Alert archive / North Carolina / Severe Thunderstorm Warnings in 1989

Severe Thunderstorm Warning 29, NWS Raleigh, NC

April 25, 1989Orange County, North Carolina

NWS Raleigh, NC issued this severe thunderstorm warning at Apr 25, 1989, 6:55 PM EDT for Orange County, North Carolina. It was in force for 35 min.

The area

The counties it named.

The facts

Issued: Apr 25, 1989, 6:55 PM EDT (22:55 UTC)
Expired: Apr 25, 1989, 7:30 PM EDT
In force: 35 min
Issued by: NWS Raleigh, NC
Area: Whole counties

County 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, 10.9 hours before the alert went out and 70 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: 1580 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 46 m²/s²
0-3 km storm-relative helicity: 85 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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 25, 5:56 PM EDT, 59 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RALEIGH/DURHAM, NC
 555 PM EDT TUE APR 25 1989

AT 550 THIS EVENING A STRONG THUNDERSTORM WAS MOVING SOUTHEAST
AT ABOUT 40 MPH THROUGH GRANVILLE COUNTY AND JUST ENTERNING
NORTHERN WAKE COUNTY. THE STRONGEST PART OF THE STORM WILL LIKELY
PASS OVER WAKE FOREST AND SOUTHERN FRANKLIN COUNTY MOVING TOWARD
ZEBULON.

THERE IS A GOOD CHANCE THIS STORM WILL PRODUCE STRONG WINDS AND SOME
SMALL HAIL.

LIS`TEN TO LOCAL RADIO..TV..OR WEATHER RADIO FOR LATER STATEMENTS OR
POSSIBLE WARNINGS.

DMD

Special weather statement, Apr 25, 5:57 PM EDT, 58 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENSBORO NC
555 PM EDT TUE APR 25 1989

...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 1000 PM FOR EASTERN
   PARTS OF THE NORTHWEST PIEDMONT OF NORTH CAROLINA...

AT 550 PM EDT RADAR SHOWED AN ISOLATED SMALL SHOWER OVER CASWELL
COUNTY.  THIS IS THE ONLY PRECIPITATION BEING DETECTED OVER THE
NORTHWEST PIEDMONT.  FURTHER TO THE EAST SOME SEVERE THUNDERSTORMS
HAVE BEEN DETECTED IN THE NORTHEAST PIEDMONT OF NORTH CAROLINA.
WARNINGS HAVE BEEN ISSUED FOR THESE STORMS BY THE FORECAST OFFICE
IN RALEIGH.

THERE REMAINS A SMALL CHANCE THAT SHOWERS AND THUNDERSTOMRS COULD
DEVELOP OVER THE NORTHWEST PIEDMONT OF NORTH CAROLINA TONIGHT AND
IF THEY DID A FEW COULD BECOME SEVERE THIS EVENING.  PERSONS SHOULD
REMAIN ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS AND
SHOULD QUICKLY SEEK SHELTER IF STORMS ARE SPOTTED.

LISTEN TO NOAA WEATHER RADIO OR LOCAL RADIO AND TELEVISION FOR LATER
STATEMENaTS AND POSSIBLE WARNINGS.

RBN

Local storm report, Apr 25, 6:15 PM EDT, 40 minutes before

STORM REPORT
NATIONAL WEATHER SERVICE RALEIGH/DURHAM, NC
613 PM EDT TUE APR 25 1989

TIME           EVENT
 610 PM EDT    5 MILES NORTH OF RALEIGH ON U.S. 1 IN WAKE COUNTY...
     4 OR 5 TREES DOWN.

JBP n

Special weather statement, Apr 25, 6:35 PM EDT, 20 minutes before

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Local storm report, Apr 25, 6:43 PM EDT, 12 minutes before

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Local storm report, Apr 25, 6:45 PM EDT, 10 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 25, 4:59 PM EDT	Severe Thunderstorm Warning	RAH	Person	46 min
Apr 25, 5:12 PM EDT	Severe Thunderstorm Warning	RAH	Granville	48 min
Apr 25, 5:59 PM EDT	Severe Thunderstorm Warning	RAH	Wake	31 min
Apr 25, 6:16 PM EDT	Severe Thunderstorm Warning	RAH	Franklin	29 min
Apr 25, 6:28 PM EDT	Tornado Warning	RAH	Wake	32 min
Apr 25, 6:30 PM EDT	Tornado Warning	RAH	Franklin, Johnston	45 min
Apr 25, 7:02 PM EDT	Severe Thunderstorm Warning	RAH	Wayne	43 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 1989 Every severe thunderstorm warning in 1989

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.