Alert archive / North Carolina / Flash Flood Warnings in 2021

Flash Flood Warning 2, NWS Newport/Morehead City, NC

July 27, 2021Greene County, Lenoir County, Pitt County, North Carolina

NWS Newport/Morehead City, NC issued this flash flood warning at Jul 27, 2021, 1:02 AM EDT for Greene County, Lenoir County, Pitt County, North Carolina. It was in force for 118 min. 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
Jul 27, 2021, 1:02 AM EDT (05:02 UTC)
Expired
Jul 27, 2021, 3:00 AM EDT
In force
118 min
Issued by
NWS Newport/Morehead City, NC
Area
Storm-based polygon
Flood severity
None

Counties Greene County, NC, Lenoir County, NC, Pitt County, NC

The radar

The Raleigh/Durham radar (KRAX), 80 km from the middle of the area, began a volume at 05:00 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
Jul 27, 1:10 AM EDTFLASH FLOOD1 Ese Castoria, NCVANDIFORD THOMAS RD CLOSED NEAR TAYLOR RD DUE TO FLOODING. TIME ESTIMATED BY RADAR.
Jul 27, 1:15 AM EDTFLASH FLOOD2 S Castoria, NCMT. HERMAN CHURCH RD CLOSED NEAR NC-91 DUE TO FLOODING. TIME ESTIMATED BY RADAR.

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, 5.0 hours before the alert went out and 104 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 2021-07-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1632 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 2021-07-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 44 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
1632 J/kg
Mixed-layer CIN
-9 J/kg
Mixed-layer LCL
745 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
44 m²/s²
0-3 km storm-relative helicity
77 m²/s²
Significant tornado parameter
0.3
Supercell composite
2.0

Open this sounding in Storm Lab

The text

As transmitted.

088 
WGUS52 KMHX 270502
FFWMHX
NCC079-107-147-270700-
/O.NEW.KMHX.FF.W.0002.210727T0502Z-210727T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Newport/Morehead City NC
102 AM EDT Tue Jul 27 2021

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

* Flash Flood Warning for...
  Central Greene County in eastern North Carolina...
  Northern Lenoir County in eastern North Carolina...
  Southwestern Pitt County in eastern North Carolina...

* Until 300 AM EDT.

* At 102 AM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 3 and 4 inches of rain 
  have fallen. Additional rainfall amounts of 1 to 2 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...
  Grifton, Snow Hill, Maury, Ormondsville, Roundtree, Lizzie, 
  Hookerton, Castoria, Fort Run VFD and Bull Head VFD.

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.

&&

LAT...LON 3559 7780 3555 7761 3553 7751 3547 7743
      3542 7738 3537 7742 3538 7745 3545 7769
      3548 7783 3550 7782 3557 7782

FLASH FLOOD...RADAR INDICATED

$$

5

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 26, 9:35 PM EDTAreal Flood AdvisoryMHXBeaufort115 min
Jul 26, 11:52 PM EDTAreal Flood AdvisoryMHXCraven, Greene, Lenoir, Pitt113 min
Jul 27, 3:55 AM EDTAreal Flood AdvisoryMHXCarteret, Craven, Jones, Onslow2 hr
Jul 27, 4:00 AM EDTAreal Flood AdvisoryMHXDuplin2 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.