Alert archive / North Carolina / Flash Flood Warnings in 2021

Flash Flood Warning 26, NWS Raleigh, NC

October 9, 2021Johnston County, Wayne County, North Carolina

NWS Raleigh, NC issued this flash flood warning at Oct 9, 2021, 9:17 AM EDT for Johnston County, Wayne County, North Carolina. It was in force for 3 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: Oct 9, 2021, 9:17 AM EDT (13:17 UTC)
Expired: Oct 9, 2021, 12:20 PM EDT
In force: 3 hr
Issued by: NWS Raleigh, NC
Area: Storm-based polygon
Damage threat: Considerable
Flood severity: None

Counties Johnston County, NC, Wayne County, NC

The radar

The Raleigh/Durham radar (KRAX), 39 km from the middle of the area, began a volume at 13:19 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

Time	Report	Where	Remark
Oct 9, 9:41 AM EDT	FLASH FLOOD	1 W Princeton, NC	JOHNSTON COUNTY 911 RECEIVED REQUEST FOR HIGH WATER SIGNS DUE TO FLOODING ACROSS HOLTS POND RD NEAR PRINCETON ELEMENTARY SCHOOL IN PRINCETON.
Oct 9, 10:30 AM EDT	FLASH FLOOD	2 Sw Princeton, NC	SEVERAL ROADS ARE IMPASSABLE IN THE TOWN OF PRINCETON, INCLUDING PORTIONS OF PROGRESSIVE CHURCH RD, MASSEY-HOLT RD, AND HOLTS POND RD.

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 12:00Z, 1.3 hours before the alert went out and 141 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: 951 J/kg
Mixed-layer CIN: -21 J/kg
Mixed-layer LCL: 710 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 54 m²/s²
0-3 km storm-relative helicity: 89 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

111 
WGUS52 KRAH 091317
FFWRAH
NCC101-191-091630-
/O.NEW.KRAH.FF.W.0026.211009T1317Z-211009T1630Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Raleigh NC
917 AM EDT Sat Oct 9 2021

The National Weather Service in Raleigh has issued a

* Flash Flood Warning for...
  Southeastern Johnston County in central North Carolina...
  Western Wayne County in central North Carolina...

* Until 1230 PM EDT.

* At 917 AM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 2 and 4 inches of rain 
  have fallen. Additional rainfall amounts up to 2 inches are 
  possible in the warned area. Flash flooding is ongoing or expected 
  to begin shortly.

  HAZARD...Life threatening flash flooding. Thunderstorms
           producing flash flooding.

  SOURCE...Radar.

  IMPACT...Life threatening flash flooding of creeks and streams,
           urban areas, highways, streets and underpasses.

* Some locations that will experience flash flooding include...
  Goldsboro, Smithfield, Micro, Selma, Four Oaks, Pine Level, Kenly, 
  Princeton, Grantham, Nahunta and Mar-Mac.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

Move to higher ground now. Act quickly to protect your life.

&&

LAT...LON 3527 7838 3535 7847 3545 7845 3554 7835
      3560 7815 3556 7803 3548 7799 3536 7802
      3525 7815 3524 7826 3525 7827 3529 7830
      3528 7833 3527 7836

FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE

$$

28

4 follow-up statements

586 
WGUS72 KRAH 091345
FFSRAH

Flash Flood Statement
National Weather Service Raleigh NC
945 AM EDT Sat Oct 9 2021

NCC101-191-091630-
/O.CON.KRAH.FF.W.0026.000000T0000Z-211009T1630Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Johnston NC-Wayne NC-
945 AM EDT Sat Oct 9 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1230 PM EDT THIS 
AFTERNOON FOR SOUTHEASTERN JOHNSTON AND WESTERN WAYNE COUNTIES...

At 945 AM EDT, Johnston County Emergency management reports flooding 
across Holts Pond Rd near Princeton Elementary School. Between 2 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...Life threatening flash flooding. Thunderstorms producing
         flash flooding.

SOURCE...Emergency management reported.

IMPACT...Life threatening flash flooding of creeks and streams,
         urban areas, highways, streets and underpasses.

Some locations that will experience flash flooding include...
  Goldsboro, Smithfield, Micro, Selma, Four Oaks, Pine Level, Kenly, 
  Princeton, Grantham, Nahunta and Mar-Mac.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

Move to higher ground now. Act quickly to protect your life.

&&

LAT...LON 3527 7838 3535 7847 3545 7845 3554 7835
      3560 7815 3556 7803 3548 7799 3536 7802
      3525 7815 3524 7826 3525 7827 3529 7830
      3528 7833 3527 7836

FLASH FLOOD...OBSERVED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE

$$

28

131 
WGUS72 KRAH 091415
FFSRAH

Flash Flood Statement
National Weather Service Raleigh NC
1015 AM EDT Sat Oct 9 2021

NCC101-191-091630-
/O.CON.KRAH.FF.W.0026.000000T0000Z-211009T1630Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Johnston NC-Wayne NC-
1015 AM EDT Sat Oct 9 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1230 PM EDT THIS 
AFTERNOON FOR SOUTHEASTERN JOHNSTON AND WESTERN WAYNE COUNTIES...

At 1015 AM EDT, Johnston County Emergency Managers report continued 
high water in Princeton. Between 2 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...Life threatening flash flooding. Thunderstorms producing
         flash flooding.

SOURCE...Emergency management reported.

IMPACT...Life threatening flash flooding of creeks and streams,
         urban areas, highways, streets and underpasses.

Some locations that will experience flash flooding include...
  Goldsboro, Smithfield, Micro, Selma, Four Oaks, Pine Level, Kenly, 
  Princeton, Grantham, Nahunta and Mar-Mac.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

Move to higher ground now. Act quickly to protect your life.

&&

LAT...LON 3527 7838 3535 7847 3545 7845 3554 7835
      3560 7815 3556 7803 3548 7799 3536 7802
      3525 7815 3524 7826 3525 7827 3529 7830
      3528 7833 3527 7836

FLASH FLOOD...OBSERVED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE

$$

28

430 
WGUS72 KRAH 091437
FFSRAH

Flash Flood Statement
National Weather Service Raleigh NC
1037 AM EDT Sat Oct 9 2021

NCC101-191-091630-
/O.CON.KRAH.FF.W.0026.000000T0000Z-211009T1630Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Johnston NC-Wayne NC-
1037 AM EDT Sat Oct 9 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1230 PM EDT THIS 
AFTERNOON FOR SOUTHEASTERN JOHNSTON AND WESTERN WAYNE COUNTIES...

At 1037 AM EDT, Emergency managers report several roads impassable 
in Princeton, including portions of Progressive Church Rd, 
Massey-Holt Rd, and Holts Pond Rd. Between 2 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...Life threatening flash flooding. Thunderstorms producing
         flash flooding.

SOURCE...Emergency management reported.

IMPACT...Life threatening flash flooding of creeks and streams,
         urban areas, highways, streets and underpasses.

Some locations that will experience flash flooding include...
  Goldsboro, Smithfield, Micro, Selma, Four Oaks, Pine Level, Kenly, 
  Princeton, Grantham, Nahunta and Mar-Mac.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

Move to higher ground now. Act quickly to protect your life.

&&

LAT...LON 3527 7838 3535 7847 3545 7845 3554 7835
      3560 7815 3556 7803 3548 7799 3536 7802
      3525 7815 3524 7826 3525 7827 3529 7830
      3528 7833 3527 7836

FLASH FLOOD...OBSERVED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE

$$

28

831 
WGUS72 KRAH 091620
FFSRAH

Flash Flood Statement
National Weather Service Raleigh NC
1220 PM EDT Sat Oct 9 2021

NCC101-191-091630-
/O.CAN.KRAH.FF.W.0026.000000T0000Z-211009T1630Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Johnston NC-Wayne NC-
1220 PM EDT Sat Oct 9 2021

...FLASH FLOOD WARNING IS CANCELLED FOR SOUTHEASTERN JOHNSTON AND 
WESTERN WAYNE COUNTIES...

Rainfall rates are decreasing, therefore flood waters should 
continue to recede as well. Please continue to heed remaining road 
closures and never drive through flooded areas.

LAT...LON 3527 7838 3535 7847 3545 7845 3554 7835
      3560 7815 3556 7803 3548 7799 3536 7802
      3525 7815 3524 7826 3525 7827 3529 7830
      3528 7833 3527 7836

$$

28

The office that day

Everything else NWS Raleigh, NC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Oct 9, 2:10 AM EDT	Areal Flood Advisory	RAH	Anson, Chatham, Lee, Montgomery, Moore, Randolph and 2 more	3 hr
Oct 9, 3:47 AM EDT	Flash Flood Warning Considerable damage threat	RAH	Anson, Chatham, Montgomery, Moore, Richmond	2 hr
Oct 9, 4:34 AM EDT	Areal Flood Advisory	RAH	Chatham, Durham, Lee, Moore, Wake	3 hr
Oct 9, 5:44 AM EDT	Flash Flood Warning Considerable damage threat	RAH	Wake	8 hr
Oct 9, 8:15 AM EDT	Areal Flood Advisory	RAH	Edgecombe, Nash, Wilson	3 hr
Oct 9, 8:24 AM EDT	Areal Flood Advisory	RAH	Edgecombe, Halifax, Nash	3 hr
Oct 9, 8:46 AM EDT	Areal Flood Advisory	RAH	Cumberland, Harnett, Johnston, Sampson, Wayne	4 hr
Oct 9, 11:12 AM EDT	Areal Flood Advisory	RAH	Johnston, Nash, Wilson	106 min
Oct 9, 12:56 PM EDT	Flash Flood Warning Considerable damage threat	RAH	Johnston, Nash, Wayne, Wilson	2 hr
Oct 9, 1:45 PM EDT	Areal Flood Advisory	RAH	Wake	3 hr
Oct 9, 5:32 PM EDT	Areal Flood Advisory	RAH	Wake	6 hr

Nearby

Flash Flood Warnings in North Carolina, 2021 Every 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.