On today’s EM Morning Brief, CISA adds eight actively exploited vulnerabilities to the Known Exploited Vulnerabilities Catalog with a May 11 federal remediation deadline. FEMA major disaster declarations for Montana, Idaho, and Oregon tied to December 2025 storms were published in the Federal Register, opening Public Assistance funding. Super Typhoon Sinlaku recovery continues across Guam and the CNMI under active federal emergency and public-health emergency determinations. Red Flag Warnings span the Plains, Southwest, and High Plains with critical fire weather peaking midweek, and the Hawaiian Volcano Observatory revises its Kilauea Episode 45 forecast window to April 21 through 26. State updates cover Texas flash flooding, Wisconsin tornado recovery, Oklahoma wildfire containment, and the ongoing response to the Minidoka Memorial Hospital cyber incident in Idaho. 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
• CISA KEV update: Eight new actively exploited CVEs added April 20 (PaperCut, JetBrains TeamCity, Kentico, Quest KACE, Zimbra, three Cisco SD-WAN Manager). Federal patch deadline May 11.
• FEMA declarations published: Major Disaster Declarations for Montana (DR-4901), Idaho (DR-4905), and Oregon formally appear in the Federal Register, opening Public Assistance for December 2025 storm damage.
• Sinlaku recovery: Federal emergency declarations and HHS public-health emergency remain in effect for Guam and the CNMI. Power and water restoration on Saipan, Tinian, and Rota may take weeks.
• Kilauea Episode 45: HVO revises the lava-fountaining forecast window to Tuesday, April 21 through Sunday, April 26. Summit remains paused but inflating.
• Fire weather: Red Flag Warnings active across Colorado, Kansas, Nebraska, New Mexico, Oklahoma, South Dakota, and Wyoming. Wednesday expected to be most dangerous day of the week.
• Texas flash flooding: Flash Flood Warning along San Antonio to New Braunfels corridor; SAFD reports nine water rescues. Houston metro sees localized urban flooding with rainfall rates up to three inches per hour.
• Wisconsin storm response: SEOC Update 4 reports 28 resource requests and continued coordination with county and tribal emergency managers following confirmed April 14 tornadoes and flood damage.
• Idaho hospital cyber incident: Minidoka Memorial Hospital restores imaging services April 19. Blackwater ransomware group claims April 17 and threatens data publication after April 24.
• April 17 tornado cleanup: NWS confirms a high-end EF-2 in Lena, Illinois; EF-1 tornadoes in Jo Daviess County, Illinois and Washington County, Iowa; and an EF-2 in Rochester, Minnesota with two injuries.
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Sources
CISA
• CISA Alert — Eight new KEV entries (April 20, 2026) — PaperCut, JetBrains TeamCity, Kentico Xperience, Quest KACE SMA, Zimbra, and three Cisco Catalyst SD-WAN Manager CVEs; federal patch deadline May 11, 2026
• CISA — Known Exploited Vulnerabilities Catalog — Authoritative catalog of actively exploited CVEs
FEMA
• Federal Register — Montana Major Disaster Declaration (DR-4901-DR) — Public Assistance Only for December 9-11, 2025 severe storms and flooding
• Federal Register — Idaho Major Disaster Declaration (DR-4905-DR) — Public Assistance Only for December 16-18, 2025 straight-line winds
• Federal Register — Oregon Major Disaster Declaration — Public Assistance Only for December 15-21, 2025 storms and landslides
• FEMA — DR-4901-MT page — Montana disaster assistance details and deadlines
• FEMA — Emergency Declaration for Guam — April 17, 2026 press release on Super Typhoon Sinlaku support
NIFC and wildland fire
• NIFC — National Fire News — April 20, 2026 daily national fire activity summary
• NICC — Incident Management Situation Report — Daily SITREP from the National Interagency Coordination Center
• InciWeb — Incident Information System — Active wildland-fire and incident records
USGS and volcano
• USGS — Kīlauea Volcano Updates — HVO summit eruption status and Episode 45 forecast window
• HVO Volcano Notice — April 19, 2026 — Revised Episode 45 timing: April 21 to April 26 window
• USGS — Significant Earthquakes 2026 — Catalog of significant events including the April 20 M7.4 near Miyako, Japan
NOAA/NWS
• NOAA Storm Prediction Center — Day 1 Convective Outlook — National severe-weather risk areas
• NOAA SPC — Fire Weather Outlook — Red Flag / critical fire-weather areas
HHS/CDC
• HHS ASPR — Public Health Emergency: CNMI and Guam / Typhoon Sinlaku — April 17, 2026 determination by the Secretary
• CDC HAN — Medetomidine Advisory — Prior HAN on illicit-drug-supply risk (context)
DHS
• DHS — National Terrorism Advisory System — NTAS bulletin page (no new bulletin in the last 24 hours)
FAA
• FAA — Daily Air Traffic Report — Weather-related delays and advisories
• FAA — National Airspace System Status — Real-time airport and NAS status
Alabama
• NWS Birmingham — Regional fire-weather and forecast
Alaska
• Alaska Earthquake Center — Adak M4.7 — April 20, 2026 Aleutian event, no tsunami
Arizona
• NWS SPC — Fire Weather Outlook — Red Flag conditions across the Southwest
Arkansas
• Arkansas Division of Emergency Management — State-level EM updates
California
• Cal Fire — Incidents — Active incident list and evacuation information
Colorado
• BoulderCAST — This Week in Colorado Weather (April 20, 2026) — Red Flag timing and wind outlook
Florida
• Florida State Watch Office — Florida Division of Emergency Management situation reports
• NWS Miami — Hazardous Weather Outlook — South Florida severe and marine hazards
Hawaii
• Hawai‘i County — Emergency Proclamation (April 2026) — Severe weather and concurrent hazards proclamation
• HVO — Kīlauea Notice April 19, 2026 — Episode 45 revised window
Idaho
• DataBreaches.net — Minidoka Memorial Hospital update (April 20, 2026) — Imaging services restored; Blackwater leak deadline April 24
• Comparitech — Blackwater claim and hospital impact — Ransomware claim and hospital response
• Idaho Office of Emergency Management — State-level disaster and mitigation updates
Illinois
• NWS Quad Cities — April 17, 2026 event summary (updated April 20) — Confirmed EF-2 and EF-1 tornadoes across western Illinois
• WQAD — April 17 tornado outbreak recap — Damage assessments and local impact
Indiana
• NWS Indianapolis — Freeze Warning — East-central and southeast Indiana
Iowa
• NWS Quad Cities — April 17 event summary (updated April 20) — Washington County EF-1 details
Kansas
• NWS SPC — Fire Weather Outlook — Red Flag areas across southern Plains
Minnesota
• NWS — April 17 Tornadoes (updated April 20) — Rochester EF-2 and regional damage
Mississippi
• WLOX — April showers? More like April drought — Dry-pattern context and rainfall totals
Montana
• FEMA — DR-4901 designated areas — County eligibility for Public Assistance
Nebraska
• KGFW — Red Flag Warning for central Nebraska — Noon to 9 p.m. Monday critical fire weather
Nevada
• NWS SPC — Fire Weather Outlook — Southwest wind and fire-weather details
New Mexico
• KRTN — Schwachheim Fire Update, April 20, 2026 — Local fire-line assessment
Ohio
• NWS Wilmington — Freeze Warning (April 20, 2026) — Southern Ohio overnight freeze
Oklahoma
• Oklahoma Department of Agriculture — Fire Situation Report (April 20, 2026) — Lightning Roll and Sunny Fire containment
Oregon
• Federal Register — Oregon Major Disaster Declaration — Public Assistance Only for December 2025 storms and landslides
South Dakota
• Men’s Journal — Red Flag Warnings across the High Plains — South Dakota, Nebraska, and Kansas zones through Monday evening
Texas
• NWS San Antonio / Texas Storm Chasers — Flash Flood Warning along the San Antonio to New Braunfels corridor
• Click2Houston — Houston severe threat, April 20, 2026 — Two to three inches per hour and heightened crash risk
Utah
• Snoflo — Utah snowpack status — Statewide snowpack near 32 percent of normal
Washington
• FEMA — Disasters and Other Declarations — Washington December 2025 winter-storm declaration
West Virginia
• WCHS — Freeze Warning remains in effect for most of West Virginia — Monday night through Tuesday morning
Wisconsin
• Wisconsin Emergency Management — SEOC Update 4 (April severe storms and flooding) — Resource requests and ongoing state coordination
• WTMJ — Governor Evers state of emergency — April 15, 2026 declaration
Wyoming
• NWS SPC — Fire Weather Outlook — High Plains critical fire-weather pattern
Guam
• FEMA — Emergency Declaration for Guam — April 17, 2026 press release
• Stars and Stripes — DoD schools to reopen, port operations (April 20, 2026) — Recovery status update from Guam
Commonwealth of the Northern Mariana Islands
• Isla Public — FEMA damage assessment after Sinlaku landfall — Published April 19, 2026
• HHS ASPR — Public Health Emergency: CNMI and Guam — Secretary’s April 17 determination
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