Alert archive / Arkansas / Severe Thunderstorm Warnings in 1987

Severe Thunderstorm Warning 73, NWS Tulsa, OK

August 16, 1987Benton County, Madison County, Washington County, Arkansas

NWS Tulsa, OK issued this severe thunderstorm warning at Aug 16, 1987, 9:28 PM CDT for Benton County, Madison County, Washington County, Arkansas. It was in force for 62 min.

The area

The counties it named.

The facts

Issued: Aug 16, 1987, 9:28 PM CDT (02:28 UTC)
Expired: Aug 16, 1987, 10:30 PM CDT
In force: 62 min
Issued by: NWS Tulsa, OK
Area: Whole counties

Counties Benton County, AR, Madison County, AR, Washington County, AR

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

Springfield, MO (KUMN), launched 00:00Z, 2.5 hours before the alert went out and 91 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: 1524 J/kg
Mixed-layer CIN: -21 J/kg
Mixed-layer LCL: 1857 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 75 m²/s²
0-3 km storm-relative helicity: 105 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.1

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KFSM 170228
SVRFSM
ARC007-087-143-170330-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE FORT SMITH AR
928 PM CDT SUN AUG 16 1987
 
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING
EFFECTIVE UNTIL 1030 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES...
 
IN WEST ARKANSAS
          ...BENTON...MADISON...WASHINGTON
 
AT 920 FORT SMITH RADAR INDICATED A LINE OF STRONG THUNDERSTORMS
MOVING THROUGH BENTON COUNTY IN NORTHWEST ARKANSAS AT 30 MPH.  VERY
HEAVY RAIN AND STRONG GUSTY WINDS HAS BEEN REPORTED WITH THIS LINE OF
THUNDERSTORMS.
 
WHEN THUNDERSTORMS ARE OCCURRING...PEOPLE SHOULD MOVE INSIDE A
STRONG BUILDING.  DO NOT STAND BY WIMNDOWS.  DON'T USE TELEPHONES
OR ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY UNTIL THE STORM
HAS PASSED.  MOTORISTS SHOULD NOT DRIVE INTO LOW WATER CROSSINGS.

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

Local storm report, Aug 16, 8:31 PM CDT, 57 minutes before

STORM REPORT
NATIONAL WEATHER SERVICE TULSA, OK
828 PM CDT SUN AUG 16 1987

 TIME/CDT COUNTY      EVENT  (CD=CIVIL DEFENSE  OHP=OK HIGHWAY PAT'L)
 735  PM  TULSA       POLICE STRONG WINDS OF 45 TO 50 MPH NEAR
                      JENKS OK.  NO REPORTS OF DAMAGE.  HEAVY RAINS.
 745  PM  TULSA       BIXBY POLICE REPORT SEVERAL POWER LINES DOWN
                      FROM HIGH WINDS AND VERY HEAVY RAINFALL.
 745 PM   WAGONER     COWETA PD REPORTS SMALL HAIL AND SOME WIND
                      DAMAGE REPORTED TO POWER POLES WEST OF TOWN.

The office that day

Everything else NWS Tulsa, OK issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 16, 10:23 PM CDT	Severe Thunderstorm Warning	TSA	Crawford, Franklin, Madison, Washington	67 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 1987 Every 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; the sounding from the Mesonet's radiosonde archive.