 9, 6:19 PM MST | Dust Storm Advisory | PSR | La Paz, Maricopa, Yuma | 26 min |
| Jul 9, 6:32 PM MST | Dust Storm Warning | PSR | Maricopa, Yuma | 58 min |
| Jul 9, 6:34 PM MST | Dust Storm Advisory | PSR | La Paz, Maricopa, Yuma | 86 min |
| Jul 9, 6:46 PM MST | Special Weather Statement | PSR | 44 min | |
| Jul 9, 6:59 PM MST | Dust Storm Warning | PSR | Yuma | 31 min |
| Jul 9, 7:22 PM MST | Flash Flood Warning | PSR | Maricopa, Pinal | 6 hr |
| Jul 9, 7:22 PM MST | Special Weather Statement | PSR | Yuma | 38 min |
| Jul 9, 7:25 PM MST | Dust Storm Warning | PSR | La Paz, Yuma | 95 min |
| Jul 9, 7:59 PM MST | Special Weather Statement | PSR | Yuma | 46 min |
| Jul 9, 8:08 PM MST | Severe Thunderstorm Warning | PSR | Yuma | 37 min |
| Jul 9, 8:44 PM MST | Severe Thunderstorm Warning | PSR | Yuma | 31 min |
| Jul 9, 9:24 PM MST | Areal Flood Warning | PSR | Maricopa | 3 hr |
| Jul 10, 2:11 PM MST | Special Weather Statement | PSR | 34 min | |
| Jul 10, 2:26 PM MST | Special Weather Statement | PSR | Gila | 34 min |
| Jul 10, 2:47 PM MST | Dust Storm Advisory | PSR | Maricopa, Pinal | 43 min |
| Jul 10, 2:49 PM MST | Special Weather Statement | PSR | Pinal | 41 min |
| Jul 10, 2:50 PM MST | Special Weather Statement | PSR | Pinal | 40 min |
| Jul 10, 3:32 PM MST | Dust Storm Advisory | PSR | Maricopa, Pinal | 43 min |
| Jul 10, 3:38 PM MST | Special Weather Statement | PSR | 52 min | |
| Jul 10, 3:48 PM MST | Dust Storm Warning | PSR | Maricopa, Pinal | 27 min |
| Jul 10, 4:04 PM MST | Special Weather Statement | PSR | Maricopa | 41 min |
| Jul 10, 4:06 PM MST | Dust Storm Advisory | PSR | Maricopa, Pinal | 39 min |
| Jul 10, 4:13 PM MST | Dust Storm Warning | PSR | Maricopa, Pinal | 47 min |
| Jul 10, 4:16 PM MST | Special Weather Statement | PSR | Pinal | 29 min |
| Jul 10, 4:23 PM MST | Flash Flood Warning | PSR | Gila, Maricopa | 3 hr |
| Jul 10, 4:38 PM MST | Special Weather Statement | PSR | 37 min | |
| Jul 10, 4:53 PM MST | Special Weather Statement | PSR | 37 min | |
| Jul 10, 4:56 PM MST | Dust Storm Advisory | PSR | Maricopa, Pinal | 49 min |
Nearby
Flash Flood Warnings in Arizona, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.