Alert archive / North Carolina / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 2, NWS Raleigh, NC
NWS Raleigh, NC issued this severe thunderstorm warning at Apr 12, 1987, 7:21 PM EDT for Wake County, North Carolina. It was in force for 49 min. 2 reports 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
- Apr 12, 1987, 7:21 PM EDT (23:21 UTC)
- Expired
- Apr 12, 1987, 8:10 PM EDT
- In force
- 49 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 |
|---|---|---|---|
| Apr 12, 7:30 PM EDT | Thunderstorm Wind 0 | Wake, NC | |
| Apr 12, 7:45 PM EDT | Thunderstorm Wind 0 | 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, 11.4 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2322 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 126 m²/s²
- 0-3 km storm-relative helicity
- 107 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 122321 SVRRDU NCC183-130010- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE RALEIGH NC 721 PM EDT SUN APR 12 1987 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 810 PM EDT FOR THE FOLLOWING COUNTY OF NORTH CAROLINA... NORTHERN WAKE AT 715 PM THUNDERSTORM WINDS GUSTING TO 56 MPH OCCURRED AT THE RALEIGH-DURHAM AIRPORT. THE THUNDERSTORM THAT PRODUCED THESE WINDzS WILL PASS OVER NORTHERN WAKE COUNTY IN THE NEXT HALF HOUR. PEOPLE IN THE PATH OF THIS STORM SHOULD BE ALERT FOR LARGE HAIL... DAMAGING WINDS...FREQUENT LIGHTNING AND LOCALLY HEAVY RAIN. DMD
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, Apr 12, 5:48 PM EDT, 1 hour 33 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENSBORO NC
547PM EDT SUN APR 12 1987
AT 540 PM EDT NATIONAL WEATHER SERVICE RADAR SHOWED A HEAVY
THUNDERSTORM IN SOUTHWEST ROCKINGHAM COUNTY NORTH CAROLINA.
THIS STORM IS CAPABLE OF PRODUCING STRONG GUSTY WINDS...LOCALLY
HEAVY DOWNPOURS...DANGEROUS LIGHTNING AND POSSIBLE HAIL.
MOVEMENT OF THIS STORM IS TO THE EAST AT ABOUT 30 MILES AN HOUR.
4The office that day
Everything else NWS Raleigh, NC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 12, 6:22 PM EDT | Severe Thunderstorm Warning | RAH | Orange | 48 min |
Nearby
Severe Thunderstorm Warnings in North Carolina, 1987Every severe thunderstorm warning in 1987
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.