Alert archive / Arkansas / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 464, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Oct 16, 1998, 9:15 PM CDT for Benton County, Arkansas. It was in force for 45 min. 1 report came from inside the area while it was in force.
The area
The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties, with what was reported inside it.
The facts
- Issued
- Oct 16, 1998, 9:15 PM CDT (02:15 UTC)
- Expired
- Oct 16, 1998, 10:00 PM CDT
- In force
- 45 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Benton County, AR
The radar
The Springfield radar (KSGF), 107 km from the middle of the area, began a volume at 02:16 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Oct 16, 9:20 PM CDT | Thunderstorm Wind | Cave Spgs, AR | A large tree was blown down. |
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.
The nearest sounding before it
Springfield, MO (KSGF), launched 00:00Z, 2.3 hours before the alert went out and 57 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
- 204 J/kg
- Mixed-layer CIN
- -34 J/kg
- Mixed-layer LCL
- 742 m above ground
- 0-6 km bulk shear
- 56 kt
- 0-1 km storm-relative helicity
- 231 m²/s²
- 0-3 km storm-relative helicity
- 220 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 2.7
The text
As transmitted, in the capitals the NWS used until 2016.
487
WUUS54 KTSA 170216 RRA
SVRTUL
ARC007-170300-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
915 PM CDT FRI OCT 16 1998
THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR
EASTERN BENTON COUNTY IN NORTHWEST ARKANSAS
* UNTIL 1000 PM CDT
* AT 915 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM 4 MILES
SOUTHEAST OF HEALING SPRINGS...MOVING NORTHEAST AT 45 MILES PER
HOUR.
* SOME LOCATIONS AFFECTED INCLUDE... GARFIELD...AVOCA...CAVE
SPRINGS...HEALING SPRINGS...GATEWAY...PEA RIDGE...LOWELL...ROGERS
AND BENTONVILLE
HAIL TO THE SIZE OF QUARTERS AND WIND GUSTS TO 70 MPH CAN BE
EXPECTED IN THE WARNED AREA.
THIS IS A DANGEROUS STORM. IF YOU ARE NEAR ITS PATH YOU SHOULD
PREPARE FOR VERY LARGE HAIL AND STRONG DAMAGING STRAIGHT LINE WINDS.
SEEK SHELTER IN A STURDY BUILDING AND STAY AWAY FROM WINDOWS
LAT...LON 3625 9435 3614 9417 3668 9360 3683 9384What 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.
NWS Tulsa, OK wrote its last area forecast discussion before this severe thunderstorm warning went out at Oct 16, 4:23 PM CDT, 4 hours 52 minutes earlier.
Area forecast discussion, Oct 16, 4:23 PM CDT, 4 hours 52 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE TULSA OK 423 PM CDT FRI OCT 16 1998 PROBLEM(S) OF THE DAY: POPS WILL THE CONVECTION BE SCATTERED OR NUMEROUS? NORTH-SOUTH BAND OF SHRA ACROSS CENTRAL OKLA THIS AFTN WILL EXPAND EWD TONIGHT. WILL GO WITH LIKELY POPS IN MOST AREAS AS LOW LVL WARM ADVECTION IN THE INCREASINGLY MOIST AIRMASS SHOULD LEAD TO WIDESPREAD ACTIVITY IN MOST AREAS. MODELS AGREE ON LIFTING MAIN SHORTWAVE ENERGY RAPIDLY NEWD ACROSS MO AND IA SAT NITE. RAIN CHANCES TO CONTINUE IN LIKELY CATEGORY DURING THE DAY SATURDAY AS COLD FRONT APPROACHES FROM NW. CUD BE A FEW STRONG STORMS IN THE HIGHLY SHEARED ENVIRONMENT...BUT LIMITED INSTBY WITH WIDESPREAD SHRA SHOULD LIMIT EXTENT OF SEVERE THREAT THIS FAR SOUTH. FRONT TO MOVE THROUGH MOST OF FCST AREA SATURDAY NIGHT...EXITING SOUTHEAST CORNER OF OKLAHOMA SUNDAY MORNING. MUCH DRIER AIR BEHIND BOUNDARY AND SUBSIDENCE BEHIND EXITING UPPER SYSTEM SHOULD LEAD TO DECREASING RAIN CHANCES AND PERHAPS CLEARING SKIES FROM NORTH TO SOUTH LATE SAT NITE OR SUN. MOISTURE WILL REMAIN ACROSS RED RIVER AREA THROUGH SUNDAY THOUGH...AND WILL CONTINUE WITH CHC POPS THAT AREA. IN EXTDD...RAIN CHANCES TO RETURN AREAWIDE ON MONDAY AND TUESDAY. WEDNESDAY SHOULD BE DRY AND COOLER BEHIND NEXT COOL SURGE PROGD TO MOVE ACROSS PLAINS. FCSTID = 9 TUL 66 75 49 64 / 70 70 40 10 FSM 65 77 58 69 / 60 80 60 30 MLC 70 76 55 68 / 70 70 60 20 BVO 65 75 47 63 / 70 70 40 10 FYV 66 74 53 65 / 70 80 60 10 IDB 69 78 64 72 / 40 50 60 40 BYV 65 74 51 64 / 70 80 60 10 MIO 66 74 50 64 / 70 80 50 10 MKO 66 75 50 65 / 70 70 40 10 F10 68 76 52 66 / 70 70 40 10 HHW 68 77 62 72 / 50 50 60 40 .TUL... OK...NONE. AR...NONE. -------------------- EXPERIMENTAL OUTPUT: GENERAL WEATHER EXPECTED NEXT 24 HOURS: CONVECTIVE PRECIP HAZARDOUS WEATHER EXPECTED NEXT 24 HOURS: NONE NGM CONFIDENCE: 7 ON A SCALE OF 0 TO 10 ETA CONFIDENCE: 7 ON A SCALE OF 0 TO 10 AVN CONFIDENCE: 7 ON A SCALE OF 0 TO 10 FCST CONFIDENCE: 8 ON A SCALE OF 0 TO 10
In the hours before
Local storm report, Oct 16, 9:09 PM CDT, 6 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
909 PM CDT FRI OCT 16 1998
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0820 PM STILWELL OK .75 INCH HAIL
10/16/98 ADAIR REPORTED BY STILWELL PDNearby
Severe Thunderstorm Warnings in Arkansas, 1998Every severe thunderstorm warning in 1998
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; radar from the NEXRAD Level II archive.