#688 Postby jasons2k » Tue Jul 19, 2022 8:22 am
Morning update from Jeff Lindner:
Red Flag Warning from 1000am-1000pm: Brazos, Burleson, Grimes, Houston, Madison, Walker, and Washington Counties
Heat Advisory until 800pm: All counties except the coast
Overnight the Texas Forest Service has requested that the criteria for a local Red Flag Warning be lowered to humidity values of 25% and wind speeds of 15mph. Given this requested criteria, locations generally along and N of HWY 105 will meet these values by late morning into the late evening hours and a Red Flag Warning has been issued. Near critical fire weather conditions will be in place southward to near I-10 for this afternoon. As discussed previously, fuel loads have dried to the point where they are highly combustible and fires over the last 24-48 hours have shown rapid growth rates in both the ladder (medium) and crown (large…tree tops). This has been an escalation of the fire weather potential over the last few weeks where mainly the dried grasses (fine fuels) burned. Fire behavior on Monday in northern Walker County and Sunday in Trinity County indicate conditions have or are close to critical levels.
Nelson Creek Fire (Northern Walker County):
Fire is 1500 acres and 35% contained. Air and ground resources have been working the fire overnight in dense pines. Monday afternoon the fire burned nearly 1000 acres in about 3 hours with significant crown runs and forward spotting…both are rare for this area and generally not observed since the 2011 fires. Overnight fire behavior has been moderate, but with weather conditions deteriorating by late morning, expect forward progress on the fire’s north and northeast flanks to resume as southerly winds increase. Numerous agencies have/are responding to this fire including: Huntsville, Lovelady, Weldon, Trinity, Riverside, Crabb Prairie, Walker County, Trinity County, Texas Forest Service, DPS, and various local law enforcement. 12 dozer crews have worked the fire overnight cutting containment lines and have made good progress on the south and southwest sides of the fire. TFS single engine air tanker (SEAT) out of Brownwood has made several drops and additional air resources have been ordered for drops this morning to help in containment lines.
Any fire starts today will have the potential for rapid spread.
Fire Weather Conditions (1000am-1000pm today):
North of HWY 105:
Temperature: 102-106
Heat Index: 105-110
Humidity: 20-28%
Max Mixing Height: 6000-8500 ft
20ft Wind: S at 13-25mph
Transport Wind: S/SW 10-15 kts
North of I-10:
Temperature: 99-102
Heat Index: 105-110
Humidity: 25-40%
Max Mixing Height: 5000-7000 ft
20ft Wind: S at 13-25mph
Transport Wind: S 10-15kts
South of I-10:
Temperature: 96-100
Heat Index: 107-111
Humidity: 35-50%
Max Mixing Height: 4000-6000 ft
20 ft Wind: S 13-25mph (winds will become gusty with passage of the seabreeze late afternoon)
Transport Wind: SW 15 kts
Jeff Lindner
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