Alert archive / Arkansas / Tornado Warnings in 1999
Tornado Warning 14, NWS Tulsa, OK
NWS Tulsa, OK issued this tornado warning at Apr 3, 1999, 3:37 AM CST for Crawford County, Washington County, Arkansas. It was in force for 23 min. No storm report in the archive falls 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.
The facts
- Issued
- Apr 3, 1999, 3:37 AM CST (09:37 UTC)
- Expired
- Apr 3, 1999, 4:00 AM CST
- In force
- 23 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Crawford County, AR, Washington County, AR
The radar
The Western Arkansas radar (KSRX), 53 km from the middle of the area, began a volume at 09:39 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.
The nearest sounding before it
Springfield, MO (KSGF), launched 00:00Z, 9.6 hours before the alert went out and 134 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
- 862 J/kg
- Mixed-layer CIN
- -76 J/kg
- Mixed-layer LCL
- 1523 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 135 m²/s²
- 0-3 km storm-relative helicity
- 272 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 4.4
The text
As transmitted, in the capitals the NWS used until 2016.
999 WFUS54 KTSA 030938 RRA TORTUL ARC033-143-031000- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE TULSA OK 337 AM CST SAT APR 3 1999 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A * TORNADO WARNING FOR NORTHEAST CRAWFORD COUNTY IN NORTHWEST ARKANSAS SOUTHEAST WASHINGTON COUNTY IN NORTHWEST ARKANSAS * UNTIL 400 AM CST * AT 337 AM CST...RADAR INDICATED A SEVERE THUNDERSTORM WITH STRONG ROTATION 2 MILES EAST OF CHESTER. MOVING NORTHEAST AT 20 MPH...THIS DANGEROUS STORM COULD PRODUCE A TORNADO AT ANY TIME. * SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE... CHESTER... MOUNTAINBURG AND WINSLOW IN ADDITION TO THE THREAT OF A TORNADO...LARGE HAIL AND DAMAGING STRAIGHT LINE WINDS CAN BE EXPECTED WITH THIS STORM. GO TO A SAFE PLACE NOW LAT...LON 3569 9428 3556 9413 3573 9393 3594 9397
What forecasters said that day
The local office's own words before this tornado 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 tornado warning went out at Apr 3, 12:53 AM CST, 2 hours 44 minutes earlier.
Area forecast discussion, Apr 3, 12:53 AM CST, 2 hours 44 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE TULSA OK 1253 AM CST SAT APR 3 1999 JUST UPDATED ZONES TO ADD NEW WW HEADLINE TO APPROPRIATE ZONES. ALSO INCREASED OVERNIGHT LOWS AND INCREASED POPS IN THE ZONES WITH THE WATCH GIVEN SOLID NATURE OF THE LINE WHICH WILL APPROACH FROM THE WEST BEFORE SUNRISE. LATEST SURFACE ANALYSIS SHOWS LARGEST PRESSURE FALLS AND THE LOWEST LIFTED INDICES SOUTH ALONG THE RED RIVER...THOUGH MODERATE INSTABILITIES AND PRESSURE FALLS EXTEND NORTHEASTWARD ALL THE WAY INTO CENTRAL MO. MORE BETWEEN 400 AND 500 AM. FCSTID = 22 .TUL... OK...SEVERE THUNDERSTORM WATCH UNTIL 600 AM CST SATURDAY FOR ZONES OKZ054>056...OKTZ059>061...OKZ064>066. AR...NONE.
In the hours before
Local storm report, Apr 3, 3:16 AM CST, 21 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
416 AM CST SAT APR 03 1999
TIME(CST) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0306 AM 4 BRISTOW OK 60 MPH TSTM GUST
04/03/99 CREEKLocal storm report, Apr 3, 3:18 AM CST, 19 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
418 AM CST SAT APR 03 1999
TIME(CST) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0306 AM : MANNFORD OK 60 MPH TSTM GUST
04/03/99 CREEK
0306 AM MANNFORD OK .75 INCH HAIL
04/03/99 CREEKLocal storm report, Apr 3, 3:21 AM CST, 16 minutes before
STORM REPORT CORRECTED ...CORRECTED FOR TIME...
NATIONAL WEATHER SERVICE TULSA, OK
321 AM CST SAT APR 03 1999
TIME(CST) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0306 AM MANNFORD OK 60 MPH TSTM GUST
04/03/99 CREEK
0306 AM MANNFORD OK .75 INCH HAIL
04/03/99 CREEKThe office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 3, 2:47 AM CST | Severe Thunderstorm Warning | TSA | Crawford, Franklin, Sebastian | 43 min |
| Apr 3, 3:10 AM CST | Severe Thunderstorm Warning | TSA | Crawford, Madison, Washington | 65 min |
| Apr 3, 3:53 AM CST | Tornado Warning | TSA | Madison | 52 min |
| Apr 3, 4:44 AM CST | Severe Thunderstorm Warning | TSA | Madison | 31 min |
| Apr 3, 6:39 AM CST | Flash Flood Warning | TSA | Crawford, Madison, Washington | 2 hr |
| Apr 3, 6:39 AM CST | Flash Flood Warning | TSA | Crawford, Madison, Washington | 66 min |
| Apr 3, 6:59 AM CST | Flash Flood Warning | TSA | Sebastian | 3 hr |
| Apr 3, 7:42 AM CST | Severe Thunderstorm Warning | TSA | Sebastian | 48 min |
| Apr 3, 7:47 AM CST | Severe Thunderstorm Warning | TSA | Franklin | 43 min |
| Apr 3, 1:35 PM CST | Severe Thunderstorm Warning | TSA | Carroll | 40 min |
| Apr 3, 1:55 PM CST | Severe Thunderstorm Warning | TSA | Madison | 35 min |
Nearby
Tornado Warnings in Arkansas, 1999Every tornado warning in 1999Tornadoes in 1999
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; radar from the NEXRAD Level II archive.