Alert archive / Texas / Flash Flood Warnings in 2026
Flash Flood Warning 52, NWS Fort Worth, TX
NWS Fort Worth, TX issued this flash flood warning at Jun 12, 2026, 12:25 PM CDT for Fannin County, Grayson County, Texas. It was in force for 105 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
- Jun 12, 2026, 12:25 PM CDT (17:25 UTC)
- Expired
- Jun 12, 2026, 2:10 PM CDT
- In force
- 105 min
- Issued by
- NWS Fort Worth, TX
- Area
- Storm-based polygon
- Flood severity
- None
Counties Fannin County, TX, Grayson County, TX
The radar
The Dallas/Ft Worth radar (KFWS), 143 km from the middle of the area, began a volume at 17:28 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
Norman, OK (KOUN), launched 12:00Z, 5.4 hours before the alert went out and 201 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
- 272 J/kg
- Mixed-layer CIN
- -236 J/kg
- Mixed-layer LCL
- 1104 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- 91 m²/s²
- 0-3 km storm-relative helicity
- 152 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 10.1
What forecasters said that day
The local office's own words before this flash flood 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 flash flood warning went out at Jun 12, 5:53 AM CDT, 6 hours 32 minutes earlier. Its key messages:
- Hot and humid conditions will continue into the weekend with highs in the 90s and peak heat indices in the 100-105 range.
- Isolated to scattered showers and storms are possible Friday morning through Friday afternoon, primarily along and north of the I-20 corridor. Gusty winds, lightning, and brief heavy rainfall will be the primary threats.
- More widespread showers and thunderstorms (60-90% chance) look to return to the area Sunday into Monday.
Area forecast discussion, Jun 12, 5:53 AM CDT, 6 hours 32 minutes before
Area Forecast Discussion National Weather Service Fort Worth TX 553 AM CDT Fri Jun 12 2026 ...New AVIATION... .KEY MESSAGES... - Hot and humid conditions will continue into the weekend with highs in the 90s and peak heat indices in the 100-105 range. - Isolated to scattered showers and storms are possible Friday morning through Friday afternoon, primarily along and north of the I-20 corridor. Gusty winds, lightning, and brief heavy rainfall will be the primary threats. - More widespread showers and thunderstorms (60-90% chance) look to return to the area Sunday into Monday. && .SHORT TERM... (Through Saturday) Issued at 149 AM CDT Fri Jun 12 2026 Thunderstorms along a weak frontal boundary across south-central Oklahoma have quickly diminished over the last couple hours as they entered a very high CIN environment. Renewed development is likely near and just north of the Red River later tonight into early Friday morning as warm/moist advection increases into this boundary. Most of North Texas is expected to remain dry through sunrise. The current suite of high-resolution guidance is quite bullish on scattered thunderstorms or a thunderstorm complex propagating south-southwestward toward the I-20 corridor through the morning and early afternoon hours of Friday along a rapidly- moving outflow boundary. This solution would place scattered thunderstorms in and around the Metroplex in the 11AM-2PM timeframe. As always with these summertime convective setups, the details that impact the placement and timing of thunderstorms are small-scale and it will be tough to nail down a precise timing/coverage of storms through midday Friday, so check the radar before you head out the door Friday morning. Gusty winds up to 40 mph, lightning, and brief heavy rainfall will be the primary hazards. Thunderstorm coverage will lessen as we get further into the afternoon and evening hours, but we will need to monitor for additional, very isolated development along remnant outflow boundaries. This activity will pose a slightly more elevated threat for isolated severe wind gusts as temperatures rise into the low to mid 90s. Speaking of temperatures, if a barreling outflow boundary occurs in the morning/early afternoon, many north of I-20 may struggle to escape the 80s Friday afternoon. Those south of I-20 will still see temperatures rise into the low to mid 90s with peak heat indices in the 100-107 degrees. A Heat Advisory was considered for this afternoon across parts of the Metroplex and south, but the potential for convection to keep temperatures well below criteria is too high at this moment for an issuance. However, if thunderstorm coverage remains more isolated and outflow remains more localized, we could see several locations along and north of I-20 approach Heat Advisory criteria. Any lingering shower/storm activity will rapidly dissipate after sunset Friday evening with mostly dry conditions continuing through Saturday as weak ridging builds in behind this system. Expect widespread afternoon highs in the low to mid 90s on Saturday with heat index values peaking in the 100-107 degree range. && .LONG TERM... (Saturday through Thursday) Issued at 149 AM CDT Fri Jun 12 2026 A big pattern change is expected toward the end of the weekend and into early next week as broad troughing shifts over the Plains allowing for a rather strong cold front by mid-June standards to slide south into North Texas. Current guidance highlights scattered to widespread showers and storms along and ahead of the cold front approaching the Red River late Sunday morning. This activity will gradually shift south as the cold front makes way toward the I-20 corridor by Sunday afternoon/evening and eventually Central Texas Sunday night. This boundary will provide a focus for continued thunderstorm development into Monday, primarily south of I-20 as mid-level shortwave impulses traverse over this boundary amidst a very moist environment. Deep-layer shear looks rather modest, so the severe threat will remain quite low. However, the threat for heavy rainfall and localized flash flooding will ramp up late Sunday into Monday, especially in areas that experience training or slow-moving thunderstorms. The effective cold front will likely stall somewhere in between the Brazos Valley and the Texas Gulf Coast sometime Monday evening with isolated to scattered storms continuing into Tuesday morning across our far southeastern counties. Drier air will settle in by Tuesday afternoon, effectively ending rain chances across most of our forecast area. Increased cloud cover, rainfall, and northerly winds will allow for a couple of "cool" days to start next with current forecasted highs in the upper 70s to mid 80s Monday and Tuesday. Southerly winds return by Wednesday as do temperatures in the 90s. && .AVIATION... (12Z TAFS) Issued at 552 AM CDT Fri Jun 12 2026 SCT to BKN 1.5-3 kft cigs currently overspread parts of North and Central Texas including KACT and the Metroplex. Expect intermittent MVFR cigs for the next few hours. An outflow boundary/effective cold front currently extends from Wichita Falls to southeastern Oklahoma with an ongoing storm complex northeast of Paris. We are expecting additional isolated to scattered storm development near that boundary later this morning into the afternoon, some of which may approach the Metroplex terminals after 17Z-18Z this afternoon. Some of the latest high-resolution guidance is less bullish on thunderstorm potential this afternoon, but with a boundary shifting into a very moist and moderately unstable environment, there will likely be at least isolated to scattered development through the day. Otherwise, expect south winds at 8-12 kts through much of the TAF period. && .SPOTTER INFORMATION STATEMENT... Issued at 606 PM CDT Wed Jun 10 2026 Spotter activation is not expected at this time. && .PRELIMINARY POINT TEMPS/POPS... Dallas-Ft. Worth 92 78 95 78 / 30 10 0 10 Waco 92 76 93 77 / 20 0 0 0 Paris 87 75 91 76 / 50 10 10 40 Denton 90 78 94 78 / 40 0 0 30 McKinney 90 78 93 78 / 40 10 0 30 Dallas 92 79 96 79 / 30 10 0 10 Terrell 91 77 94 77 / 30 10 0 10 Corsicana 93 76 96 77 / 20 0 0 0 Temple 92 75 93 76 / 20 0 0 0 Mineral Wells 91 76 95 76 / 30 10 0 10 && .FWD WATCHES/WARNINGS/ADVISORIES... None. && SHORT TERM...Langfeld LONG TERM....Langfeld AVIATION...Langfeld
The office that day
Everything else NWS Fort Worth, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 12, 9:43 AM CDT | Areal Flood Advisory | FWD | Fannin, Lamar | 3 hr |
| Jun 12, 9:57 AM CDT | Flash Flood Warning | FWD | Fannin | 2 hr |
| Jun 12, 11:38 AM CDT | Areal Flood Advisory | FWD | Cooke, Grayson | 112 min |
| Jun 12, 12:12 PM CDT | Areal Flood Advisory | FWD | Fannin, Grayson | 3 hr |
| Jun 12, 1:25 PM CDT | Heat Advisory | FWD | Collin, Dallas, Denton, Ellis, Hood, Hunt and 8 more | 4 hr |
| Jun 12, 1:37 PM CDT | Areal Flood Advisory | FWD | Cooke, Denton, Wise | 113 min |
| Jun 12, 3:41 PM CDT | Special Weather Statement | FWD | Young | 34 min |
| Jun 12, 4:12 PM CDT | Areal Flood Advisory | FWD | Bosque, Somervell | 2 hr |
| Jun 12, 4:59 PM CDT | Areal Flood Advisory | FWD | Limestone | 2 hr |
Nearby
Flash Flood Warnings in Texas, 2026Every flash flood warning in 2026
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.