Alert archive / Missouri / Flash Flood Warnings in 2021

Flash Flood Warning 48, NWS Paducah, KY

August 10, 2021Carter County, Missouri

NWS Paducah, KY issued this flash flood warning at Aug 10, 2021, 3:42 AM CDT for Carter County, Missouri. 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
Aug 10, 2021, 3:42 AM CDT (08:42 UTC)
Expired
Aug 10, 2021, 6:45 AM CDT
In force
3 hr
Issued by
NWS Paducah, KY
Area
Storm-based polygon
Flood severity
None

County Carter County, MO

The radar

The Paducah radar (KPAH), 180 km from the middle of the area, began a volume at 08:44 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

Little Rock, AR (KLZK), launched 00:00Z, 8.7 hours before the alert went out and 249 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-pSkew-T log-p diagram, Little Rock, AR at 00:00Z on 2021-08-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2546 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Little Rock, AR at 00:00Z on 2021-08-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 7 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
2546 J/kg
Mixed-layer CIN
-40 J/kg
Mixed-layer LCL
1520 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
7 m²/s²
0-3 km storm-relative helicity
65 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

876 
WGUS53 KPAH 100842
FFWPAH
MOC035-101145-
/O.NEW.KPAH.FF.W.0048.210810T0842Z-210810T1145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Paducah KY
342 AM CDT Tue Aug 10 2021

The National Weather Service in Paducah has issued a

* Flash Flood Warning for...
  Eastern Carter County in southeastern Missouri...

* Until 645 AM CDT.

* At 342 AM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1 and 2 inches of rain 
  have fallen. Additional rainfall amounts up to 1 inch are possible 
  in the warned area. Flash flooding is ongoing or expected to begin 
  shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar.

  IMPACT...Flash flooding of small creeks and streams, urban
           areas, highways, streets and underpasses as well as
           other poor drainage and low-lying areas.

* Some locations that will experience flash flooding include...
  Van Buren, Ellsinore, Hunter and Grandin.

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.

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.

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.

Please report observed flooding to local emergency services or law 
enforcement and request they pass this information to the National 
Weather Service when you can do so safely.

&&

LAT...LON 3682 9067 3683 9098 3709 9106 3709 9096
      3705 9096 3705 9073 3700 9073 3700 9072
      3697 9071 3697 9070 3693 9070 3693 9068

FLASH FLOOD...RADAR INDICATED

$$

DRS
2 follow-up statements
169 
WGUS73 KPAH 101024
FFSPAH

Flash Flood Statement
National Weather Service Paducah KY
524 AM CDT Tue Aug 10 2021

MOC035-101145-
/O.CON.KPAH.FF.W.0048.000000T0000Z-210810T1145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Carter MO-
524 AM CDT Tue Aug 10 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 645 AM CDT THIS 
MORNING FOR EASTERN CARTER COUNTY...

At 524 AM CDT, Doppler radar indicated that thunderstorms with heavy 
rainfall have ended. The earlier storms produced between 1 and 2.5 
inches of rain, and it may take another hour or two for any flood 
waters to completely recede.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Radar.

IMPACT...Flash flooding of small creeks and streams, urban areas,
         highways, streets and underpasses as well as other poor
         drainage and low-lying areas.

Some locations that will experience flash flooding include...
  Van Buren, Ellsinore, Hunter and Grandin.

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.

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.

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.

Please report observed flooding to local emergency services or law 
enforcement and request they pass this information to the National 
Weather Service when you can do so safely.

&&

LAT...LON 3682 9067 3683 9098 3709 9106 3709 9096
      3705 9096 3705 9073 3700 9073 3700 9072
      3697 9071 3697 9070 3693 9070 3693 9068

FLASH FLOOD...RADAR INDICATED

$$

DRS
439 
WGUS73 KPAH 101144
FFSPAH

Flash Flood Statement
National Weather Service Paducah KY
644 AM CDT Tue Aug 10 2021

MOC035-101154-
/O.EXP.KPAH.FF.W.0048.000000T0000Z-210810T1145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Carter MO-
644 AM CDT Tue Aug 10 2021

...FLASH FLOOD WARNING WILL EXPIRE AT 645 AM CDT THIS MORNING FOR 
EASTERN CARTER COUNTY...

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

LAT...LON 3682 9067 3683 9098 3709 9106 3709 9096
      3705 9096 3705 9073 3700 9073 3700 9072
      3697 9071 3697 9070 3693 9070 3693 9068

$$

DRS

The office that day

Everything else NWS Paducah, KY issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 10, 2:49 AM CDTSpecial Weather StatementPAHCarter41 min

Nearby

Flash Flood Warnings in Missouri, 2021Every flash flood warning in 2021

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.