Alert archive / Texas / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 19, NWS Fort Worth, TX

March 17, 2018Bell County, Milam County, Texas

NWS Fort Worth, TX issued this severe thunderstorm warning at Mar 17, 2018, 8:00 PM CDT for Bell County, Milam County, Texas. It was in force for 40 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Mar 17, 2018, 8:00 PM CDT (01:00 UTC)
Expired: Mar 17, 2018, 8:40 PM CDT
In force: 40 min
Issued by: NWS Fort Worth, TX
Area: Storm-based polygon
Hail: 1.25 in
Wind: 60.0 mph

Counties Bell County, TX, Milam County, TX

The radar

The Ft Hood radar (KGRK), 26 km from the middle of the area, began a volume at 01:02 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 watch it was issued in

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

Issued	Product	Office	Lasted
Mar 17, 2:20 PM CDT	Severe Thunderstorm Watch	SPC	9 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 1.0 hours before the alert went out and 213 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1216 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: 60 m²/s²
0-3 km storm-relative helicity: 234 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

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 Fort Worth, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Mar 17, 7:30 PM CDT, 30 minutes earlier.

Area forecast discussion, Mar 17, 7:30 PM CDT, 30 minutes before

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Hazardous weather outlook, Mar 17, 3:02 PM CDT, 4 hours 58 minutes before

Hazardous Weather Outlook
National Weather Service Fort Worth TX
302 PM CDT Sat Mar 17 2018

TXZ091>095-100>107-115>123-129>135-141>148-156>162-174-175-181230-
Montague-Cooke-Grayson-Fannin-Lamar-Young-Jack-Wise-Denton-Collin-
Hunt-Delta-Hopkins-Stephens-Palo Pinto-Parker-Tarrant-Dallas-
Rockwall-Kaufman-Van Zandt-Rains-Eastland-Erath-Hood-Somervell-
Johnson-Ellis-Henderson-Comanche-Mills-Hamilton-Bosque-Hill-Navarro-
Freestone-Anderson-Lampasas-Coryell-Bell-McLennan-Falls-Limestone-
Leon-Milam-Robertson-
302 PM CDT Sat Mar 17 2018

This Hazardous Weather Outlook is for North and Central Texas.

.DAY ONE...Tonight.
Severe thunderstorms are expected to affect much of North and
Central Texas through this evening and tonight. The most likely areas
for severe weather and supercell thunderstorms are near and south of
Interstate 20. Large hail will be the primary threat, although
damaging winds and tornadoes are also possible.

Later tonight, storms are expected to grow into a larger cluster or
broken line as they move east of Interstate 35. Damaging winds and
large hail will continue to be possible.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.
Thunderstorm chances will continue for North and Central Texas
Sunday and Sunday night. A few storms could be severe during this
time with mainly a large hail and damaging wind threat. The severe
threat will be highest east of I-35 during this time.

Critical fire weather conditions may occur west of I-35 on Sunday
afternoon and across all of North and Central Texas on Monday
afternoon.

.SPOTTER INFORMATION STATEMENT...
Spotter activation will likely be requested throughout this evening.

In the hours before

Local storm report, Mar 17, 6:20 PM CDT, 1 hour 40 minutes before

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Local storm report, Mar 17, 6:37 PM CDT, 1 hour 23 minutes before

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Special weather statement, Mar 17, 7:19 PM CDT, 41 minutes before

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Special weather statement, Mar 17, 7:27 PM CDT, 33 minutes before

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Special weather statement, Mar 17, 7:43 PM CDT, 17 minutes before

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Special weather statement, Mar 17, 7:56 PM CDT, 4 minutes before

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The office that day

Everything else NWS Fort Worth, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 17, 7:19 PM CDT	Special Weather Statement	FWD	Robertson	41 min
Mar 17, 7:22 PM CDT	Severe Thunderstorm Warning	FWD	Falls, Leon, Limestone, Robertson	53 min
Mar 17, 7:27 PM CDT	Special Weather Statement	FWD	Falls	33 min
Mar 17, 7:43 PM CDT	Special Weather Statement	FWD	Robertson	32 min
Mar 17, 7:56 PM CDT	Special Weather Statement	FWD	Bell	34 min
Mar 17, 8:16 PM CDT	Special Weather Statement	FWD	Leon	29 min
Mar 17, 8:20 PM CDT	Severe Thunderstorm Warning	FWD	Leon	55 min
Mar 17, 9:15 PM CDT	Special Weather Statement	FWD	Milam	45 min
Mar 18, 12:01 AM CDT	Areal Flood Advisory	FWD	Anderson, Leon	119 min
Mar 18, 3:52 AM CDT	Fire Weather Watch	FWD	Comanche, Coryell, Eastland, Erath, Hamilton, Lampasas and 4 more	24 hr
Mar 18, 4:03 PM CDT	Severe Thunderstorm Warning	FWD	Milam, Robertson	57 min
Mar 18, 4:35 PM CDT	Special Weather Statement	FWD	Bosque	40 min
Mar 18, 4:39 PM CDT	Severe Thunderstorm Warning	FWD	Bosque	51 min
Mar 18, 4:54 PM CDT	Severe Thunderstorm Warning	FWD	Robertson	36 min
Mar 18, 5:14 PM CDT	Severe Thunderstorm Warning	FWD	Hill, Johnson	61 min
Mar 18, 5:23 PM CDT	Severe Thunderstorm Warning	FWD	Bosque, Hill, McLennan	67 min
Mar 18, 5:27 PM CDT	Tornado Warning	FWD	Bosque, Hill	33 min
Mar 18, 5:39 PM CDT	Severe Thunderstorm Warning	FWD	Milam, Robertson	66 min
Mar 18, 6:24 PM CDT	Severe Thunderstorm Warning	FWD	Hill, Limestone, McLennan, Navarro	66 min

Nearby

Severe Thunderstorm Warnings in Texas, 2018 Every severe thunderstorm warning in 2018

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.