Alert archive / Texas / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 41, NWS Norman, OK

March 18, 1998Archer County, Texas

NWS Norman, OK issued this severe thunderstorm warning at Mar 18, 1998, 8:28 PM CST for Archer County, Texas. It was in force for 47 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: Mar 18, 1998, 8:28 PM CST (02:28 UTC)
Expired: Mar 18, 1998, 9:15 PM CST
In force: 47 min
Issued by: NWS Norman, OK
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Archer County, TX

What was reported inside it

Time	Report	Where
Mar 18, 8:35 PM CST	Hail 0.75	Dundee, TX
Mar 18, 8:40 PM CST	Hail 0.88	Lake Kickapoo, TX
Mar 18, 8:45 PM CST	Hail 1	Archer City, TX

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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Mar 18, 3:00 PM CST	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 2.5 hours before the alert went out and 156 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: 176 J/kg
Mixed-layer CIN: -24 J/kg
Mixed-layer LCL: 2376 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 38 m²/s²
0-3 km storm-relative helicity: 111 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.7

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 Norman, OK wrote its last area forecast discussion before this severe thunderstorm warning went out at Mar 18, 3:30 PM CST, 4 hours 58 minutes earlier.

Area forecast discussion, Mar 18, 3:30 PM CST, 4 hours 58 minutes before

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In the hours before

Local storm report, Mar 18, 8:11 PM CST, 17 minutes before

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Local storm report, Mar 18, 8:28 PM CST, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 18, 9:37 PM CST	Severe Thunderstorm Warning	OUN	Jefferson	53 min
Mar 18, 9:58 PM CST	Severe Thunderstorm Warning	OUN	Grady, McClain	32 min
Mar 18, 10:19 PM CST	Severe Thunderstorm Warning	OUN	Cleveland, McClain	41 min
Mar 18, 10:52 PM CST	Severe Thunderstorm Warning	OUN	Carter, Garvin, Murray	53 min
Mar 18, 11:07 PM CST	Severe Thunderstorm Warning	OUN	Love, Marshall	53 min
Mar 18, 11:07 PM CST	Severe Thunderstorm Warning	OUN	Johnston, Pontotoc	53 min
Mar 18, 11:17 PM CST	Severe Thunderstorm Warning	OUN	Pottawatomie	43 min
Mar 18, 11:29 PM CST	Severe Thunderstorm Warning	OUN	Seminole	31 min
Mar 18, 11:42 PM CST	Severe Thunderstorm Warning	OUN	Bryan	48 min
Mar 18, 11:54 PM CST	Severe Thunderstorm Warning	OUN	Hughes	51 min
Mar 19, 12:12 AM CST	Severe Thunderstorm Warning	OUN	Atoka, Coal	48 min
Mar 18, 8:00 PM CST	Severe Thunderstorm Warning	OUN	Baylor	60 min
Mar 18, 9:07 PM CST	Severe Thunderstorm Warning	OUN	Clay	53 min

Nearby

Severe Thunderstorm Warnings in Texas, 1998 Every 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.