Alert archive / North Carolina / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 74, NWS Raleigh, NC
NWS Raleigh, NC issued this severe thunderstorm warning at Aug 16, 1990, 12:42 PM EDT for Chatham County, Orange County, North Carolina. It was in force for 63 min.
The area
The counties it named.
The facts
- Issued
- Aug 16, 1990, 12:42 PM EDT (16:42 UTC)
- Expired
- Aug 16, 1990, 1:45 PM EDT
- In force
- 63 min
- Issued by
- NWS Raleigh, NC
- Area
- Whole counties
Counties Chatham County, NC, Orange County, NC
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 4.7 hours before the alert went out and 68 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
- 1735 J/kg
- Mixed-layer CIN
- -22 J/kg
- Mixed-layer LCL
- 697 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- -7 m²/s²
- 0-3 km storm-relative helicity
- 52 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 161645 SVRRDU NCC037-135-161745- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE RALEIGH/DURHAM NC 1242 PM EDT THU AUG 16 1990 THE NATIONAL WEATHER SERVICE IN RALEIGH/DURHAM HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 145 PM EDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN NORTH CENTRAL NORTH CAROLINA ...CHATHAM COUNTY...SOUTHWESTERN ORANGE COUNTY AT 1245 PM EDT RADAR SHOWED A CLUSTER OF SEVERE THUNDERSTORMS OVER EASTERN AND SOUTHERN ALAMANCE COUNTIES. THESE THUNDERSTORMS WERE MOVING TO SOUTHEAST INTO SOUTHWEST ORANGE AND NORTHERN CHATHAM COUNTIES AND WILL BE AFFECTING THESE COUNTIES DURING THE NEXT HOUR. 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 16, 11:22 AM EDT, 1 hour 20 minutes before
NCZALL-161800- NCZ003>005-014-015-DDHHMM- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE RALEIGH/DURHAM, NC 1120 AM EDT THU AUG 16 1990 SKYWARN OUTLOOK...THERE IS A SLIGHT CHANCE OF SEVERE THUNDERSTORMS THIS AFTERNOON AND EVENING ACROSS MUCH OF NORTH CAROLINA. SEVERE THUNDERSTORMS HAVE LARGE HAIL AND DAMAGING WINDS. LISTEN TO LOCAL RADIO..TV..OR WEATHER RADIO FOR LATER STATEMENTS OR POSSIBLE WARNINGS. JBP
Special weather statement, Aug 16, 11:22 AM EDT, 1 hour 20 minutes before
NCZALL-161800- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE RALEIGH/DURHAM, NC 1120 AM EDT THU AUG 16 1990 SKYWARN OUTLOOK...THERE IS A SLIGHT CHANCE OF SEVERE THUNDERSTORMS THIS AFTERNOON AND EVENING ACROSS MUCH OF NORTH CAROLINA. SEVERE THUNDERSTORMS HAVE LARGE HAIL AND DAMAGING WINDS. LISTEN TO LOCAL RADIO..TV..OR WEATHER RADIO FOR LATER STATEMENTS OR POSSIBLE WARNINGS. JBP
Special weather statement, Aug 16, 12:12 PM EDT, 30 minutes before
NCZ006-161600- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREENSBORO NC 1205 PM EDT THU AUG 16 1990 AT 1205 PM NATIONAL WEATHER SERVICE RADAR SHOWED THUNDERSTORMS WITH VERY HEAVY RAIN AND POSSIBLE HAIL OVER NORTHEAST GUILFORD COUNTY MOVING EAST SOUTHEAST AT 15 MPH. OTHER THUNDERSTORMS ARE OCURRING OVER THE COUNTIES OF STOKES, FORSYTH, ROCKINGHAM AND ALAMANCE. ALONG WITH THE VERY HEAVY RAIN THIS THUNDERSTORM MAY PRODUCE... ...FREQUENT DEADLY LIGHTNING...GUSTY WINDS, HAIL AND SOME MINOR FLOODING OF STREAMS AND ROADS. IF YOU ARE IN THE PATH OF THIS STORM THEN BE ON THE ALERT FOR THREATENING WEATHER CONDITIONS AND BE PREPARED TO TAKE SAFE SHELTER IF THE STORM APPROACHES. JMS
The office that day
Everything else NWS Raleigh, NC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 15, 10:37 PM EDT | Flash Flood Warning | RAH | Pitt | 3 hr |
| Aug 15, 11:15 PM EDT | Flash Flood Warning | RAH | Greene | 3 hr |
| Aug 16, 1:47 PM EDT | Severe Thunderstorm Warning | RAH | Chatham | 43 min |
| Aug 16, 3:32 PM EDT | Severe Thunderstorm Warning | RAH | Moore | 58 min |
| Aug 16, 4:33 PM EDT | Severe Thunderstorm Warning | RAH | Hoke, Moore, Scotland | 42 min |
| Aug 16, 7:18 PM EDT | Severe Thunderstorm Warning | RAH | Wake | 42 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; the sounding from the Mesonet's radiosonde archive.