Alert archive / North Carolina / Flash Flood Warnings in 2002

Flash Flood Warning 1, NWS Raleigh, NC

March 31, 2002Wake County, North Carolina

NWS Raleigh, NC issued this flash flood warning at Mar 31, 2002, 6:20 PM EST for Wake County, North Carolina. It was in force for 85 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Mar 31, 2002, 6:20 PM EST (23:20 UTC)
Expired: Mar 31, 2002, 7:45 PM EST
In force: 85 min
Issued by: NWS Raleigh, NC
Area: Whole counties

County Wake County, NC

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 11.3 hours before the alert went out and 117 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 472 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 132 m²/s²
0-3 km storm-relative helicity: 230 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WGUS52 KRAH 312320
FFWRAH
NCC183-010045-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE RALEIGH NC
619 PM EST SUN MAR 31 2002

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  WAKE COUNTY IN NORTH CAROLINA

* UNTIL 745 PM EST

* AT 619 PM EST THUNDERSTORMS WITH VERY HEAVY RAIN WERE MOVING 
  OVER WAKE COUNTY. 

* THUNDERSTORMS ARE CONTINUOUSLY REDEVELOPING OVER THE WARNED AREA...
  RESULTING IN EXCESSIVE RAINFALL. 

ABSOLUTELY DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER
COVERS THE ROADWAY. VEHICLES CAUGHT IN RISING WATER SHOULD BE
ABANDONED. MOVE TO HIGHER GROUND.

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 31, 12:45 PM EST	Severe Thunderstorm Warning	RAH	Scotland	45 min
Mar 31, 1:02 PM EST	Severe Thunderstorm Warning	RAH	Cumberland	43 min
Mar 31, 1:58 PM EST	Severe Thunderstorm Warning	RAH	Sampson	17 min
Mar 31, 2:00 PM EST	Severe Thunderstorm Warning	RAH	Cumberland	30 min
Mar 31, 2:26 PM EST	Severe Thunderstorm Warning	RAH	Sampson	34 min
Mar 31, 2:30 PM EST	Severe Thunderstorm Warning	RAH	Johnston, Wayne	30 min
Mar 31, 2:34 PM EST	Tornado Warning	RAH	Sampson	26 min
Mar 31, 2:50 PM EST	Severe Thunderstorm Warning	RAH	Cumberland	25 min
Mar 31, 3:04 PM EST	Severe Thunderstorm Warning	RAH	Sampson	26 min
Mar 31, 3:05 PM EST	Severe Thunderstorm Warning	RAH	Wayne	25 min
Mar 31, 3:13 PM EST	Severe Thunderstorm Warning	RAH	Stanly	62 min
Mar 31, 3:40 PM EST	Severe Thunderstorm Warning	RAH	Montgomery	50 min
Mar 31, 4:08 PM EST	Severe Thunderstorm Warning	RAH	Cumberland	22 min
Mar 31, 4:15 PM EST	Severe Thunderstorm Warning	RAH	Anson	30 min
Mar 31, 4:48 PM EST	Severe Thunderstorm Warning	RAH	Chatham, Lee	27 min
Mar 31, 5:11 PM EST	Severe Thunderstorm Warning	RAH	Wake	49 min

Nearby

Flash Flood Warnings in North Carolina, 2002 Every flash flood warning in 2002

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.