May 12, 2026 brief covers the CDC’s HAN-528 hantavirus advisory tied to a South Atlantic cruise ship, the FEMA Review Council’s final report recommending structural changes to federal disaster support, the June 10 deadline for Washington storm and flooding survivors, NIFC’s count of 20 uncontained large fires with critical fire weather in eastern Montana and western North Dakota, the USGS Kīlauea episode 47 forecast window, and state-level items including Michigan’s Oakland County water emergency, FAA ground stops at DFW and Love Field, the Arizona Jones Fire, a Louisiana tornado warning, and the Cherry Valley, Illinois boil order. EM Morning Brief is your concise daily update on national and state-by-state emergency management news. Produced by Sitch Radio, an EOC Voices podcast.

Key Takeaways

• CDC HAN-528: Clinicians and labs should consider hantavirus pulmonary syndrome in symptomatic returning cruise passengers; broad U.S. spread risk is very low.

• NIFC SITREP: 20 uncontained large fires; Southern Area at PL 4; eastern Montana and western North Dakota under Critical Fire Weather Risk today.

• FEMA Review Council: Final report approved May 11 recommends stricter declaration thresholds, faster state payments, and one-time survivor aid in place of long-term housing.

• FEMA Washington: June 10, 2026 deadline to apply for federal individual assistance for December 2025 storms and flooding.

• USGS Kīlauea: ADVISORY/YELLOW; episode 47 fountaining forecast window opens May 12 and runs through May 15.

• CISA KEV: Recent additions including BerriAI LiteLLM and Ivanti Endpoint Manager Mobile entries have action dates landing this week.

• Michigan: State of emergency in Oakland County; boil water advisories in Orion Township, Auburn Hills, Lake Orion, parts of Rochester Hills, and Oakland University main campus.

• Texas: FAA ground stops at DFW and Love Field on May 11 due to severe thunderstorms; widespread national delays.

• Arizona: Jones Fire near Wickenburg burned 100+ acres, closed U.S. 60 at MP 111, and forced evacuations on May 11.

• Louisiana: Tornado warning issued for central St. James Parish on the evening of May 11; daytime flash flood warning for parts of St. Charles and St. John parishes.

• Oregon: Pine Mountain Fire on Deschutes National Forest at 2,589 acres, 85% contained as of May 11.

• Illinois: Cherry Valley boil order in effect after temporary water pressure loss during repairs.

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Sources

CDC

• HAN-528 Hantavirus Cluster — CDC Health Alert Network advisory on multi-country hantavirus cluster linked to a cruise ship

• AHA News on HAN-528 — American Hospital Association summary of the May 11 CDC advisory

CISA

• Known Exploited Vulnerabilities Catalog — Authoritative CISA list of CVEs actively exploited in the wild

• CISA Adds One KEV — May 7, 2026 — Most recent CISA alert adding to the KEV catalog with action dates this week

FEMA

• FEMA Newsroom — Washington Deadline — One-month deadline reminder for FEMA assistance in Washington (June 10, 2026)

• FEMA Review Council Final Report — National Association of Counties summary of the May 11 final report and recommendations

• Disasters and Other Declarations — FEMA’s running list of declarations, amendments, and assistance actions

NIFC and Wildfire

• Incident Management Situation Report — May 11, 2026 — National Interagency Fire Center daily SITREP with national fire activity totals

• National Fire News — NIFC public summary of active large fires and preparedness levels

• InciWeb — Federal incident information system for active wildland fire incidents

NWS and Severe Weather

• Storm Prediction Center Day 1 Outlook — Convective and fire weather outlooks for May 11–12, 2026

• Weather Prediction Center — National forecasts including heavy rain and flooding threats

• Active Watches and Warnings — NWS hazards map for current watches, warnings, and advisories

USGS

• Kīlauea Volcano Update — May 11, 2026 — USGS HVO update keeping Kīlauea at ADVISORY/YELLOW with episode 47 forecast

• Latest Earthquakes Map — USGS real-time global earthquake monitor

DHS and State Department

• DHS National Terrorism Advisory System — Current NTAS bulletins and the homeland threat picture

• U.S. Travel Advisories — State Department country-level travel advisories

Arizona

• Jones Fire near Wickenburg — FOX 10 Phoenix reporting on the May 11 Jones Fire and U.S. 60 closure

Hawaii

• Kīlauea Update — Big Island Video News — Local summary of the May 11 USGS Kīlauea status and episode 47 forecast

Illinois

• Cherry Valley Boil Order — WIFR coverage of the May 11 Cherry Valley boil order

Louisiana

• St. James Parish Tornado Warning — NWS New Orleans tornado warning summary for St. James Parish on May 11

• St. Charles and St. John Flash Flood — WWL flash flood warning coverage for parts of St. Charles and St. John parishes

Michigan

• Oakland County Water Emergency — Oakland County emergency information for the GLWA water main break

• Auburn Hills State of Emergency — City of Auburn Hills emergency notice and water restrictions

• Orion Township Boil Water Advisory — Orion Township notice covering the township-wide boil water advisory

• CBS Detroit Coverage — Reporting on the 42-inch GLWA main break and regional impacts

Montana and North Dakota

• Critical Fire Weather Risk — SPC Day 1 outlook identifying eastern Montana and western North Dakota fire weather concerns

Oregon

• Pine Mountain Fire Update — May 11, 2026 — Central Oregon Fire Information update with size and containment

Texas

• DFW and Love Field Ground Stops — Reporting on the May 11 FAA ground stops and storm impacts

• National Airspace System Status — FAA real-time airport events and ground delay programs

Washington

One Month Remains for FEMA Assistance — FEMA reminder of June 10, 2026 deadline for Washington storm and flooding survivors

Good morning.

The CDC Health Alert Network has issued advisory CAN528 alerting clinicians and health departments to a multi country cluster of hantavirus disease linked to a cruise ship that departed ushuaia, Argentina on April 1 and visited remote South Atlantic islands as of May 8, the World Health Organization counts eight cases, six confirmed, two suspected and three deaths.

CDC says the risk of broad US spread is extremely low and a CDC team met the ship in the Canary Islands on May 7 to assess exposure among U.S. passengers.

Hospitals, public health labs and clinicians are asked to consider Hantavirus pulmonary syndrome in symptomatic returning travelers as and to follow biosafety guidance for specimen handling on the wildfire front, the National Interagency fire Center reports 20 uncontained large fires nationwide, with 13 actively staffed and a collective burned area of about 110,878 acres in the May 11 Incident Management Situation Report.

The national preparedness level remains elevated and the southern area is operating at preparedness level 4 due to heavy resource commitments.

NIFC notes that early heat and critically dry fuels across the Plains and Southwest are driving the season ahead of recent years.

NWS Storm Prediction center has placed parts of eastern Montana and western North Dakota under a critical fire weather risk today, citing gusty winds, low humidity and dry vegetation.

FEMA has issued two operationally relevant items in the past day.

First, Washington Residents affected by December storms and flooding have one month left to apply for federal individual assistance, with the deadline set for June 10th.

Second the FEMA Review Council approved its final report on May 11th, recommending stricter thresholds for federal disaster declarations, direct state payments within 30 days and one time survivor aid in place of long term housing support.

The report has not changed current operations, but signals potential significant shifts in how FEMA pays states and supports survivors going forward.

On the cyber side, CISA's known exploited vulnerabilities catalog continues to track recently added entries with action dates landing this week, including CVE listings affecting Barry A.I.

Litelm and Ivanti Endpoint Manager.

Mobile agencies and critical infrastructure operators should verify patch status against the latest KEV entries lets run through the states.

Arizona the Jones fire near Wickenburg burned more than 100 acres on Monday, forcing evacuations and closing U.S. 60 at milepost 111.

Several RVs were destroyed and no injuries were reported.

Most of the highway reopened by Monday evening as crews continued to mop up and monitor hotspots.

USGS Hawaiian Volcano Observatory issued a Kilauea status update on May 11, keeping the volcano at advisory alert level and yellow aviation color code.

The summit eruption is paused, but summit inflation has resumed with the Weikahuna Tiltmeter recording about 11.4 micro radians of inflationary tilt.

The forecast window for episode 47 lava fountaining opens May 12 and runs through May 15.

Illinois the cherry Valley Public Works Department issued a boil order on May 11 for parts of Cherry Valley after repairs temporarily dropped water pressure below 20 psi.

Residents in the affected service area should boil water for drinking, cooking and ice making until the order is rescinded after follow up testing.

The National Weather Service in New Orleans issued a tornado warning at 8:10pm CDT on May 11 for Central St. James Parish where a thunderstorm capable of producing a tornado was tracked over Lutcher earlier in the day.

A flash flood warning covered parts of St. Charles and St. John the Baptist parishes including Laplace Reserve, Norco and Destrehan after 2 to 4 inches of rain fell on already saturated ground.

Michigan Governor Whitmer signed a state of emergency on May 10 for Oakland county after a 42 inch Great Lakes water Authority transmission main ruptured in Auburn Hills.

Boil water advisories remain in effect for Orion Township, parts of Auburn Hills, Lake Orion and portions of Rochester Hills and Oakland University's main campus, including all apartments.

Residents and businesses across the affected area are directed to restrict water use to essential purposes while Crews replace the 50 year old pipe.

Schools in several districts adjusted operations on May 11 due to the conservation request.

Montana Storm Prediction center has placed parts of eastern Montana under a critical fire weather risk level 2 of 3 today.

Gusty winds, low relative humidity and dry fuels create elevated potential for rapid fire spread.

Local agencies are urging residents to avoid outdoor burning and to report any new ignitions immediately.

Western North Dakota shares the critical fire weather risk highlighted by SPC for today with the same wind, humidity and fuel concerns as eastern Montana.

Emergency managers are watching for new starts along grasslands and rangelands and reminding the public to avoid activities that could throw sparks.

Central Oregon fire managers reported the Pine Mountain Fire on the Deschutes National Forest at 2,589 acres and 85% contained in their May 11 update.

Crews continue to mop up and patrol the perimeter as containment progresses.

Severe thunderstorms across North Texas on May 11 prompted the federal Aviation Administration to issue ground stops at Dallas Fort Worth International and Dallas Love Field with widespread delays and cancellations.

DFW reported nearly 500 delayed flights and lengthy ground delay programs during the worst of the activity.

The same storm system contributed to a national disruption tally of 2,438 flight delays and cancellations on May 11.

Official Update published roughly 24 hours ago.

Survivors are urged to register online at disasterassistance.gov by phone or in person at open disaster recovery centers before the deadline.

All other states and territories have no significant updates in the last 24 hours.

That wraps today's EM Morning Brief.

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