Alert archive / Arkansas / Flash Flood Warnings in 2020

Flash Flood Warning 39, NWS Little Rock, AR

June 6, 2020Clark County, Pike County, Arkansas

NWS Little Rock, AR issued this flash flood warning at Jun 6, 2020, 12:39 AM CDT for Clark County, Pike County, Arkansas. It was in force for 109 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: Jun 6, 2020, 12:39 AM CDT (05:39 UTC)
Expired: Jun 6, 2020, 2:28 AM CDT
In force: 109 min
Issued by: NWS Little Rock, AR
Area: Storm-based polygon
Flood severity: None

Counties Clark County, AR, Pike County, AR

The radar

The Little Rock radar (KLZK), 134 km from the middle of the area, began a volume at 05:41 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

Shreveport, LA (KSHV), launched 00:00Z, 5.7 hours before the alert went out and 175 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 949 J/kg
Mixed-layer CIN: -47 J/kg
Mixed-layer LCL: 1751 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: 10 m²/s²
0-3 km storm-relative helicity: 54 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

891 
WGUS54 KLZK 060539
FFWLZK
ARC019-109-060845-
/O.NEW.KLZK.FF.W.0039.200606T0539Z-200606T0840Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Little Rock AR
1239 AM CDT Sat Jun 6 2020

The National Weather Service in Little Rock has issued a

* Flash Flood Warning for...
  Central Clark County in southwestern Arkansas...
  Southeastern Pike County in southwestern Arkansas...

* Until 340 AM CDT.

* At 1239 AM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1 and 3 inches of rain 
  have fallen. Flash flooding is ongoing or expected to begin 
  shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Doppler radar.

  IMPACT...Flooding of small creeks and streams, urban areas,
           highways, streets and underpasses as well as other
           drainage and low lying areas.

* Some locations that will experience flash flooding include...
  Gurdon, Okolona, Beirne, Halfway, Gum Springs in Clark County, 
  Richwoods, Delight, Antoine, Alpine, Billstown, Hollywood, 
  Burtsell, Curtis, Shawmut, Pisgah, Griffithtown and Dalark.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Be especially cautious at night when it is harder to recognize the 
dangers of flooding.

Flooding is occurring or is imminent. It is important to know where 
you are relative to streams, rivers, or creeks which can become 
killers in heavy rains. Campers and hikers should avoid streams or 
creeks.

&&

LAT...LON 3396 9362 3415 9353 3425 9345 3428 9339
      3425 9330 3408 9308 3406 9289 3399 9289
      3399 9295 3383 9322 3385 9329 3387 9330
      3390 9330 3396 9338 3395 9342 3396 9347
      3394 9353 3395 9353

FLASH FLOOD...RADAR INDICATED

$$

67

1 follow-up statement

300 
WGUS74 KLZK 060728
FFSLZK

Flash Flood Statement
National Weather Service Little Rock AR
228 AM CDT Sat Jun 6 2020

ARC019-109-060738-
/O.CAN.KLZK.FF.W.0039.000000T0000Z-200606T0840Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Clark AR-Pike AR-
228 AM CDT Sat Jun 6 2020

...FLASH FLOOD WARNING IS CANCELLED FOR CENTRAL CLARK AND 
SOUTHEASTERN PIKE COUNTIES...

The heavy rain has ended. Flooding is no longer expected to pose a 
threat. Please continue to heed remaining road closures.

LAT...LON 3396 9362 3415 9353 3425 9345 3428 9339
      3425 9330 3408 9308 3406 9289 3399 9289
      3399 9295 3383 9322 3385 9329 3387 9330
      3390 9330 3396 9338 3395 9342 3396 9347
      3394 9353 3395 9353

$$

67

What 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 Little Rock, AR wrote its last area forecast discussion before this flash flood warning went out at Jun 6, 12:25 AM CDT, 14 minutes earlier.

Area forecast discussion, Jun 6, 12:25 AM CDT, 14 minutes before

Area Forecast Discussion
National Weather Service Little Rock AR
1225 AM CDT Sat Jun 6 2020

.AVIATION...Updated with a discussion for the 06/06Z TAFs

Currently monitoring a region of TSRA moving S/W through the
HOT/ADF area. Storms are expected to continue S/Wwrd over the next
few hours, eventually exiting the state early Sat morning. Some
reduced VIS and patchy fog may be possible across the state in the
predawn hours Sat morning. After sunrise, VFR conditions will
persist through the end of the fcst period with light E/NErly
winds.

&&

.PREV DISCUSSION...(ISSUED 238 PM CDT Fri Jun 5 2020)
Short Term...Tonight thru Sunday...
Remnant MCS drifted out of MO this afternoon and started to
intensify as it moved to the southeast. The vast majority of this
ended up east of the LZK forecast area, but one storm became strong
enough to warrant the issuance of a warning.

The area remains on the eastern edge of an upper level ridge. There
is a significant amount of mid-level instability in place across the
area with relatively little CIN in place. Wind shear is minimal. The
dynamics of the ridge seem to be keeping most of the storms over the
eastern portions of the state for the time being.

The short term models have been all over the place in regards to how
to handle the situation today and tonight. NAMNest and WRF models
have been much more prolific with the convection, taking it well
into the western portions of the state. HRRR model families have
been more conservative, and while far from perfect, have been closer
to the current situation. Models show the potential for further
development mainly across the southeast quarter of the state, and I
have gone with this trend. The potential for severe wind gusts
certainly remains thru tonight.

Ridging will continue across the area thru the period, and daily max
temps will remain in the 90's with dewpoints generally in the
70's.

Extended Term...Sunday Night thru Friday...
The main story during the extended period forecast will be the
arrival of Tropical Depression Cristobal. The tropical system is
expected to move into the Gulf of Mexico this evening, and
strengthen into a Tropical Storm as it approaches the United States.
Late this weekend and into early next week, Cristobal is expected to
move through portions of Louisiana, Mississippi, and Arkansas.
Although Cristobal should weaken as it moves through Arkansas, much
of the state will see widespread rainfall Monday through Tuesday
night. Through this period, much of the central and eastern sections
of the state could see between 3 and 5 inches of rain, with lesser
amounts around 2 to 3 inches across western portions of the state.
This will likely change as we proceed through the weekend and into
early portions of the coming week, as any changes to the strength or
path of the storm could alter the forecast. Strong and gusty winds
may also be possible, especially across the southern portions of the
state.

Remnants of the storm will likely merge with troughing across the
Plains regions by mid week, allowing a storm system approaching from
the west to push through the Natural State. An associated surface
cold front will also swing through the state, and help clear out
rain chances on Wednesday and Thursday. Behind this feature, high
pressure will return and help keep conditions dry.

Conditions will be warm and humid, but cloud cover and rainfall from
Cristobal, and the passage of a cold front, will help keep
temperatures more mild than what we've recently seen. In fact, for
most of the period, temperatures should be near normal values for
this time of year.

&&

.LZK Watches/Warnings/Advisories...NONE.
&&

Aviation...GREEN

Hazardous weather outlook, Jun 5, 10:36 PM CDT, 2 hours 3 minutes before

Hazardous Weather Outlook...UPDATED
National Weather Service Little Rock AR
1036 PM CDT Fri Jun 5 2020

ARZ003>008-012>017-021>025-030>034-037>047-052>057-062>069-070345-
Boone-Marion-Baxter-Fulton-Sharp-Randolph-Newton-Searcy-Stone-
Izard-Independence-Lawrence-Johnson-Pope-Van Buren-Cleburne-
Jackson-Logan-Conway-Faulkner-White-Woodruff-Scott-Yell-Perry-
Polk-Montgomery-Garland-Saline-Pulaski-Lonoke-Prairie-Monroe-Pike-
Clark-Hot Spring-Grant-Jefferson-Arkansas-Dallas-Cleveland-
Lincoln-Desha-Ouachita-Calhoun-Bradley-Drew-
1036 PM CDT Fri Jun 5 2020

This Hazardous Weather Outlook is for a Large Part of Arkansas.

.DAY ONE...Tonight

Thunderstorms will continue into the early morning hours in
central and south Arkansas. Some of the storms will be strong to
severe, with the primary hazard being damaging straight line
winds and large hail.

.DAYS TWO THROUGH SEVEN...Saturday Through Thursday

For Saturday and Sunday, with temperatures expected to climb into
the lower 90s and abundant moisture in place near the surface, heat
indices could approach or briefly exceed 100 degrees in some places.

As remnants of Tropical Storm Cristobal approach the state from the
south Monday into Tuesday, widespread rainfall can be expected.
Additional impacts from the system could include locally strong wind
gusts as well as isolated tornadoes. With potential impacts heavily
dependent on the future track of this storm, monitor the latest
forecast information for updates.

.Spotter Information Statement...

Spotter Activation May Be Needed

&&

Visit NWS Little Rock on the web. Go to http://weather.gov/lzk.

51

In the hours before

Local storm report, Jun 5, 10:56 PM CDT, 1 hour 43 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
1056 PM CDT FRI JUN 05 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1040 PM     HAIL             1 N PRATTSVILLE         34.33N  92.54W
06/05/2020  E1.00 INCH       GRANT              AR   TRAINED SPOTTER

&&

EVENT NUMBER LZK2000387

JHOOD

Special weather statement, Jun 5, 11:16 PM CDT, 1 hour 23 minutes before

Special Weather Statement
National Weather Service Little Rock AR
1116 PM CDT Fri Jun 5 2020

ARZ053-054-060445-
Hot Spring AR-Clark AR-
1116 PM CDT Fri Jun 5 2020

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL CLARK AND SOUTH CENTRAL
HOT SPRING COUNTIES UNTIL 1145 PM CDT...

At 1115 PM CDT, Doppler radar was tracking a strong thunderstorm near
DeGray Lake State Park, or 7 miles north of Arkadelphia, moving south
at 10 mph.

Penny size hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Arkadelphia...                    Caddo Valley...
Gum Springs in Clark County...    Richwoods...
Halfway...                        DeGray Lake State Park...
Friendship...                     Bismarck...
Hollywood...                      Lower Lake Recreation Area...
Curtis...                         Midway in Hot Spring County...

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 3432 9319 3429 9295 3396 9300 3409 9334
TIME...MOT...LOC 0415Z 011DEG 8KT 3422 9310

67

Local storm report, Jun 5, 11:26 PM CDT, 1 hour 13 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
1126 PM CDT FRI JUN 5 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0610 PM     HAIL             SLOVAK                  34.65N 91.58W
06/05/2020  E1.00 INCH       PRAIRIE            AR   SOCIAL MEDIA

            AT LEAST QUARTER SIZE HAIL FELL AT SLOVAK.

&&

46

Local storm report, Jun 5, 11:33 PM CDT, 1 hour 6 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
1133 PM CDT FRI JUN 5 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1132 PM     HAIL             DEGRAY LAKE             34.24N 93.18W
06/05/2020  E1.00 INCH       CLARK              AR   EMERGENCY MNGR

            QUARTER EIZE HAIL WAS REPORTED AT LAKE DEGRAY.

&&

46

Special weather statement, Jun 5, 11:57 PM CDT, 42 minutes before

Special Weather Statement
National Weather Service Little Rock AR
1157 PM CDT Fri Jun 5 2020

ARZ052-053-062-066-060530-
Pike AR-Clark AR-Dallas AR-Ouachita AR-
1157 PM CDT Fri Jun 5 2020

...SIGNIFICANT WEATHER ADVISORY FOR CLARK...SOUTHEASTERN PIKE...WEST
CENTRAL DALLAS AND NORTHWESTERN OUACHITA COUNTIES UNTIL 1230 AM
CDT...

At 1157 PM CDT, Doppler radar was tracking a strong thunderstorm near
Halfway, or 10 miles west of Arkadelphia, moving southwest at 20 mph.

Half inch hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Arkadelphia...                    Gurdon...
Caddo Valley...                   Chidester...
Okolona...                        Whelen Springs...
Beirne...                         Gum Springs in Clark County...
Halfway...                        Richwoods...
Poison Springs State Park...      White Oak Lake State Park...
Delight...                        Antoine...
Alpine...                         Curtis...
Reader...                         Vaden...
Dalark...                         Burtsell...

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 3371 9311 3378 9310 3382 9314 3380 9318
      3383 9322 3384 9329 3388 9331 3389 9330
      3392 9334 3394 9334 3396 9338 3395 9342
      3396 9346 3410 9366 3428 9331 3406 9284
      3362 9298
TIME...MOT...LOC 0457Z 039DEG 18KT 3409 9325

67

Local storm report, Jun 6, 12:08 AM CDT, 31 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
1208 AM CDT SAT JUN 06 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1120 PM     TSTM WND DMG     DONALDSON               34.24N  92.92W
06/05/2020                   HOT SPRING         AR   PUBLIC

            POWERLINES WERE KNOCKED DOWN IN THE AREA.

&&

EVENT NUMBER LZK2000388

JHOOD

The office that day

Everything else NWS Little Rock, AR issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 5, 7:01 PM CDT	Severe Thunderstorm Warning	LZK	Arkansas, Jefferson, Lincoln	33 min
Jun 5, 7:30 PM CDT	Special Weather Statement	LZK	Lincoln	45 min
Jun 5, 7:36 PM CDT	Severe Thunderstorm Warning	LZK	Cleveland, Jefferson, Lincoln	37 min
Jun 5, 7:40 PM CDT	Special Weather Statement	LZK	Lonoke	50 min
Jun 5, 8:02 PM CDT	Special Weather Statement	LZK	Lonoke	43 min
Jun 5, 8:11 PM CDT	Special Weather Statement	LZK	Drew	64 min
Jun 5, 8:25 PM CDT	Severe Thunderstorm Warning	LZK	Lonoke, Pulaski	50 min
Jun 5, 9:16 PM CDT	Severe Thunderstorm Warning	LZK	Grant, Jefferson, Lonoke, Pulaski	44 min
Jun 5, 9:18 PM CDT	Special Weather Statement	LZK	Pulaski	42 min
Jun 5, 10:07 PM CDT	Special Weather Statement	LZK	Pulaski	38 min
Jun 5, 10:12 PM CDT	Special Weather Statement	LZK	Grant	48 min
Jun 5, 10:46 PM CDT	Special Weather Statement	LZK	Saline	44 min
Jun 5, 10:49 PM CDT	Severe Thunderstorm Warning	LZK	Dallas, Grant, Hot Spring	41 min
Jun 5, 11:16 PM CDT	Special Weather Statement	LZK	Clark	29 min
Jun 5, 11:20 PM CDT	Severe Thunderstorm Warning	LZK	Clark, Hot Spring	40 min
Jun 5, 11:40 PM CDT	Flash Flood Warning	LZK	Clark, Hot Spring	2 hr
Jun 5, 11:57 PM CDT	Special Weather Statement	LZK	Clark	33 min
Jun 6, 12:15 AM CDT	Severe Thunderstorm Warning	LZK	Clark, Pike	15 min

Nearby

Flash Flood Warnings in Arkansas, 2020 Every flash flood warning in 2020

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.