Alert archive / California / Flash Flood Warnings in 2019
Flash Flood Warning 79, NWS Phoenix, AZ
NWS Phoenix, AZ issued this flash flood warning at Sep 23, 2019, 9:41 PM PDT for Imperial County, California; Yuma County, Arizona. It was in force for 4 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
- Sep 23, 2019, 9:41 PM PDT (04:41 UTC)
- Expired
- Sep 24, 2019, 1:45 AM PDT
- In force
- 4 hr
- Issued by
- NWS Phoenix, AZ
- Area
- Storm-based polygon
- Flood severity
- None
Counties Yuma County, AZ, Imperial County, CA
The radar
The Yuma radar (KYUX), 49 km from the middle of the area, began a volume at 04:45 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.
Did it verify
Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this flash flood warning while it was in force. That is not proof nothing happened: reports are thin where few people live.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The nearest sounding before it
Phoenix, AZ (KPSR), launched 00:00Z, 4.7 hours before the alert went out and 227 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
- 161 J/kg
- Mixed-layer CIN
- -184 J/kg
- Mixed-layer LCL
- 1857 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- -79 m²/s²
- 0-3 km storm-relative helicity
- 62 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -0.9
The text
As transmitted.
123
WGUS55 KPSR 240441
FFWPSR
AZC027-CAC025-240845-
/O.NEW.KPSR.FF.W.0079.190924T0441Z-190924T0845Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Phoenix AZ
941 PM MST Mon Sep 23 2019
The National Weather Service in Phoenix has issued a
* Flash Flood Warning for...
Central Yuma County in southwestern Arizona...
Eastern Imperial County in southeastern California...
* Until 145 AM MST/145 AM PDT/.
* At 940 PM MST/940 PM PDT/, Doppler radar indicated thunderstorms
producing heavy rain across the warned area. Up to two inches of
rain have already fallen. Flash flooding is expected to begin
shortly.
* Some locations that will experience flooding include...
Wellton, Tacna, Winterhaven, Kinter and Roll.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, country roads, farmland, and other low lying
spots.
In hilly terrain there are hundreds of low water crossings which are
potentially dangerous in heavy rain. Do not attempt to cross flooded
roads. Find an alternate route.
&&
LAT...LON 3296 11425 3291 11394 3270 11391 3266 11416
3273 11417 3272 11439 3273 11465 3281 11470
3289 11445
$$
CK2 follow-up statements
797
WGUS75 KPSR 240546
FFSPSR
Flash Flood Statement
National Weather Service Phoenix AZ
1046 PM MST Mon Sep 23 2019
AZC027-CAC025-240845-
/O.CON.KPSR.FF.W.0079.000000T0000Z-190924T0845Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Yuma AZ-Imperial CA-
1046 PM MST Mon Sep 23 2019
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 145 AM MST/145 AM
PDT/ FOR CENTRAL YUMA AND EASTERN IMPERIAL COUNTIES...
At 1045 PM MST/1045 PM PDT/, Doppler radar indicated thunderstorms
still producing heavy rain across the warned area. Around two inches
of rain have already fallen. Flash flooding is expected to begin
shortly.
Some locations that will experience flooding include...
Wellton, Tacna, Winterhaven, Kinter and Roll.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, country roads, farmland, and other low lying
spots.
In hilly terrain there are hundreds of low water crossings which are
potentially dangerous in heavy rain. Do not attempt to cross flooded
roads. Find an alternate route.
&&
LAT...LON 3296 11425 3291 11394 3270 11391 3266 11416
3273 11417 3272 11439 3273 11465 3281 11470
3289 11445
$$
CK950
WGUS75 KPSR 240837
FFSPSR
Flash Flood Statement
National Weather Service Phoenix AZ
137 AM MST Tue Sep 24 2019
AZC027-CAC025-240846-
/O.EXP.KPSR.FF.W.0079.000000T0000Z-190924T0845Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Yuma AZ-Imperial CA-
137 AM MST Tue Sep 24 2019
...THE FLASH FLOOD WARNING FOR CENTRAL YUMA AND EASTERN IMPERIAL
COUNTIES WILL EXPIRE AT 145 AM MST/145 AM PDT/...
The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed any remaining road closures.
LAT...LON 3296 11425 3291 11394 3270 11391 3266 11416
3273 11417 3272 11439 3273 11465 3281 11470
3289 11445
$$
CKWhat forecasters said that day
The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Phoenix, AZ wrote its last area forecast discussion before this flash flood warning went out at Sep 23, 5:18 PM PDT, 4 hours 23 minutes earlier.
Area forecast discussion, Sep 23, 5:18 PM PDT, 4 hours 23 minutes before
Area Forecast Discussion
National Weather Service Phoenix AZ
518 PM MST Mon Sep 23 2019
.UPDATE...Updated Aviation Discussion.
&&
.SYNOPSIS...
Multiple periods of scattered to widespread showers and
thunderstorms are expected through Tuesday morning across south
central and southwest Arizona. Locally heavy rainfall capable of
producing flash flooding along with isolated severe thunderstorms
capable of producing large hail and damaging winds are expected.
Although rain chances will begin to decrease on Tuesday, elevated
rain chances will linger through Thursday as the upper level
disturbance remains near the region with the best rain chances
Wednesday night into Thursday. This disturbance will move east of
the region Friday, with drier conditions expected this weekend.
&&
.DISCUSSION...
Very unusual setup has materialized across the Desert Southwest
today. An anomalous trough continues to dig southward towards Las
Vegas with abundant tropical moisture streaming northeastward
ahead of the vort max across Arizona. Heavy rain with rates of up to
2 inches per hour developed early this morning along essentially what
could be classified as a warm front. Training cells within this area
produced as much as 3 to 7 inches of rain along portions of the Salt
River, near Horse Mesa Dam and Roosevelt Lake.
Latest mesoanalysis depicts a widespread area of 2000+ J/kg of CAPE
with little CIN, particularly across west-central Arizona. However,
lapse rates have been poor due to the lack of insolation, which has
inhibited the coverage of storms. Nevertheless, conditions remain
favorable for additional strong to severe storms into this evening
and a Severe Thunderstorm Watch remains in effect. Models indicate
the upper low to our northwest will close off, with cooler air in
the mid-levels overspreading the region. Synoptic-scale jet-forced
ascent will also be present in the entrance region of a jet streak
near the Four Corners.
CAMs are not completely in agreement though the general consensus
suggests that multicellular activity will gradually migrate west to
east ahead of the closed low and persist late this afternoon into
this evening. Although low-level temperatures have cooled
considerably behind an outflow boundary across central Arizona,
larger-scale forcing for ascent will predominate, tapping into the
elevated instability indicated in the latest ACARS soundings. Main
threats remain strong winds, hail and heavy rain. Meanwhile, high
probabilities of significant updraft helicities suggest that
storm-scale rotation and isolated tornadoes will also remain a threat
into late afternoon, but then diminish this evening. Later tonight,
latest HREF suggests another batch of convection will move through
central Arizona and PoPs of 60-80 near the National Blend
were retained.
&&
.PREVIOUS DISCUSSION...
Activity should wane in our area by late Tuesday morning although
enough moisture will be present that lingering showers will be
possible. However, given the close proximity of the upper-level
disturbance that should eventually stall over the northern Gulf of
California and uncertainties in when third more linear period of
storms will occur, we elected to keep the Flash Flood Watch in
place through 11 AM MST Tuesday. Some hi-res guidance shows
isolated showers and storms over Gila and eastern Maricopa
Counties Tuesday afternoon as a cutoff low takes shape, but there
is still considerable uncertainty there. Residual moisture and a
second Pacific trough later in the week justify elevated PoPs in
the forecast, primarily for Maricopa County eastward, late
Wednesday and Thursday as the trough finally opens up and ejects
to the east as it is kicked out by a much stronger longwave trough
upstream. As for temperatures, the persistent troughing and
shortwaves will keep a cooler airmass in place resulting in
daytime temperatures below seasonal normal values through the
forecast period.
&&
.AVIATION...Updated at 0016Z
South-Central Arizona including KPHX, KIWA, KSDL, and KDVT:
Latest radar shows scattered showers along with a few
thunderstorms across the Phoenix metro this afternoon. Vicinity
showers and thunderstorms will be possible over the next couple of
hours though can't rule out a few of these directly impacting the
terminals at some point during that time. CIGs look to remain aoa
6 kft for the most part but can't rule CIGs briefly dropping
below that. Thunderstorm activity should mostly diminish by 02Z
with lingering showers possible into late this evening. HiRes
guidance suggests redevelopment early Tuesday morning so have
added VCTS to the TAFs. Thunderstorm activity early Tuesday
morning should wrap up by 12Z with some lingering showers
possible.
Winds should favor an east to northeast component through Tuesday
morning but showers and thunderstorms may result in temporary wind
shifts. Confidence in the directions of those temporary shifts is
low. Winds may gust upwards of 25 kts at times at the terminals.
Southeast California/Southwest Arizona including KIPL and KBLH:
Mostly clear skies continue across much of southeast California
this afternoon. Expect bases to remain aoa 7 kft at the terminals.
Not expecting any shower or thunderstorm activity at the terminals
so have made no mention in the TAFs. Varying amounts of mid and
high level cloud cover with bases aoa 7 kft will be possible
through much of the TAF period. A few gusts upwards of 20-25 kts
will be possible but should taper off over the next couple of
hours. Winds may become light and variable at times during the
early morning hours of Tuesday.
Aviation Discussion not updated for amended TAFs.
&&
.FIRE WEATHER...
Thursday through Monday:
The threat of scattered precipitation will continue into Thursday
as a low pressure system remains situated across the Desert
Southwest. A slight warming and drying trend is then expected
Friday and Saturday as high pressure builds across the region.
Cooler conditions are likely by Sunday as a broad area of low
pressure settles across the intermountain West. Minimum relative
humidities are generally expected to remain above 15 percent
through next week, even across southeastern California. Somewhat
stronger winds are possible Sunday associated with the low
pressure system.
&&
.SPOTTER INFORMATION STATEMENT...
Spotters should follow standard reporting procedures.
&&
.PSR WATCHES/WARNINGS/ADVISORIES...
AZ...Flash Flood Watch through Tuesday morning for AZZ531-533-534-537-
538-540>558-560>563.
CA...None.
&&
DISCUSSION...Hirsch
PREVIOUS DISCUSSION...Hopper/Deems
AVIATION...Smith
FIRE WEATHER...HirschIn the hours before
Local storm report, Sep 23, 7:37 PM PDT, 2 hours 4 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PHOENIX AZ
737 PM MST MON SEP 23 2019
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0532 PM HAIL 2 SSW WADDELL 33.59N 112.41W
09/23/2019 M1.00 INCH MARICOPA AZ PUBLIC
PICTURE FROM SOCIAL MEDIA. TIME ESTIMATED
FROM RADAR.
&&Special weather statement, Sep 23, 8:04 PM PDT, 1 hour 37 minutes before
Special Weather Statement National Weather Service Phoenix AZ 804 PM MST Mon Sep 23 2019 AZZ532-535-536-240400- Gila River Valley AZ-Southeast Yuma County AZ-Yuma AZ- 804 PM MST Mon Sep 23 2019 ...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL YUMA COUNTY UNTIL 900 PM MST... At 804 PM MST, Doppler radar was tracking a strong thunderstorm over Ligurta, or near Fortuna Foothills, moving east at 20 mph. Pea size hail and wind gusts up to 50 mph will be possible with this storm. Locations impacted include... Fortuna Foothills, Wellton, Blaisdell, Tacna, Kinter, Ligurta and Roll. This includes the following highways... AZ Interstate 8 between mile markers 13 and 44. AZ Route 95 between mile markers 35 and 43. PRECAUTIONARY/PREPAREDNESS ACTIONS... Torrential rainfall is also occurring with this storm, and may lead to localized flooding. Do not drive your vehicle through flooded roadways. Frequent cloud to ground lightning is occurring with this storm. Lightning can strike 10 miles away from a thunderstorm. Seek a safe shelter inside a building or vehicle. && LAT...LON 3250 11442 3280 11444 3289 11394 3249 11388 TIME...MOT...LOC 0304Z 263DEG 18KT 3266 11430 Iniguez
Special weather statement, Sep 23, 8:53 PM PDT, 48 minutes before
Special Weather Statement
National Weather Service Phoenix AZ
853 PM MST Mon Sep 23 2019
AZZ531-536-240445-
Gila River Valley AZ-Kofa AZ-
853 PM MST Mon Sep 23 2019
...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN LA PAZ AND NORTH
CENTRAL YUMA COUNTIES UNTIL 945 PM MST...
At 853 PM MST, Doppler radar was tracking strong thunderstorms along
a line extending from 17 miles northeast of Yuma Proving Ground to 17
miles northwest of Tyson. Movement was northeast at 15 mph.
Half inch hail and wind gusts up to 50 mph will be possible with
these storms.
Locations impacted include...
Palm Canyon.
This includes AZ Route 95 between mile markers 71 and 80.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Torrential rainfall is also occurring with these storms, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
&&
LAT...LON 3324 11430 3347 11406 3347 11404 3308 11378
3286 11411
TIME...MOT...LOC 0353Z 204DEG 15KT 3327 11418 3301 11407
CKSpecial weather statement, Sep 23, 8:57 PM PDT, 44 minutes before
Special Weather Statement
National Weather Service Phoenix AZ
857 PM MST Mon Sep 23 2019
AZZ531-532-536-CAZ565-569-240445-
Gila River Valley AZ-Kofa AZ-Yuma AZ-Imperial County Southeast CA-
Palo Verde Valley CA-
857 PM MST Mon Sep 23 2019
...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN LA PAZ...WEST
CENTRAL YUMA AND SOUTHEASTERN IMPERIAL COUNTIES UNTIL 945 PM MST/945
PM PDT/...
At 857 PM MST/857 PM PDT/, Doppler radar was tracking a strong
thunderstorm over Winterhaven, or near Yuma, moving northeast at 20
mph.
Half inch hail and wind gusts up to 50 mph will be possible with this
storm.
Locations impacted include...
Winterhaven and Andrade.
This includes the following highways...
AZ Interstate 8 near mile marker 1.
CA Interstate 8 between mile markers 89 and 96.
AZ Route 95 between mile markers 39 and 60.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
&&
LAT...LON 3271 11473 3272 11472 3273 11475 3278 11478
3305 11426 3282 11414 3269 11472
TIME...MOT...LOC 0357Z 244DEG 15KT 3277 11461
CKSpecial weather statement, Sep 23, 9:17 PM PDT, 24 minutes before
Special Weather Statement National Weather Service Phoenix AZ 917 PM MST Mon Sep 23 2019 AZZ538-240500- Tonopah Desert AZ- 917 PM MST Mon Sep 23 2019 ...SIGNIFICANT WEATHER ADVISORY FOR MARICOPA COUNTY UNTIL 1000 PM MST... At 917 PM MST, Doppler radar was tracking a strong thunderstorm over Wintersburg, or near Tonopah, moving east at 20 mph. Pea size hail and winds in excess of 40 mph will be possible with this storm. Locations impacted include... Buckeye, Tonopah, Palo Verde Nuclear Generation Station and Wintersburg. This includes AZ Interstate 10 between mile markers 92 and 110. PRECAUTIONARY/PREPAREDNESS ACTIONS... Torrential rainfall is also occurring with this storm, and may lead to localized flooding. Do not drive your vehicle through flooded roadways. Frequent cloud to ground lightning is occurring with this storm. Lightning can strike 10 miles away from a thunderstorm. Seek a safe shelter inside a building or vehicle. && LAT...LON 3329 11301 3344 11310 3364 11276 3339 11265 TIME...MOT...LOC 0417Z 251DEG 17KT 3345 11286 CK
Special weather statement, Sep 23, 9:23 PM PDT, 18 minutes before
Special Weather Statement National Weather Service Phoenix AZ 923 PM MST Mon Sep 23 2019 AZZ532-536-240515- Gila River Valley AZ-Yuma AZ- 923 PM MST Mon Sep 23 2019 ...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL YUMA COUNTY UNTIL 1015 PM MST... At 923 PM MST, Doppler radar was tracking a strong thunderstorm near Wellton, or 20 miles east of Fortuna Foothills, moving east at 15 mph. Half inch hail and wind gusts up to 50 mph will be possible with this storm. Locations impacted include... Wellton, Ligurta, Tacna, Tyson, Kinter and Roll. This includes AZ Interstate 8 between mile markers 20 and 54. PRECAUTIONARY/PREPAREDNESS ACTIONS... Torrential rainfall is also occurring with this storm, and may lead to localized flooding. Do not drive your vehicle through flooded roadways. Frequent cloud to ground lightning is occurring with this storm. Lightning can strike 10 miles away from a thunderstorm. Seek a safe shelter inside a building or vehicle. && LAT...LON 3261 11428 3276 11440 3290 11380 3269 11373 TIME...MOT...LOC 0423Z 264DEG 13KT 3273 11408 CK
The office that day
Everything else NWS Phoenix, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 23, 6:36 PM PDT | Dust Storm Warning | PSR | Imperial | 32 min |
| Sep 23, 9:01 PM PDT | Areal Flood Advisory | PSR | Imperial | 119 min |
| Sep 23, 11:17 PM PDT | Areal Flood Advisory | PSR | Riverside | 3 hr |
| Sep 23, 11:35 PM PDT | Flash Flood Warning | PSR | Riverside | 4 hr |
| Sep 24, 12:30 AM PDT | Areal Flood Advisory | PSR | Riverside | 3 hr |
| Sep 24, 2:25 PM PDT | Flash Flood Watch | PSR | Imperial, Riverside, San Bernardino | 51 hr |
| Sep 23, 5:26 PM PDT | Areal Flood Warning | PSR | Maricopa | 12 hr |
| Sep 23, 5:29 PM PDT | Severe Thunderstorm Warning | PSR | Maricopa | 12 min |
| Sep 23, 5:39 PM PDT | Special Weather Statement | PSR | 36 min | |
| Sep 23, 5:46 PM PDT | Severe Thunderstorm Warning | PSR | Maricopa | 29 min |
| Sep 23, 6:14 PM PDT | Special Weather Statement | PSR | 46 min | |
| Sep 23, 6:24 PM PDT | Areal Flood Advisory | PSR | Maricopa | 2 hr |
| Sep 23, 6:24 PM PDT | Severe Thunderstorm Warning | PSR | Maricopa | 36 min |
| Sep 23, 6:32 PM PDT | Special Weather Statement | PSR | 43 min | |
| Sep 23, 6:38 PM PDT | Areal Flood Advisory | PSR | Maricopa | 2 hr |
| Sep 23, 6:50 PM PDT | Special Weather Statement | PSR | Gila | 40 min |
| Sep 23, 6:56 PM PDT | Severe Thunderstorm Warning | PSR | Gila, Maricopa | 19 min |
| Sep 23, 6:58 PM PDT | Areal Flood Advisory | PSR | Maricopa, Yuma | 3 hr |
| Sep 23, 7:03 PM PDT | Flash Flood Warning | PSR | Maricopa | 4 hr |
| Sep 23, 7:03 PM PDT | Special Weather Statement | PSR | Yuma | 57 min |
| Sep 23, 7:05 PM PDT | Special Weather Statement | PSR | 55 min | |
| Sep 23, 7:24 PM PDT | Flash Flood Warning | PSR | La Paz, Maricopa, Yuma | 5 hr |
| Sep 23, 7:44 PM PDT | Areal Flood Advisory | PSR | Yuma | 3 hr |
| Sep 23, 8:04 PM PDT | Special Weather Statement | PSR | Yuma | 56 min |
| Sep 23, 8:19 PM PDT | Areal Flood Advisory | PSR | Yuma | 3 hr |
| Sep 23, 8:31 PM PDT | Flash Flood Warning | PSR | Yuma | 3 hr |
| Sep 23, 8:53 PM PDT | Special Weather Statement | PSR | Yuma | 52 min |
| Sep 23, 8:57 PM PDT | Special Weather Statement | PSR | Yuma | 48 min |
| Sep 23, 9:08 PM PDT | Areal Flood Advisory | PSR | Maricopa | 112 min |
| Sep 23, 9:11 PM PDT | Areal Flood Advisory | PSR | La Paz, Maricopa | 3 hr |
| Sep 23, 9:17 PM PDT | Special Weather Statement | PSR | Maricopa | 43 min |
| Sep 23, 9:19 PM PDT | Areal Flood Advisory | PSR | La Paz, Yuma | 3 hr |
| Sep 23, 9:23 PM PDT | Special Weather Statement | PSR | Yuma | 52 min |
| Sep 23, 9:56 PM PDT | Special Weather Statement | PSR | 49 min | |
| Sep 23, 10:03 PM PDT | Areal Flood Advisory | PSR | La Paz, Maricopa, Yuma | 3 hr |
| Sep 23, 10:55 PM PDT | Areal Flood Advisory | PSR | Maricopa | 2 hr |
| Sep 23, 10:58 PM PDT | Special Weather Statement | PSR | La Paz | 47 min |
| Sep 23, 11:05 PM PDT | Areal Flood Advisory | PSR | Yuma | 115 min |
| Sep 23, 11:09 PM PDT | Special Weather Statement | PSR | 51 min | |
| Sep 23, 11:14 PM PDT | Flash Flood Warning | PSR | La Paz | 5 hr |
| Sep 23, 11:26 PM PDT | Flash Flood Warning | PSR | La Paz | 5 hr |
| Sep 23, 11:30 PM PDT | Flash Flood Warning | PSR | Maricopa | 4 hr |
| Sep 23, 11:53 PM PDT | Special Weather Statement | PSR | La Paz | 37 min |
| Sep 23, 11:59 PM PDT | Flash Flood Warning | PSR | La Paz | 5 hr |
| Sep 24, 12:58 AM PDT | Flash Flood Warning | PSR | La Paz, Yuma | 5 hr |
| Sep 24, 2:13 AM PDT | Areal Flood Advisory | PSR | Yuma | 2 hr |
| Sep 24, 2:15 AM PDT | Special Weather Statement | PSR | Yuma | 45 min |
| Sep 24, 2:41 AM PDT | Areal Flood Advisory | PSR | Yuma | 2 hr |
| Sep 24, 2:50 AM PDT | Special Weather Statement | PSR | 40 min | |
| Sep 24, 2:52 AM PDT | Special Weather Statement | PSR | Yuma | 38 min |
| Sep 24, 3:25 AM PDT | Special Weather Statement | PSR | Yuma | 35 min |
| Sep 24, 3:52 AM PDT | Special Weather Statement | PSR | Maricopa | 23 min |
| Sep 24, 4:15 AM PDT | Special Weather Statement | PSR | Yuma | 45 min |
| Sep 24, 4:16 AM PDT | Special Weather Statement | PSR | Yuma | 44 min |
| Sep 24, 4:31 AM PDT | Areal Flood Warning | PSR | Maricopa | 12 hr |
| Sep 24, 4:58 AM PDT | Special Weather Statement | PSR | 62 min | |
| Sep 24, 5:19 AM PDT | Areal Flood Advisory | PSR | Maricopa | 12 hr |
| Sep 24, 4:33 PM PDT | Areal Flood Advisory | PSR | Maricopa | 12 hr |
Nearby
Flash Flood Warnings in California, 2019Flash Flood Warnings in Arizona, 2019Every flash flood warning in 2019
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.