Alert archive / Texas / Special Weather Statements in 2011
Special Weather Statement, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this special weather statement at Sep 19, 2011, 2:08 AM CDT for Brazos County, Grimes County, Madison County, Texas. It was in force for 52 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Sep 19, 2011, 2:08 AM CDT (07:08 UTC)
- Expired
- Sep 19, 2011, 3:00 AM CDT
- In force
- 52 min
- Issued by
- NWS Houston/Galveston, TX
Counties Brazos County, TX, Grimes County, TX, Madison County, TX
The radar
The Ft Hood radar (KGRK), 110 km from the middle of the area, began a volume at 07:11 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
Fort Worth, TX (KFWD), launched 00:00Z, 7.1 hours before the alert went out and 249 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
- 2236 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 1912 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 43 m²/s²
- 0-3 km storm-relative helicity
- 99 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 4.2
The text
As transmitted, in the capitals the NWS used until 2016.
723
WWUS84 KHGX 190708
SPSHGX
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
208 AM CDT MON SEP 19 2011
TXZ176-195-196-198-190800-
BRAZOS-BURLESON-GRIMES-MADISON-
208 AM CDT MON SEP 19 2011
...SIGNIFICANT WEATHER ADVISORY...
AT 205 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF STRONG THUNDERSTORMS 13 MILES NORTH OF BRYAN...MOVING
SOUTHEAST AT 25 MPH.
ONE HALF INCH DIAMETER HAIL...FREQUENT CLOUD TO GROUND LIGHTNING...BRIEF
HEAVY DOWNPOURS...AND WIND GUSTS TO 35 MPH ARE POSSIBLE WITH THIS STORM.
LOCATIONS IN THE PATH OF THIS STORM INCLUDE...WELLBORN...ROANS
PRAIRIE...RICHARDS...PLANTERSVILLE...NORTH ZULCH...MILLICAN...
KURTEN...IOLA...CARLOS...BEDIAS...ANDERSON...WIXON VALLEY...
NORMANGEE...NAVASOTA...MADISONVILLE...COLLEGE STATION AND BRYAN.
AVOID TALL OUTDOOR OBJECTS THAT CAN ATTRACT LIGHTNING. IF YOU ARE
OUTDOORS AND HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY
LIGHTNING. SEEK SHELTER IN A STURDY STRUCTURE OR NON-CONVERTIBLE
AUTOMOBILE UNTIL THIS STORM HAS PASSED.
LAT...LON 3074 9661 3071 9656 3075 9647 3085 9642
3093 9635 3099 9625 3100 9618 3108 9606
3110 9599 3110 9595 3085 9587 3035 9581
3025 9586 3030 9604 3072 9666
TIME...MOT...LOC 0707Z 308DEG 28KT 3084 9632
$$The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 19, 12:49 AM CDT | Special Weather Statement | HGX | Houston | 56 min |
| Sep 19, 3:48 AM CDT | Special Weather Statement | HGX | Austin, Brazoria, Colorado, Fort Bend, Harris, Jackson and 6 more | 117 min |
| Sep 19, 4:23 AM CDT | Special Marine Warning | HGX | 52 min | |
| Sep 19, 5:55 AM CDT | Special Marine Warning | HGX | 65 min |
Nearby
Special Weather Statements in Texas, 2011Every special weather statement in 2011
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.