Flash Flood Warning Issued for Cooke and Grayson Counties in Texas

Source: NOAA · North Central Texas

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NWS Fort Worth has issued a Flash Flood Warning for east central Cooke County and Grayson County until 2:00 PM CDT on May 19, 2026, due to thunderstorms producing heavy rain.

What this NWS weather alert tells you, and what most readers miss

This notice was issued by NOAA on May 31, 2026 and geographically references North Central Texas. Its severity classification of "high" signals how the issuing agency weighs the risk of harm if no action is taken — "critical" and "high" tier alerts typically carry direct consumer actions, while "medium" and "low" tend toward informational guidance or monitoring advisories. The category it belongs to — Weather Alerts — determines the regulatory framework behind it, which shapes what remedies (refunds, replacements, recalls, evacuations) are available to affected individuals and who holds statutory responsibility for enforcement.

Most readers skim a notice like this, check whether they are personally affected, and move on. The more useful lens is to read it as a data point about the issuing system: how quickly NOAA detected the hazard, how precise the geographic or product-identifier scope is, and whether similar notices have clustered in the same category or region in the last 90 days. Cluster patterns frequently precede a broader regulatory action — a single localized NWS weather alert is isolated; three of them within a quarter often indicate a supply-chain, infrastructure, or seasonal driver that will keep producing notices until something structural changes.

For decision-making, Areazine pairs each alert with the original agency URL, the full agency name, and a timestamp so you can verify the notice against the primary source before acting on it. Tags on this item (weather, alert, Flash Flood Warning, North Central Texas) map to related alerts in the same area of risk — browsing them together gives a clearer picture than any single notice alone, because the shape of an ongoing issue only becomes visible across multiple sequential alerts.

Alert Details

A Flash Flood Warning has been issued by the National Weather Service in Fort Worth TX. The alert is effective from May 19, 2026 at 10:53 AM CDT until May 19, 2026 at 2:00 PM CDT.

Affected Areas

The warning covers east central Cooke County and Grayson County in north central Texas. Locations that will experience flash flooding include Sherman, Whitesboro, Denison, Van Alstyne, Howe, Pottsboro, Collinsville, Gunter, Callisburg, Knollwood, Dorchester, Lake Texoma, Eisenhower State Park, Randell Lake, Preston, Southmayd, Tioga, Sadler, Walnut Bend and Locust.

What You Should Do

Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be aware of your surroundings and do not drive on flooded roads.

Expected Conditions

At 10:53 AM CDT, Doppler radar and automated rain gauges indicated thunderstorms producing heavy rain across the warned area. Between 1 and 3 inches of rain have fallen. Flash flooding is ongoing or expected to begin shortly.

Timeline

The Flash Flood Warning is in effect from May 19, 2026 at 10:53 AM CDT until May 19, 2026 at 2:00 PM CDT.

Original source: NOAA Official Notice ↗

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Frequently Asked Questions

Common questions about this NWS weather alert.

What is this NWS weather alert about?
NWS Fort Worth has issued a Flash Flood Warning for east central Cooke County and Grayson County until 2:00 PM CDT on May 19, 2026, due to thunderstorms producing heavy rain.
Which agency issued this alert?
This alert was issued by NOAA. The original notice is available at the source link at the bottom of this article.
How severe is this alert?
This alert is classified as "high" severity. Take precautions and monitor for updates.
What area is affected?
This alert affects North Central Texas. Check with NOAA for the most current geographic scope.
Where can I find more Weather Alerts updates?
Browse the full Weather Alerts feed on Areazine at areazine.com/weather/ for the latest updates from NOAA and other agencies.