Search and explore the rolling 365-day signal archive. Historical presence shows what sources reported at the time; it is not independent verification.
The areas affected include... Coastal waters from Englewood to Tarpon Springs FL out 20 NM... Coastal waters from Tarpon Springs to Suwannee River FL out 20 NM... At 500 PM EDT, Doppler radar indicated strong thunderstorms, capable of producing winds to around 30 knots. These thunderstorms were located along a line ext…
At 259 PM MDT, Doppler radar was tracking a strong thunderstorm over Federal, or 19 miles northwest of Cheyenne, moving northeast at 35 mph. HAZARD...Wind gusts up to 50 mph and half inch hail. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Minor hail damag…
344 announcements and 110 withdrawals across 115 RIS peers. Origins observed: AS31549. Withdrawals can reflect maintenance or normal convergence. Cause is unconfirmed.
At 256 PM MDT, Doppler radar was tracking strong thunderstorms along a line extending from 15 miles southwest of Fort Shaw to near Cascade to 12 miles east of Wolf Creek. Movement was northeast at 20 mph. HAZARD...Wind gusts up to 50 mph. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and bl…
107 announcements and 103 withdrawals across 106 RIS peers. Origins observed: AS269370. Withdrawals can reflect maintenance or normal convergence. Cause is unconfirmed.
101 announcements and 114 withdrawals across 104 RIS peers. Origins observed: AS269370. Withdrawals can reflect maintenance or normal convergence. Cause is unconfirmed.
605 announcements and 148 withdrawals across 178 RIS peers. Origins observed: AS150683. Withdrawals can reflect maintenance or normal convergence. Cause is unconfirmed.
102 announcements and 112 withdrawals across 104 RIS peers. Origins observed: AS269370. Withdrawals can reflect maintenance or normal convergence. Cause is unconfirmed.
564 announcements and 132 withdrawals across 178 RIS peers. Origins observed: AS151473. Withdrawals can reflect maintenance or normal convergence. Cause is unconfirmed.
202 announcements and 159 withdrawals across 147 RIS peers. Origins observed: AS141380. Withdrawals can reflect maintenance or normal convergence. Cause is unconfirmed.
AQAHGX The Texas Commission on Environmental Quality (TCEQ) has issued an Ozone Action Day for the Houston, Galveston, and Brazoria area for Sunday, August 30, 2026. Atmospheric conditions are expected to be favorable for producing high levels of ozone pollution in the Houston, Galveston, and surrounding areas on Sunda…
155 announcements and 134 withdrawals across 133 RIS peers. Origins observed: AS61636. Withdrawals can reflect maintenance or normal convergence. Cause is unconfirmed.
190 announcements and 107 withdrawals across 134 RIS peers. Origins observed: AS211961. Withdrawals can reflect maintenance or normal convergence. Cause is unconfirmed.
SVRCYS The National Weather Service in Cheyenne has issued a * Severe Thunderstorm Warning for... Southwestern Niobrara County in east central Wyoming... Goshen County in southeastern Wyoming... Northeastern Platte County in southeastern Wyoming... Southeastern Converse County in east central Wyoming... * Until 345 PM…
102 announcements and 113 withdrawals across 105 RIS peers. Origins observed: AS150708. Withdrawals can reflect maintenance or normal convergence. Cause is unconfirmed.
SVRTBW The National Weather Service in Ruskin has issued a * Severe Thunderstorm Warning for... Northeastern Manatee County in west central Florida... Southeastern Hillsborough County in west central Florida... * Until 515 PM EDT. * At 450 PM EDT, a severe thunderstorm was located near Parrish, or 15 miles east of Palm…
At 249 PM MDT, Doppler radar was tracking a line of showers and thunderstorms extending from over Meeker Park to over Idaho Springs, or extending from 33 miles southwest of Fort Collins to 30 miles west of Denver, moving east at 35 mph. HAZARD...Wind gusts up to 40 mph. SOURCE...Radar indicated. IMPACT...Gusty winds co…
138 announcements and 107 withdrawals across 119 RIS peers. Origins observed: AS206388. Withdrawals can reflect maintenance or normal convergence. Cause is unconfirmed.
* WHAT...Flooding caused by excessive rainfall is expected. * WHERE...Southwestern Bladen County in southeastern North Carolina... * WHEN...Until 730 PM EDT. * IMPACTS...Minor flooding in low-lying and poor drainage areas. * ADDITIONAL DETAILS... - At 447 PM EDT, Doppler radar indicated heavy rain due to thunderstorms.…
184 announcements and 116 withdrawals across 139 RIS peers. Origins observed: AS219287. Withdrawals can reflect maintenance or normal convergence. Cause is unconfirmed.
At 146 PM PDT, Doppler radar was tracking a strong thunderstorm 19 miles southeast of Pinto Summit, moving northeast at 25 mph. HAZARD...Wind gusts up to 40 mph. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include... Little Antelope Su…
610 announcements and 133 withdrawals across 178 RIS peers. Origins observed: AS138423. Withdrawals can reflect maintenance or normal convergence. Cause is unconfirmed.
612 announcements and 132 withdrawals across 179 RIS peers. Origins observed: AS138423. Withdrawals can reflect maintenance or normal convergence. Cause is unconfirmed.
572 announcements and 136 withdrawals across 176 RIS peers. Origins observed: AS138590. Withdrawals can reflect maintenance or normal convergence. Cause is unconfirmed.
570 announcements and 135 withdrawals across 179 RIS peers. Origins observed: AS153390. Withdrawals can reflect maintenance or normal convergence. Cause is unconfirmed.
570 announcements and 135 withdrawals across 179 RIS peers. Origins observed: AS153390. Withdrawals can reflect maintenance or normal convergence. Cause is unconfirmed.
573 announcements and 137 withdrawals across 173 RIS peers. Origins observed: AS135115. Withdrawals can reflect maintenance or normal convergence. Cause is unconfirmed.
603 announcements and 148 withdrawals across 175 RIS peers. Origins observed: AS154022. Withdrawals can reflect maintenance or normal convergence. Cause is unconfirmed.
611 announcements and 133 withdrawals across 179 RIS peers. Origins observed: AS138423. Withdrawals can reflect maintenance or normal convergence. Cause is unconfirmed.
593 announcements and 138 withdrawals across 177 RIS peers. Origins observed: AS141432. Withdrawals can reflect maintenance or normal convergence. Cause is unconfirmed.
610 announcements and 133 withdrawals across 178 RIS peers. Origins observed: AS138423. Withdrawals can reflect maintenance or normal convergence. Cause is unconfirmed.
612 announcements and 132 withdrawals across 179 RIS peers. Origins observed: AS138423. Withdrawals can reflect maintenance or normal convergence. Cause is unconfirmed.
537 announcements and 156 withdrawals across 180 RIS peers. Origins observed: AS138590. Withdrawals can reflect maintenance or normal convergence. Cause is unconfirmed.
At 445 PM EDT, Doppler radar was tracking strong thunderstorms along a line extending from 8 miles northwest of Ona to 8 miles east of Parrish to South Bradenton. Movement was northwest at 10 mph. HAZARD...Wind gusts of 50 to 55 mph. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow ar…