Alert archive / Arkansas / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 66, NWS Tulsa, OK

April 3, 1999Crawford County, Madison County, Washington County, Arkansas

NWS Tulsa, OK issued this severe thunderstorm warning at Apr 3, 1999, 3:10 AM CST for Crawford County, Madison County, Washington County, Arkansas. It was in force for 65 min. 3 reports 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, 1999, 3:10 AM CST (09:10 UTC)
Expired: Apr 3, 1999, 4:15 AM CST
In force: 65 min
Issued by: NWS Tulsa, OK
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties Crawford County, AR, Madison County, AR, Washington County, AR

The radar

The Western Arkansas radar (KSRX), 69 km from the middle of the area, began a volume at 09:09 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, 3:20 AM CST	Hail 0.75	Mountainburg, AR
Apr 3, 4:00 AM CST	Thunderstorm Wind	Huntsville, AR	Tree limbs were blown down.
Apr 3, 4:00 AM CST	Hail 1	Alma, 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 00:00Z, 9.2 hours before the alert went out and 118 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: 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

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.

NWS Tulsa, OK wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 3, 12:53 AM CST, 2 hours 17 minutes earlier.

Area forecast discussion, Apr 3, 12:53 AM CST, 2 hours 17 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.

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 3, 2:32 AM CST	Severe Thunderstorm Warning	TSA	Creek, Osage, Pawnee	58 min
Apr 3, 3:11 AM CST	Severe Thunderstorm Warning	TSA	Okfuskee, Okmulgee, Tulsa	49 min
Apr 3, 3:11 AM CST	Severe Thunderstorm Warning	TSA	Washington	49 min
Apr 3, 3:32 AM CST	Severe Thunderstorm Warning	TSA	Osage	28 min
Apr 3, 3:47 AM CST	Severe Thunderstorm Warning	TSA	Muskogee, Wagoner	43 min
Apr 3, 3:47 AM CST	Severe Thunderstorm Warning	TSA	Rogers	43 min
Apr 3, 4:04 AM CST	Severe Thunderstorm Warning	TSA	Nowata, Washington	41 min
Apr 3, 4:23 AM CST	Severe Thunderstorm Warning	TSA	Craig, Mayes	37 min
Apr 3, 4:23 AM CST	Severe Thunderstorm Warning	TSA	Cherokee, Muskogee, Wagoner	37 min
Apr 3, 4:23 AM CST	Severe Thunderstorm Warning	TSA	McIntosh	37 min
Apr 3, 4:47 AM CST	Severe Thunderstorm Warning	TSA	Delaware, Ottawa	58 min
Apr 3, 5:13 AM CST	Severe Thunderstorm Warning	TSA	Latimer	62 min
Apr 3, 6:00 AM CST	Severe Thunderstorm Warning	TSA	Choctaw	45 min
Apr 3, 6:12 AM CST	Flash Flood Warning	TSA	Pushmataha	3 hr
Apr 3, 6:59 AM CST	Flash Flood Warning	TSA	Latimer, LeFlore	3 hr
Apr 3, 7:42 AM CST	Severe Thunderstorm Warning	TSA	LeFlore	48 min
Apr 3, 10:06 AM CST	Severe Thunderstorm Warning	TSA	Okfuskee	39 min
Apr 3, 10:25 AM CST	Severe Thunderstorm Warning	TSA	Pittsburg, Pushmataha	65 min
Apr 3, 11:06 AM CST	Severe Thunderstorm Warning	TSA	Latimer, Pushmataha	39 min
Apr 3, 2:47 AM CST	Severe Thunderstorm Warning	TSA	Crawford, Franklin, Sebastian	43 min
Apr 3, 3:37 AM CST	Tornado Warning	TSA	Crawford, Washington	23 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, 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

Severe Thunderstorm Warnings in Arkansas, 1999 Every severe thunderstorm warning 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.