Alert archive / North Carolina / Flash Flood Warnings in 2021

Flash Flood Warning 3, NWS Newport/Morehead City, NC

August 3, 20214 counties in North Carolina

NWS Newport/Morehead City, NC issued this flash flood warning at Aug 3, 2021, 8:23 PM EDT for 4 counties in North Carolina. It was in force for 9 hr. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Aug 3, 2021, 8:23 PM EDT (00:23 UTC)
Expired
Aug 4, 2021, 5:15 AM EDT
In force
9 hr
Issued by
NWS Newport/Morehead City, NC
Area
Storm-based polygon
Flood severity
None

Counties Carteret County, NC, Craven County, NC, Jones County, NC, Onslow County, NC

The radar

The Morehead City radar (KMHX), 18 km from the middle of the area, began a volume at 00:24 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.

What was reported inside it

TimeReportWhereRemark
Aug 3, 10:00 PM EDTFLOOD4 Se Cypress Creek, NCSOME WATER ON BURGAW HWY (NC 53) NEAR THE COUNTY LINE. THE ROAD WAS STILL PASSABLE.
Aug 3, 10:15 PM EDTFLOOD3 Ne Wildwood, NCCORRECTS PREVIOUS FLOOD REPORT FROM 3 NE WILDWOOD. WATER COVERING THE ROAD IN SEVERAL SPOTS ALONG MILL CREEK RD. THE ROAD WAS STILL PASSABLE.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Newport, NC (KMHX), launched 00:00Z, 0.4 hours before the alert went out and 17 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, Newport, NC at 00:00Z on 2021-08-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 162 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, Newport, NC at 00:00Z on 2021-08-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 136 square meters per square second.193958Sfc1 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
162 J/kg
Mixed-layer CIN
-30 J/kg
Mixed-layer LCL
481 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
136 m²/s²
0-3 km storm-relative helicity
228 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.3

Open this sounding in Storm Lab

The text

As transmitted.

255 
WGUS52 KMHX 040023
FFWMHX
NCC031-049-103-133-040415-
/O.NEW.KMHX.FF.W.0003.210804T0023Z-210804T0415Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Newport/Morehead City NC
823 PM EDT Tue Aug 3 2021

The National Weather Service in Newport/Morehead City has issued a

* Flash Flood Warning for...
  Carteret County in eastern North Carolina...
  Southeastern Craven County in eastern North Carolina...
  Southeastern Jones County in eastern North Carolina...
  Onslow County in eastern North Carolina...

* Until 1215 AM EDT.

* At 823 PM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 3 and 6 inches of rain 
  have fallen. Additional rainfall amounts of 2 to 5 inches 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...
  Jacksonville, New Bern, Havelock, Morehead City, North Topsail 
  Beach, Newport, Harkers Island, Cedar Island, James City, Piney 
  Green, Pumpkin Center, Camp Lejeune Center, New River Station, 
  Half Moon, Stella, Swansboro, Hubert, South River, Cape Carteret 
  and North River.

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.

Be aware of your surroundings and do not drive on flooded roads.

&&

LAT...LON 3484 7767 3491 7756 3507 7711 3508 7693
      3504 7694 3507 7692 3503 7693 3503 7687
      3496 7680 3510 7655 3511 7645 3497 7609
      3456 7656 3467 7675 3462 7706 3442 7750
      3448 7758 3473 7769

FLASH FLOOD...RADAR INDICATED

$$

SGK
3 follow-up statements
182 
WGUS52 KMHX 040403
FFWMHX
NCC031-049-103-133-040615-
/O.EXT.KMHX.FF.W.0003.000000T0000Z-210804T0615Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Newport/Morehead City NC
1203 AM EDT Wed Aug 4 2021

The National Weather Service in Newport/Morehead City has extended 
the

* Flash Flood Warning for...
  Carteret County in eastern North Carolina...
  Southeastern Craven County in eastern North Carolina...
  Southeastern Jones County in eastern North Carolina...
  Onslow County in eastern North Carolina...

* Until 215 AM EDT.

* At 1203 AM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 4 and 7 inches of rain 
  have fallen. Additional rainfall amounts of 2 to 5 inches 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...
  Jacksonville, New Bern, Havelock, Morehead City, North Topsail 
  Beach, Newport, Harkers Island, Cedar Island, James City, Piney 
  Green, Pumpkin Center, Camp Lejeune Center, New River Station, 
  Half Moon, Stella, Swansboro, Hubert, South River, Cape Carteret 
  and North River.

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.

Be aware of your surroundings and do not drive on flooded roads.

&&

LAT...LON 3484 7767 3491 7756 3507 7711 3508 7693
      3504 7694 3507 7692 3503 7693 3503 7687
      3496 7680 3510 7655 3511 7645 3497 7609
      3456 7656 3467 7675 3462 7706 3442 7750
      3448 7758 3473 7769

FLASH FLOOD...RADAR INDICATED

$$

8
668 
WGUS72 KMHX 040603
FFSMHX

Flash Flood Statement
National Weather Service Newport/Morehead City NC
203 AM EDT Wed Aug 4 2021

NCC103-040613-
/O.CAN.KMHX.FF.W.0003.000000T0000Z-210804T0615Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Jones NC-
203 AM EDT Wed Aug 4 2021

...FLASH FLOOD WARNING IS CANCELLED FOR SOUTHEASTERN JONES COUNTY...

Flooding is no longer expected to pose a threat. Please continue to 
heed remaining road closures.

A Flash Flood Watch remains in effect until 800 PM EDT Thursday for 
a portion of eastern North Carolina.

LAT...LON 3456 7730 3471 7729 3479 7718 3480 7709
      3483 7705 3485 7696 3497 7690 3495 7680
      3506 7662 3507 7656 3510 7655 3511 7645
      3497 7609 3456 7656 3467 7675 3462 7706
      3453 7730

$$

NCC031-049-133-040615-
/O.CON.KMHX.FF.W.0003.000000T0000Z-210804T0615Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Carteret NC-Craven NC-Onslow NC-
203 AM EDT Wed Aug 4 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 215 AM EDT EARLY THIS 
MORNING FOR CARTERET, SOUTHEASTERN CRAVEN AND SOUTHEASTERN ONSLOW 
COUNTIES...

At 203 AM EDT, Doppler radar indicated thunderstorms producing heavy 
rain across the warned area. Between 4 and 7 inches of rain have 
fallen. Additional rainfall amounts of 2 to 5 inches 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...
  Havelock, Morehead City, Newport, Harkers Island, Cedar Island, 
  Stella, Swansboro, South River, Hubert, Cape Carteret, North 
  River, Merrimon, Straits, Smyrna, Marshallberg, Davis, Sealevel, 
  Atlantic, Pine Knoll Shores and Harlowe.

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.

Be aware of your surroundings and do not drive on flooded roads.

&&

LAT...LON 3456 7730 3471 7729 3479 7718 3480 7709
      3483 7705 3485 7696 3497 7690 3495 7680
      3506 7662 3507 7656 3510 7655 3511 7645
      3497 7609 3456 7656 3467 7675 3462 7706
      3453 7730

FLASH FLOOD...RADAR INDICATED

$$

SGK
810 
WGUS52 KMHX 040608
FFWMHX
NCC031-049-133-040915-
/O.EXT.KMHX.FF.W.0003.000000T0000Z-210804T0915Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Newport/Morehead City NC
208 AM EDT Wed Aug 4 2021

The National Weather Service in Newport/Morehead City has extended 
the

* Flash Flood Warning for...
  Carteret County in eastern North Carolina...
  Southeastern Craven County in eastern North Carolina...
  Southeastern Onslow County in eastern North Carolina...

* Until 515 AM EDT.

* At 208 AM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 5 and 8 inches of rain 
  have fallen. Additional rainfall amounts of 2 to 4 inches 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...
  Havelock, Morehead City, Newport, Harkers Island, Cedar Island, 
  Stella, Swansboro, South River, Hubert, Cape Carteret, North 
  River, Merrimon, Straits, Smyrna, Marshallberg, Davis, Sealevel, 
  Atlantic, Pine Knoll Shores and Harlowe.

Additionally, above normal water levels in tidal creeks and rivers 
may exacerbate freshwater flooding in portions of Down East Carteret 
County, where approximately 5 to 8 inches of rain have fallen since 
last evening.

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.

Be aware of your surroundings and do not drive on flooded roads.

&&

LAT...LON 3456 7730 3471 7729 3479 7718 3480 7709
      3483 7705 3485 7696 3497 7690 3495 7680
      3506 7662 3507 7656 3510 7655 3511 7645
      3497 7609 3456 7656 3467 7675 3462 7706
      3453 7730

FLASH FLOOD...RADAR INDICATED

$$

SGK

The office that day

Everything else NWS Newport/Morehead City, NC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 3, 8:46 PM EDTBeach Hazards StatementMHXCarteret, Dare, Hyde, Onslow23 hr
Aug 3, 11:07 PM EDTSpecial Marine WarningMHX38 min
Aug 4, 7:04 AM EDTFlash Flood WarningMHXDare, Hyde3 hr
Aug 4, 7:13 AM EDTFlash Flood WarningMHXCarteret, Craven, Jones, Onslow3 hr
Aug 4, 9:20 AM EDTSpecial Weather StatementMHXDare25 min
Aug 4, 10:08 AM EDTAreal Flood AdvisoryMHXCarteret, Craven, Jones, Onslow3 hr
Aug 4, 10:14 AM EDTAreal Flood AdvisoryMHXDare, Hyde3 hr
Aug 4, 2:04 PM EDTAreal Flood AdvisoryMHXDare, Hyde3 hr

Nearby

Flash Flood Warnings in North Carolina, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.