Alert archive / Arkansas / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 59, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Apr 3, 1998, 10:31 AM CST for Carroll County, Arkansas. It was in force for 44 min. 1 report 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 3, 1998, 10:31 AM CST (16:31 UTC)
- Expired
- Apr 3, 1998, 11:15 AM CST
- In force
- 44 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties
County Carroll County, AR
The radar
The Springfield radar (KSGF), 100 km from the middle of the area, began a volume at 16:31 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 |
|---|---|---|---|
| Apr 3, 11:00 AM CST | Hail 0.75 | Osage, AR |
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 12:00Z, 4.5 hours before the alert went out and 66 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
- 31 J/kg
- Mixed-layer CIN
- -126 J/kg
- Mixed-layer LCL
- 868 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 74 m²/s²
- 0-3 km storm-relative helicity
- 80 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 KTUL 031631 RRA SVRTUL ARC015-031715- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TULSA OK 1031 AM CST FRI APR 3 1998 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1115 AM CST FOR PEOPLE IN THE FOLLOWING LOCATION... IN NORTHWESTERN ARKANSAS ...SOUTHEASTERN CARROLL COUNTY AT 1029 AM...NWS RADAR INDICATED A SEVERE THUNDERSTORM JUST SOUTHEAST OF OSAGE MOVING EAST AT 20 MPH. HAIL TO THE SIZE OF DIMES AND WIND GUSTS TO 60 MPH CAN BE EXPECTED IN THE WARNED AREA. WHEN THUNDERSTORMS ARE OCCURRING... PEOPLE SHOULD MOVE INSIDE A STRONG BUILDING. DO NOT STAND BY WINDOWS. DO NOT USE TELEPHONES OR ELECTRICAL APP LIANCES 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.
NWS Tulsa, OK wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 3, 4:25 AM CST, 6 hours 6 minutes earlier.
Area forecast discussion, Apr 3, 4:25 AM CST, 6 hours 6 minutes before
FPUS3 KTUL 031040 AFDTUL EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE TULSA OK 425 AM CST FRI APR 3 1998 THE UPPER LOW OVER NW OK WILL MOVE EWD AND TAKE THE CLDS/PCPN WITH IT. SFC LOW AND H8 LOW WILL TRACK TO ERN AR ARND MIDDAY...CAUSING WINDS TO BECOME STG N AND NW OVER THE FCST AREA. THE COLD ADVECTION WILL BEGIN OVER WRN AND NWRN ZONES THIS MORNING...AND GRDLY SPREAD TO THE EAST. THIS IS A CONCERN FOR THE HIGH TEMPS FOR TDA. MOSTLY CLEAR SKIES THIS MORNING SHD ALLOW SOME WARMING...BUT CLDS AND COOLER AIR WILL ADVANCE AND SHD END ANY WARMUP. HIGHS ARE PRETTY IFFY...AND WENT COOLER THAN GUIDANCE. WITH UPPER LOW MVG OVER THE AREA...AND COLD AIR ALF...XPC A CHANCE OF SHOWERS OVER NRN HALF OF FCST AREA. ANY PCPN WILL ALSO AFFECT TEMPS LATER TODAY. THE ENTIRE SYSTEM MOVES EAST OF THE FCST AREA TNGT...WITH STG NEG VORT ADVECTION. CONSIDERED A SUBSIDENCE ADVISORY...BUT DECIDED NOT. SKIES SHD CLEAR...AND SFC RIDGE WILL MOVE OVER THE AREA. MAY HAVE SOME LOW CLDS OR LIGHT FOG ON SAT MRNG...BUT SHD BURN OFF QUICKLY. FCSTID = 2 TUL 58 39 61 43 / 20 0 0 0 FSM 63 41 61 39 / 20 0 0 0 MLC 64 42 63 42 / 10 0 0 0 BVO 56 37 61 41 / 30 0 0 0 FYV 62 39 59 39 / 30 20 0 0 IDB 68 45 66 45 / 10 0 0 0 BYV 62 38 59 39 / 30 20 0 0 MIO 58 36 59 40 / 30 10 0 0 MKO 60 40 61 41 / 20 0 0 0 F10 62 42 64 42 / 10 0 0 0 HHW 69 44 66 43 / 20 0 0 0 .TUL... OK...CAUTION ON AREA LAKES ZONES 54>76. AR...CAUTION ON AREA LAKES ZONES 1/2/10/11/19/20/29.
In the hours before
Special weather statement, Apr 3, 6:00 AM CST, 4 hours 31 minutes before
ARZ001-002-010-011-019-020-029-OKZ049-053>076-041200- EASTERN OKLAHOMA/NORTHWEST ARKANSAS HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TULSA OK 600 AM CST FRI APR 3 1998 NO HAZARDOUS WEATHER IS EXPECTED ACROSS NORTHWEST ARKANSAS OR EASTERN OKLAHOMA THROUGH TONIGHT. THE UPPER LEVEL LOW PRESSURE SYSTEM THAT BROUGHT SCATTERED THUNDERSTORMS TO PARTS OF NORTHEAST OKLAHOMA AND NORTHWEST ARKANSAS LAST NIGHT WAS OVER NORTHERN OKLAHOMA THIS MORNING. THE THUNDERSTORMS ASSOCIATED WITH THIS SYSTEM HAD MOVED WELL EAST OF THE AREA. THE UPPER LEVEL WEATHER SYSTEM WILL MOVE ACROSS NORTHEAST OKLAHOMA TODAY AND INTO SOUTHERN MISSOURI THIS AFTERNOON. A SURFACE LOW PRESSURE SYSTEM NEAR PONCA CITY EARLY THIS MORNING WILL MOVE INTO NORTHEAST ARKANSAS THIS AFTERNOON. ALTHOUGH THE ATMOSPHERE VERY NEAR THE SURFACE WAS STILL MOIST... WESTERLY WINDS JUST ABOVE THE SURFACE HAVE DELIVERED VERY DRY AIR INTO THE AREA. THE DRY AIR NEAR THE SURFACE WILL KEEP THE ATMOSPHERE RELATIVELY STABLE DESPITE COLD AIR ALOFT ASSOCIATED WITH THE UPPER LEVEL LOW PRESSURE SYSTEM. A FEW SHOWERS ARE POSSIBLE ACROSS NORTHEAST OKLAHOMA AND NORTHWEST ARKANSAS TODAY...BUT NO THUNDERSTORMS ARE EXPECTED. AS THE SURFACE LOW MOVES EAST OF THE AREA TODAY...GUSTY NORTHWEST WINDS WILL DEVELOP. WIND GUSTS OVER 30 MPH ARE POSSIBLE THIS AFTERNOON BEFORE THE WINDS DIMINISH TONIGHT.
Nearby
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.