Alert archive / North Carolina / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 80, NWS Raleigh, NC
NWS Raleigh, NC issued this severe thunderstorm warning at Aug 29, 1990, 4:29 PM EDT for Wake County, North Carolina. It was in force for 31 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Aug 29, 1990, 4:29 PM EDT (20:29 UTC)
- Expired
- Aug 29, 1990, 5:00 PM EDT
- In force
- 31 min
- Issued by
- NWS Raleigh, NC
- Area
- Whole counties
County Wake County, NC
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 29, 4:35 PM EDT | Hail 0.75 | Wake, NC |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 8.5 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.
- Mixed-layer CAPE
- 436 J/kg
- Mixed-layer CIN
- -160 J/kg
- Mixed-layer LCL
- 1776 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 21 m²/s²
- 0-3 km storm-relative helicity
- 48 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KRDU 292031 SVRRDU NCC183-292100- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE RALEIGH/DURHAM NC 429 PM EDT WED AUG 29 1990 THE NATIONAL WEATHER SERVICE IN RALEIGH/DURHAM HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 500 PM EDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN NORTH CENTRAL NORTH CAROLINA ...WAKE COUNTY AT 430 PM DIME SIZE HAIL WAS REPORTED IN THE TOWN OF CARY. RADAR INDICATED THIS SEVERE THUNDERSTORM WAS MOVING EAST AT 25 MPH. PEOPLE IN THE PATH OF THIS STORM SHOULD BE ALERT FOR LARGE HAIL AND DAMAGING WINDS. FREQUENT LIGHTNING AND LOCALLY HEAVY RAIN CAN OCCUR WITH ANY THUNDERSTORM.
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, Aug 29, 1:30 PM EDT, 2 hours 59 minutes before
NCZ-006-007-009-292200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREENSBORO NC 130 PM EDT WED AUG 29 1990 ...THUNDERSTORMS WITH VERY HEAVY RAIN HAS DEVELOPED IN THE NORTHWEST PIEDMONT OF NORTH CAROLINA... WEATHER SERVICE RADAR SHOWS A THUNDERSTORM WITH VERY HEAVY RAIN IN STOKES COUNTY DUE NORTH OF WINSTON SALEM...FROM WHAT RADAR IS SHOWING THIS STORM COULD POSSIBLE PRODUCE SOME SMALL HAIL. THIS STORM IS MOVING EAST AT ABOUT 20 MPH. OTHER THUNDERSTORMS AND SHOWERS HAVE DEVELOPED IN SURRY COUNTY IN THE NORTHERN FOOTHILLS AND ALLEGHANY COUNTY IN THE NORTHERN MOUNTAINS. STAY TUNED TO NOAA WEATHER RADIO FOR ANY LATER STATEMENTS AND POSSIBLE WARNINGS. RJD
Special weather statement, Aug 29, 3:01 PM EDT, 1 hour 28 minutes before
NCZ005-291920- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE RALEIGH/DURHAM, NC 300 PM EDT WED AUG 29 1990 THUNDERSTORMS WERE DEVELOPING RAPIDLY IN THE NORTHEAST PIEDMONT OF NORTH CAROLINA. AT 300 PM...NATIONAL WEATHER SERVICE RADAR SHOWED THUNDERSTORMS OVER THE NORTHWEST PIEDMONT WERE DEVELOPING EASTWARD TOWARD THE TRIANGLE AREA. A STRONG THUNDERSTORM OVER ALAMANCE AND ORANGE COUNTIES WAS MOVING TO THE EAST AT ABOUT 30 MPH AND WILL AFFECT DURHAM COUNTY BEFORE 330 PM. A THUNDERSTORM OVER SOUTHEAST GUILFORD COUNTY PRODUCED MARBLE SIZE HAIL AT 240 PM. THE ATMOSPHERE OVER CENTRAL AND EASTERN NORTH CAROLINA IS VERY MOIST AND UNSTABLE. THE POTENTIAL FOR STRONG THUNDERSTORMS WILL EXIST FOR THE REMAINDER OF THIS AFTERNOON AND THIS EVENING. PEOPLE IN CENTRAL AND EASTERN PORTIONS OF THE STATE SHOULD BE ALERT FOR RAPIDLY CHANGING WEATHER CONDITIONS. LISTEN TO RADIO...TELEVISION...OR NOAA WEATHER RADIO FOR STATEMENTS AND POSSIBLcY WATCHES OR WARNINGS. LGL
Special weather statement, Aug 29, 3:53 PM EDT, 36 minutes before
NCZALL-292020- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE RALEIGH/DURHAM, NC 352 PM EDT AUG 29 1990 ...SEVERE THUNDERSTORM WATCH NUMBER 704 IS IN EFFECT FOR MUCH OF CENTRAL AND EASTERN NORTH CAROLINA UNTIL 10 PM EDT... AT 350 PM...SHOWERS AND THUNDERSTORMS WERE SCATTERED ACROSS THE TRIANGLE AREA. THEY WERE MOVING TO THE EAST AT ABOUT 25 MPH. WTVD IN DURHAM REPORTED MARBLE SIZE HAIL OCCURRED IN CHAPEL HILL AT 345 PM. LISTEN TO LOCAL RADIO..TV..OR WEATHER RADIO FOR LATER STATEMENTS AND POSSIBLY WARNINGS. LGL
Special weather statement, Aug 29, 4:06 PM EDT, 23 minutes before
NCZALL-292030- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE RALEIGH/DURHAM, NC 405 PM EDT WED AUG 29 1990 SEVERE THUNDERSTORM WATCH NUMBER 704 IS IN EFFECT UNTIL 10 PM FOR MUCH OF CENTRAL AND EASTERN NORTH CAROLINA. AT 405 PM...NATIONAL WEATHER SERVICE RADAR SHOWED A LINE OF SHOWERS AND THUNDERSTORMS EXTENDING FROM EXTREME NORTHERN WAKE COUNTY SOUTHWEST ACROSS DURHAM COUNTY...SOUTHERN ORANGE COUNTY...AND CHATHAM COUNTY. THE SHOWERS AND THUNDERSTORMS WERE MOVING TO THE EAST AT ABOUT 25 MPH. STRONG THUNDERSTORMS WERE OVER SOUTHERN DURHAM COUNTY AND OVER CHATHAM COUNTY. AT 400 PM...MARBLE SIZE HAIL WAS OCCURRING IN NORTHWEST CHATHAM COUNTY NEAR SILER CITY. BOATERS ON FALLS LAKE AND JORDAN LAKE SHOULD BE PREPARED FOR THE POSSIBILITY OF STRONG AND GUSTY WINDS AND HAIL. ^ THUNDERSTORMS WERE DEVELOPING RAPIDLY OVER WARREN COUNTY AT 405 PM. ^ LISTEN TO RADIO...TELEVISION...OR NOAA WEATHER RADIO FOR ADDITIONAL STATEMENTS AND POSSIBLY WARNINGS. LGL
The office that day
Everything else NWS Raleigh, NC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 29, 4:58 PM EDT | Severe Thunderstorm Warning | RAH | Nash | 32 min |
| Aug 29, 5:26 PM EDT | Severe Thunderstorm Warning | RAH | Edgecombe, Wilson | 49 min |
| Aug 29, 5:35 PM EDT | Severe Thunderstorm Warning | RAH | Halifax, Northampton | 40 min |
| Aug 29, 6:14 PM EDT | Severe Thunderstorm Warning | RAH | Northampton | 31 min |
| Aug 29, 7:43 PM EDT | Severe Thunderstorm Warning | RAH | Johnston, Nash | 47 min |
| Aug 29, 7:55 PM EDT | Severe Thunderstorm Warning | RAH | Wilson | 50 min |
Nearby
Severe Thunderstorm Warnings in North Carolina, 1990Every severe thunderstorm warning in 1990
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.