Significant
Activity for September 4-5, 2017
Significant
Events:
Response to Harvey;
Hurricane Irma Preparation
Tropical
Activity:
• Atlantic – Hurricane Irma (CAT 5); Disturbance 1 – High (90%);
Disturbance 2 – Medium (70%)
• Eastern Pacific – No tropical cyclones expected next 5 days
• Central Pacific – No tropical cyclones expected next 48 hours
• Western Pacific – No activity affecting U.S. interests
Significant
Weather:
• Slight Risk of Severe Thunderstorms – Mid-Atlantic to the Northeast
• Red Flag Warnings – OR, ID & WA
• Space weather:
○ Past 24 hours: MODERATE; Geomagnetic storms reaching the G1 level occurred. Solar radiation storms reaching the S2 level occurred. Radio blackouts reaching the R2 level occurred
○ Next 24 hours: MINOR; Solar radiation storms reaching the S1 level are expected.
Radio blackouts reaching the R1 level are expected
Earthquake
Activity:
No significant activity
Declaration
Activity:
Amendment No. 5 to FEMA-4332-DR-TX
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